E46 Exhaust Rattle At Idle

It is loudest at idle and people keep telling me that I need to put in oil. When he changed it, there was no sound at all when knocking. I have not isolated the sources of the rattling, but it appears to come from near the water pump/belt pulley region. 7 4×4, recently it started to make a rattling noise from the engine, sounds like a rock got caught in the engine fan, sometimes its loud and sometimes its low. If the idle is low and inconsistent, it may be due to an issue with your idle control valve. Replacing the Flex disc involves dropping the exhaust and part of the drive shaft. Above idle (even just a couple hundred rpm) and the increased frequency of power pulses outpaces the speed at which the components couple/de-couple, therefore no rattle whatsoever. Starting making some weird rattling noise when I start it up and let it warm up to appropriate oil temp level before I get in and driveidk if it Rattling noise at startup continuing into idleengine or exhaust?. This is not a big deal when they sit idle, but upon startup they are starved of oil (it all leaked out back into the oil pan!) until the oil pump can send them pressurized oil to take up the slack. A two-way catalytic converter works by oxidizing CO (carbon monoxide) and HC (hydrocarbons "unburned fuel") to CO 2 (carbon dioxide) and water. BMW 328i - 328ci exhaust systems. 030 and I thought it made a difference but I was wrong. S54 Vanos Procedure (E46 M3) The following information is provided for reference purposes only and should be used at your own risk In no event shall Beisan Systems, LLC or its members be liable for incidental,. The big V-twin just makes things worse with its constant shaking. FIXED: Metallic rattle vibe at idle and during accel. Come to find out the rattling was due to a shield on the catalytic converter that was vibrating due to a rusted bolt. It definitely sounds to be coming from inside the engine and you can feel it if you touch the engine. just one random little bolt came lose. It comes around when I'm a little heavy footed and clangs around as I'm hitting little bumps in the road. It will sound like something is wrong. The team at Billy Boat Exhaust has taken our 25 years of experience and racing background to design a product that has a signature tone and a lifetime of driving enjoyment. How log can I expect my exhaust A while back, 18-24 months or so, I had a similar issue that when I was idoling the exhaust would make quite a rattle. Above idle (even just a couple hundred rpm) and the increased frequency of power pulses outpaces the speed at which the components couple/de-couple, therefore no rattle whatsoever. Knocking sound & rough idle on BMW 330ci e46 M54 2001 engine. I just figured out an annoying rattle that would happen at idle and certain lower rpms while driving. According to the Car-X website, a rattling sound in the back of the car can be a sign of loose exhaust system parts. Service Information (SIT) Rattling noise from the hydraulic valve clearance compensation after extreme cornering. As the metal expands, exhaust manifold cracks and flanges expand, allowing more exhaust gases to escape. Dual Exhaust Systems. Exhaust - BMW E36 DIY. For engines with the "V" type configurations, it would be more efficient to use a dual exhaust system than the "Y" pipe. Launched in March 1998, the BMW 3-series E46 was an evolution of the E36 and proved a huge success for the company. Anyone else have this? on a cold start I get a slight "rattle" for a second. 0L, BMW E46 330xi M54 3. If the rattling noise sounds like it is coming from either side of the engine, near the top, you just might have some work to do. Hey all, I'm hoping you can help me out here. A catalytic converter can rattle if its internally damaged or if its heat shield is loose or rubbing against another part/frame. Honda Civic: Why is My Car Shaking at Idle? If your trusty Honda Civic is shaking violently, accelerating poorly, or declining in fuel economy, diagnose and repair the problem as soon as you can. Service Information (SIT) M54 RHD - Exhaust manifold gasket with heat shield E36 E39 E46 M54. Rough running at idle. The noise stops when I am going down the highway but is annoying at stop signs, drive thrus and slower streets. Depends on the problem causing the injectors to be weak. I usually hear it at idle or at higher RPMs on the road. Happens both in gear and in neutral coasting. Correct me if I'm wrong, but basically on a cold start up, as soon as the revs start to drop down to normal idle speed, then you hear the flywheel rattling quite loudly, and it goes away with a blip of the throttle?. MBeckUK wrote: I've got this rattle as well and, according to my testing, they'll never be able to replicate it in the workshop. Need Help? Call Us 626-359-7674 | Orders | My Account. its audible from inside the cabin. One of the rubber grommets that holds one bolt of my K&N filter was shot, allowing the back end of the filter support to rattle against the fender, causing a metal on metal rattle. Why is my exhaust rattling? I have a 2005 Pontiac G6 and there is a rattling noise coming from the exhaust. 6-cylinder engines M52TU, M54 and M56. also guessing its not a exhaust leak for that reason also. Just as the title states, I installed my cat back and sounds amazing! But I had an unwanted rattle. As the engine warms up and the condensation dissipates the white exhaust smoke (steam) is no longer seen. Really annoying but too expensive to fix. The exhaust gas then flows through pipes into the catalytic converter(s), through the muffler(s) and out the tailpipe(s). (Oil Separator Repair Kit) Bmw 330i e46 Engine tick, knock, rattle noises (m54b30) 2003. took the car to the famous mgbuka obosi on friday and the verdict was my camshaft actuator was toast (i didnt't use a scanner cos down there, no one makes use of scanners and mine hasn't arrived yet). Going from a 1. A low rev rattle that seems to be comming from the drive belt area of the car. Doesn't rattle when the car is cold but only starts up after the car is warm. Really bad rattling sound upon deceleration. Maybe certain things just have the same resonate frequency and gets it to rattle. post a model number. If the rattle sounds like knocking, an incorrect fuel grade may be the culprit. Passenger was ok but you could hear the rattle over on the driver's cat when you tapped the passenger side. Maybe an exhaust cover is rattling. The exhaust system requirements of a rotary engine are notably different from those of a four-stroke reciprocating engine. Cons: SES Light is on for down stream O2 Sensor (Will confirm at local auto parts store to prove) Slight rattle at idle from fairly new Down Pipe, light burned out on factory boost gauge, and factory oil temp gauge is not working. The tar-like substance used to seal the vapor barrier to the door frame WILL release itself to a gentle pull, but it is EXTREMELY sticky, and too much pulling will tear your barrier. Has anyone had. It is loudest at idle and people keep telling me that I need to put in oil. It took about an hour with no lift. There is simply no cushioning action at all. Loud rattle at idle General E46 Still not a real clue what was causing the noise i jacked up the car and starting tapping the exhaust to search for a rattle, and. This vanos is manufactured with loose piston bearings. Its precision-tuned straight-through design with in line resonators offers an incomparable combination of power, sound and styling. my golf has had a squeeky/rattling noise for a while now and i've finally pinpointed what i think is the problem. The wait is over… Vorshlag has the fix for your BMW motor woes!. If your issue is more of a rattle, jack it and shake it as mentioned in the above posts. These components react to remove CO and HC's from the exhaust stream. Mine doesn't rattle, but gives a solid 'tink' when hitting a bump too fast/too deep/too hard. It does seem to happen less after warm up and idle is slower. My e46 M3 had a very loud rattle from the exhaust at a certain rev. I have a rattle at idle in what seems to be the inside of the passenger side door sill when the air conditioning is on. until you can isolate the area it's coming from. Emergency Operation of Idle Speed Actuator: If a fault is detected with the idle speed actuator, the ECM will initiate failsafe measures depending on the effect of the fault (increased air flow or decreased air flow). Here I have a O-ring, seal and bearing repair kit for the BMW E46 M3 VANOS used in the S54B32 engine (1999-2006 E46 M3 including M3 CSL and 1999 + Z3 M as well as Z4 M). Check the mount clamps, and see if any are riding/making contact with something else. BMW 3 Series E46 Exhaust Camshaft position Sensor Testing. In general, all exhaust systems components use hangers and clamps to position the pipes away from the chassis and driveline to prevent rattling. post a model number. Took it to a local garage to inspect they advised its the exhaust flange or some sort of a special bracket 2 at the back and 2 in the middle of the exhaust that are corroded away and are causing the rattle. Heat sheild on exhaust is rattling '14 Note, I keep getting this ratter on the exhaust, a heat shield keeps getting hit by road stones and causes rattle. I think has to do with the plastic trim moldings on either side of the shelf where the hardtop bolts go into. I just did an oil change with a flush and it's still there. Driver's was loud and making the exact noise I was hearing when the car was on. I had a metalic rattles at idle, and on second gear when in low revs. Had wife start it today with my face buried on motor. That’s right, we’re shipping production parts for our LS1 swap kit made for the BMW E46 chassis. Car seems soooo much better now. Just as the title states, I installed my cat back and sounds amazing! But I had an unwanted rattle. just under the rear door or so the pipe seems to be moving at idle and when i rev up, the sound goes away. A clanking sound is a bit hard to diagnose without being there in person since it can have different meanings to different people. 2 TLs? > > Two other observations which may or may be unrelated to the problem and do > not seem to directly correspond with the problem: > > 1) I also notice that when my car is idle the engine sometimes briefly. The ticking is not a sign of wear or incorrect tolerances. Dead and dying cats rattle, PCV valves rattle, loose exhaust pipes and heat shields rattle. In 08 had a couple of bikes that had a rattle sound coming from the primary, mainly when the clutch was pulled in, found the clutch plates were never pre-soaked before assembly at the factory, you would think 1,000 or so miles they would soak up fluid, but they did not. My other two cars are DFI and make a lot more racket. We have always had this rattling noise at the back of Jeep when at idle, when you touch the throttle slightly or start to drive, it goes away. What do you think it is? This happens in park neutral and in gear. A catalytic converter can rattle if its internally damaged or if its heat shield is loose or rubbing against another part/frame. Definatly on pass side. A full cat-back exhaust system is a common modification on a BMW, and the reason is obvious. This actually has a deep resonating sound to it. Correct me if I'm wrong, but basically on a cold start up, as soon as the revs start to drop down to normal idle speed, then you hear the flywheel rattling quite loudly, and it goes away with a blip of the throttle?. Recalls and faults: BMW E46 M3 Coupe (2001-06). If you can hear a loud metallic vibration, it usually means that something is touching the exhaust pipe or that a clamp, support bracket or mounting is loose. Can this be corrected?. The one we are dealing with today is shown as #6 in the diagram below and is located directly above the muffler, shown as #3: 2004-2010 Toyota Sienna Exhaust System Diagram. So change the pulley it’s less than a hundred bucks and you’ll save replacing tensioner, idle pulley,belts, expansion tank, thermostat, and some hydrolic or other. The exhaust mounts to a bracket at the rear of the transmission. I recently had a Magnaflow Catback Dual Exhaust installed, and when I'm at idle in gear there's a loud rattling noise coming from underneath the car. For engines with the "V" type configurations, it would be more efficient to use a dual exhaust system than the "Y" pipe. The basic idea here is to test the pressure of your vehicle’s exhaust gasses as they leave the manifold and travel down the exhaust system to the tailpipe. Truck has not been aligned since leveled about 3 months ago. Same as if I pushed the silencer section slightly sideway. My exhaust heatsheld rattles when i put my foot down and its driving me mad, i think its rattling where the two heatshields meet. likewise, if i lay under the car and push on the exhaust with a broom to hold it in place the sound is gone. Offering great bang for the buck, it’s important to realize that a car built to these tight tolerances requires quality maintenance to avoid major headaches. The flex disc is located between the transmission and the drive shaft. If you accelerate hard at 4000 RPM, you can hear this rattle. It's more aggravating than anything. I got a loud rattle at idle. I took it to the dealer and he said that all toyotas sound like that. Anyone else ever experience Rattle while AC is on at idle - LotusTalk - The Lotus Cars Community. With most any lightened flywheel, everyone sees the benefits immediately due to the reduction of the rotation weight. Inside, a steel or ceramic matrix coated with inert rare-earth metals converts harmful emissions so that they are less toxic. In some cases the noise may be a normal characteristic of these engines. If the rattle sounds like knocking, an incorrect fuel grade may be the culprit. An exhaust system manages both pressure and vacuum cycles while an engine runs. Tail pipes have many different bends to fit around the chassis (Metal car frame) and driveline components. Told dealer the Catalytic converter was rattling-believed the inside of the converter had broken free and was rattling. I had a rattle similar I found in the tire wells the plastic clips supporting the plastic inner fender wall were missing and I every little bump there was a little rattle that drove me nuts on that side finally located it in the front tire well so I replaced all the little pop clips with new ones and put in new one were missing problem solved. Later in day, fluctating revs, random stalling at idle, power loss and shuddering whilst driving. No rattles at all with the soft top up. post a model number. I don't feel any vibration the steering wheel. but with the Exhaust removed, he proceeded to remove the headers and then Cut out the cats and Welded in 2 Pipes R400 Later. noisy rattle 6 Answers. To me it sounds like piston play, witch being a mechanic I've heard on many sleds before. For the vanos to rattle a resonance needs to be achieved in the camshaft lash and associate parts movements. T-SB-0041-13 March 15, 2013 Page 6 of 16 Brief Engine Knock/Rattle Noise at Cold Startup (1AR/2AR) Repair Procedure (Continued) F. The sound seems to disappear after 40 mph. I have a 2002 E39 BMW. Car went in again a few weeks for a squeaking noise coming from rear of car whenever I came off or went back on throttle. they "shield" the bottom of your car from heat from the exhaust. as for the rattling sound have you checked the heat shield on the catalytic converter, mine was loose and was causing a rattling sound when it was at idle, and would go away as the rpm's increased. DUAL VANOS O-Ring Seal Repair Kit Includes Vanos Anti Rattle Repa. Thanks In Advance, Zach. Whether exhaust tips alone can change the sound of a car depends largely on the other components used. Offering great bang for the buck, it’s important to realize that a car built to these tight tolerances requires quality maintenance to avoid major headaches. Step by step guide. e46 Seal replacement procedure. I think has to do with the plastic trim moldings on either side of the shelf where the hardtop bolts go into. Megasquirt is weird on the exhaust side and you need to read it as 40 minus X to find the retard amount. Inside, a steel or ceramic matrix coated with inert rare-earth metals converts harmful emissions so that they are less toxic. com and affiliated sites. My lwb 1997 central section exhaust where the silencer is rattles at idle. Ever since I bought my Tahoe it would make this kind of high pitch rattle on and off when it was idling and at low speeds. Here I have a O-ring, seal and bearing repair kit for the BMW E46 M3 VANOS used in the S54B32 engine (1999-2006 E46 M3 including M3 CSL and 1999 + Z3 M as well as Z4 M). As the metal expands, exhaust manifold cracks and flanges expand, allowing more exhaust gases to escape. Place one end to your ear and move the other end around the eng. I have a 2004 Mazda 6i (4-cyl automatic), 73k miles and very well kept. I know that when I am in gear and just letting the idle pull me along, I don't hear anything, but if I break, the rattle will start. Starting making some weird rattling noise when I start it up and let it warm up to appropriate oil temp level before I get in and driveidk if it Rattling noise at startup continuing into idleengine or exhaust?. It's more aggravating than anything. I had a Caddy that made the same noise, and turned out to be a bad serpentine beltthere is no smell, no smoke, no burning oil, no hesitation, starts fine, runs great. They make a sputtering sound as opposed to a lifter with a ticking sound. The cat-converter on my 4. In general, all exhaust systems components use hangers and clamps to position the pipes away from the chassis and driveline to prevent rattling. different car review 233,586 views. Could the increase in engine load be exposing the weakness in my timing chain tensioner? I have a 1998 528i with 106K, BTW. If you hear rattling under the car it could mean that the exhaust system has become misaligned. Read on and we'll go over the most common annoying rattlers. Told dealer the Catalytic converter was rattling-believed the inside of the converter had broken free and was rattling. My Mechanic has no idea, the BMW garage checked the Computer, but there was no conclusive output. I took it to the dealer and he said that all toyotas sound like that. Bolts are loose enough for the flange to move and hit each other and resonate at idle but tight enough and hard to notice when shaking it by hand or by kicking it. com offers the lowest prices online for Rogue Engineering Rear Shock Mounts for your E30/E36/E46 + M3. DUAL VANOS O-Ring Seal Repair Kit Includes Vanos Anti Rattle Repa. When I am going up a small hill in 1st (like up my driveway) and I press the clutch in as I am slowing down - it makes this weird rattle sound. One shop had it up on a lift, did the same thing and did not get any odd noises. 5L, BMW E46 323i M52 2. My original suspect was the A/C clutch, which you cannot purchase separately from the compressor. took the car to the famous mgbuka obosi on friday and the verdict was my camshaft actuator was toast (i didnt't use a scanner cos down there, no one makes use of scanners and mine hasn't arrived yet). coming from the front of the car. It's underneath the car and goes from the engine to the rear bumper. I've kind of always accepted that it is diesel noise, but I've started to think I'm louder than most. I have a 2004 STi with ~95k on the clock and the following mods: Perrin 3" catted 2-piece downpipe Cobb AP stage 2 OTS tune (91 octane) Over the past couple of weeks, since the weather is a bit warmer and I am driving with the windows down, I have been hearing a rattling, metal-on-metal sound that seems to be coming from the front passenger side. Not only does this exhaust have a chip on its shoulder when it’s at idle, but when you open the throttle, it screams like a bat-out-of-hell. There is a flap in one of the twin tail pipes on my 1999 328i. There are actually multiple heat shields under a Toyota Sienna. AS above poster said it could be a simple one like part of the exhaust hitting a heat shield. Passenger was ok but you could hear the rattle over on the driver's cat when you tapped the passenger side. GO TO MY WEBSITE AND BMW FORUM !!! CLICK HERE TO BUY YOUR NEXT CAR PARTS FROM MY AMAZON STORE BMW E46 E39 E90 E60 Rough Idle p0369 p0014 p0015 Camshaft Sensor Problems And Solutions M54 M52TU,. Someone suggesting a rocker arm. The part that is sandwiched between the rear trans mount and the trans was cracked (around the driver's side bolt hole), causing the sound when cold. Sorry for bad quality! Just for fun, no performance gain ;-)MS43Wiki. It's underneath the car and goes from the engine to the rear bumper. exhibit a Vibration and/or Rattle condition when the engine is at idle in gear or when accelerating fromNOTE a slow speed 32 km/h (20 MPH). If anyone notices an annoying rattle noise when accelerating lightly, have your exhaust heat shields checked out. Angie's List interviewed Ben Stallings of Beck Service Center in Indianapolis to discuss noises you may hear from your exhaust system or muffler and what they mean. I've an 03 320D manual which for the past couple of months has been behaving a little wierdly. loving the pit you made wing commander! crafter i now know is a little different, the bracket is part of the Catalytic converter, so a very expensive part to replace, so just spot welded it up again. S4 / RS4 (B5 Platform) Discussion - rattle noise from engine bay at idle - Sounds like valve noise but could also be from pulleys, etc. It is aggravated by driving up steep hills. Emergency Operation of Idle Speed Actuator: If a fault is detected with the idle speed actuator, the ECM will initiate failsafe measures depending on the effect of the fault (increased air flow or decreased air flow). Passenger was ok but you could hear the rattle over on the driver's cat when you tapped the passenger side. Fault Code Diagnostic Trouble Code The following vehicle had an idle surge from 1500 – 1800 RPM. The causes of white exhaust smoke can vary; however, it is common to see white exhaust smoke when first starting a car, especially on cooler days. I have a 57 toyota rav 4 I have for a few months there is a rattling noise coming from the rear underneath. D16 HV Battery System Trouble K19 RDU - Leaks E26 Excessive oil consumption E41 Unusual exhaust system odor D19 HV Inverter System Controller K21 Rear Axle - Leaks F99 Insufficient fluid E42 Unusual exhaust system noise D20 HV Wiring Trouble L85 Undetermined engine leak CUSTOMER CONCERN CODES CHASSIS ELECTRICAL POWERTRAIN Revision Date: JANUARY. Could the increase in engine load be exposing the weakness in my timing chain tensioner? I have a 1998 528i with 106K, BTW. Really bad rattling sound upon deceleration. I changed out my exhaust hangers last weekend. or if I put the car in neutral or park. They are a lean burn engine which means when you add more fuel you get more power or RPM in the absence of load. Rough idle problems are really common on BMW E36 cars and there are a lot of problems that may cause this to appear. Getting rid of that heavy suitcase exhaust that comes stock on these Camaro’s increased exhaust flow and gave us some gains. With rotary engines the exhaust gas temperature is very high - approximately 1,700° -2,000°F at full throttle and high RPM for a 1971-95 peripheral exhaust port engine or about 1600°F for a Renesis (RX-8) side exhaust port engine, as compared to 1,100°-1,400°F for a. It disapears after a second or two as the car really gets going (above 10mph). Created by: I thought it might be an exhaust clamp, but can't track it down. D16 HV Battery System Trouble K19 RDU - Leaks E26 Excessive oil consumption E41 Unusual exhaust system odor D19 HV Inverter System Controller K21 Rear Axle - Leaks F99 Insufficient fluid E42 Unusual exhaust system noise D20 HV Wiring Trouble L85 Undetermined engine leak CUSTOMER CONCERN CODES CHASSIS ELECTRICAL POWERTRAIN Revision Date: JANUARY. 6 zetec rattling noise under the car rattling on the exhaust or on the underside of the cars bodywork. Hello All, My Saturn sl1 1999, with 130k miles has developed a intermittent rattle at idle. However, if there is a downside, it's the possibility of a rattle sound that may be evident at idle/low rpm. The exhaust gas then flows through pipes into the catalytic converter(s), through the muffler(s) and out the tailpipe(s). because of the witchcraft of the vanos most of the rattle comes from the vanos pistons removing the vanos piston bearing axial play significantly reduces the rattle at a low cost and should be considered if there is noise coming from the vanos when you replace vanos seals. I live in Fairbanks, AK and own a 2014 2500 Laramie mega-cab (2,900 miles). AS above poster said it could be a simple one like part of the exhaust hitting a heat shield. 8L, BMW E46 328i M52 2. It almost sounds like the car has ingested a goose! I can't seem to pinpoint the noise. The catalytic converter is made of an aluminum oxide honeycomb coated with platinum and palladium. Engine light then went out. Could be timing as well. It sounds like it is only coming from the left side about mid-body and happens at idle, accelerating and decelerating but is not entirely constant. my golf has had a squeeky/rattling noise for a while now and i've finally pinpointed what i think is the problem. Driver's was loud and making the exact noise I was hearing when the car was on. It doesnt happen at idle, only in motion. as soon as I hit the gas, it runs perfectly smooth. Raphael Orlove. I just did an oil change with a flush and it's still there. Mac, the exhaust systems on these critters are prone to 2 problems, loose flanges on the exhaust manifold header pipe and internal failures of the muffler internals. Could be timing as well. This Genuine BMW Upper Exhaust Support Bracket (Mfg#18301436331) fits BMW E46 323Ci M52 2. To me it sounds like piston play, witch being a mechanic I've heard on many sleds before. Pay attention to low idle or stalling. NO MORE RATTLES!!!!! AND ALITLE MORE RRRROOOAAARRRRRRRR!!!!! Thanks to all who contributed in assisting in finding out my problem My Idle is now back to normal and no more Rough idling at 500RPM. Tech's found the fixing bow had fallen out. The car has 100,000 miles on it. A rattling noise is coming from my 2000 E46 (55 k miles) that seems to originate in either the 1) one of the pulleys, 2) alternator, 3) water pump, or 4) the belt itself. NOTE: The information in Technical SetNice Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and equipment to do. Well over the past 8 years - amazing car - the rattle has intensified greatly. Finding the correct air and fuel mixture will help extend the life of your engine. E46 330i rattle under acceleration. A two-way catalytic converter works by oxidizing CO (carbon monoxide) and HC (hydrocarbons "unburned fuel") to CO 2 (carbon dioxide) and water. Rattling Noise at Idle Problems mine was the head sheild in the middle of the car over the exhaust. I had a look underneath for anything loose and there is a bolt/bar next to the rear spring ther is one on either side but the drivers side one has came loose and is only attatched at one end and rattling around. It seems to only do it when the car is started, and when. If you drive at 3000 RPM steadily, it's barely audible. I recently had a Magnaflow Catback Dual Exhaust installed, and when I'm at idle in gear there's a loud rattling noise coming from underneath the car. The EGR valve, or Exhaust Gas Recirculation valve, is a vacuum controlled valve which allows a specific amount of your exhaust back into the intake manifold. Hot or cold it's always there at short intervals of 2-3 seconds. It disapears after a second or two as the car really gets going (above 10mph). It seems to build up as you sit (for example in traffic lights). exhuast rattle at idle EP3 124000 The exhaust appears to rattle when the engine is warmed up and the car is stationary like when in traffic or at lights. If you accelerate hard at 4000 RPM, you can hear this rattle. Noise can be heard only during left turns or hitting bumps. I know that when I am in gear and just letting the idle pull me along, I don't hear anything, but if I break, the rattle will start. S54 Vanos Rattle Procedure. That leaves only the rough idle/misfire. The dealer thought an exhaust heat shield had bent and they stated they bent it back but the rattle returned the very next day. From time to time, when the car idles for more than a few seconds it will rattle with vibration. Mac, the exhaust systems on these critters are prone to 2 problems, loose flanges on the exhaust manifold header pipe and internal failures of the muffler internals. BMW 328i - 328ci exhaust systems. It definitely sounds to be coming from inside the engine and you can feel it if you touch the engine. It doesnt happen at idle, only in motion. There is a washer where the exhaust attaches to the block, if. A two-way catalytic converter works by oxidizing CO (carbon monoxide) and HC (hydrocarbons "unburned fuel") to CO 2 (carbon dioxide) and water. I have a 57 toyota rav 4 I have for a few months there is a rattling noise coming from the rear underneath. , ~60K miles My wife has this rattle in her escape, has had it about a month now. My e46 M3 had a very loud rattle from the exhaust at a certain rev. I have a rattle at idle in what seems to be the inside of the passenger side door sill when the air conditioning is on. Megasquirt is weird on the exhaust side and you need to read it as 40 minus X to find the retard amount. mar1, just let the pipes cool and get underneath the car and bang on the exhaust piping with your hand in a few locations - it will cause the exhaust system to vibrate and you can pinpoint the locations of the rattle. The car was. when starting the engine) and (b) when going over bumps. I ended up snugly wrapping the heat shields just at the contact joint area with exhaust wrap to shut them up. The only modification performed over the last 17 years on this 500,000-mile BMW was when Clemens had the stock exhaust replaced with a straight-through exhaust system for more sound. Tail pipes have many different bends to fit around the chassis (Metal car frame) and driveline components. Check the mount clamps, and see if any are riding/making contact with something else. My rattle comes from the heat shield over the exhaust right behind the radiator. Now the same technology is available for the E46 M3. different car review 233,586 views. It partially closes at certain RPMs and bike speeds. Does it slap or rattle? Rattle is more to do with timing. A chugging noise could mean a blockage in the exhaust system. Dual Exhaust Systems. It sounds like the axle lifting up and hitting the pipe, but that's expected, especially with a lowered car. E36/E46 BMW Rear Shock Mount (RSM) Replacement BMW Control Arm Bushing Replacement Tips E36 Exhaust Replacement and M3 Exhaust Swap Upgrade E36 Warped Rotors, Ceramic Pads, and the Fix E36 Warped Rotors and Brake Pad Deposits. I pulled into a parking lot and starting shutting stuff down. Idle noise (rattle) I just wanted to join in and mention that I too am hearing this rattle (140,00 miles). even the cups in the cup holders were rattling. The phenomenon is due to irregularities during the ignition and combustion process which occur at low engine speeds. While cruising it usually goes away, however can still be heard at some RPMs. Single VANOS offered smooth idle and increased torque at low and medium rpm. Hot or cold it's always there at short intervals of 2-3 seconds. but the idle speed is 625 in gear in the water unrestrained. The BMW S54 is the equivalent high performance engine, which was used in the E46 M3, the Z3 M Coupé/Roadster and the E85 Z4 M. Other sources of rattle can be quite serious, and you may hear even hear it at idle from the engine bay. I have what I think is a exhaust rattle at idle, and either a squealing or scraping noise at idle. It partially closes at certain RPMs and bike speeds. I had the same thing happen to ne, and the mechanic couldn’t tell me what was wrong. The car was. This is not a big deal when they sit idle, but upon startup they are starved of oil (it all leaked out back into the oil pan!) until the oil pump can send them pressurized oil to take up the slack. applying slight pressure to the exhaust system stops the rattle. You have to inspect the exhaust system to find out if heat shields are causing rattling noise in car when accelerating. My rattle comes from the heat shield over the exhaust right behind the radiator. Engine light then went out. Angie's List interviewed Ben Stallings of Beck Service Center in Indianapolis to discuss noises you may hear from your exhaust system or muffler and what they mean. Car seems soooo much better now. The noise goes away as soon as the RPM increases. re exahust rattle Every Suabru I've owned (4) 1979, 1982, 1991, 2003, has the same rattle. See what others are asking about their BMW 328i. There is always some *steam* that comes from the exhaust when the engine is cold especially noticeable at idle on cold days; more so right after a cold start. rattlr has gone for now! cross fingers. This isn't a persistent noise, it only happens during slow acceleration & hitting bumps while accelerating. In my case, chunks of rubber started flying off. Why the Muffler Rattles. 0si We always had a rattle back there, dealer just looked the other way and said it was considered a normal-condition for the E70 chassis. It seems to only do it when the car is started, and when. Does it slap or rattle? Rattle is more to do with timing. The only modification performed over the last 17 years on this 500,000-mile BMW was when Clemens had the stock exhaust replaced with a straight-through exhaust system for more sound. the vibration is felt throughout the car body and is amplified with use of the A/C. For engines with an adjustable exhaust camshaft check IDE00184 Camshaft adaptation exhaust bank 1 phase position (0° +/-5°), IDE00174 Camshaft adjustment exhaust bank 1 specified value, IDE00175 Camshaft adjustment exhaust bank 1, actual value. FIXED: Metallic rattle vibe at idle and during accel. You will see a bulge in your exhaust (like a mini muffler or 2), these are your catalytic converters. It does not sound the same as his mate’s NRG and when I took the exhaust off something is rattling. Why does my car rattle when I idle? I have a 2005 chevy aveo and when I press on the break/idle in drive or reverse it rattles. GO TO MY WEBSITE AND BMW FORUM !!! CLICK HERE TO BUY YOUR NEXT CAR PARTS FROM MY AMAZON STORE BMW E46 E39 E90 E60 Rough Idle p0369 p0014 p0015 Camshaft Sensor Problems And Solutions M54 M52TU,. This may not be the proper place to post this, please move if necessary; but now I'm freaking out a little bit! Let me explain. My son's Piaggio NRG scooter has lost power.