How much does your E320CDI vibrate at Idle?
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1984 300sd
How much does your E320CDI vibrate at Idle?
I just changed my engine mounts. Still there is too much vibration in the cab. What level is normal? Sure it's a diesel but my VW TDI seems smoother. What would you guys check for a next step to smooth out vibrations at idle?
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From: Tenerife
MB E 320 CDI 4matic
I do not know.I went to the MB workshop and they put them on with 2 years warranty.I usually go to MB workshop -any time I go somewhere else I regret it and then go to MB to repair it again ;-)
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C320
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From: Cedar Rapids, IA
2009 e550 4Matic
I tossed corteco mounts on my e550, and the thing vibrates like mad at idle. Replaced the trans mount with an OEM one at the same time. Ill deal with it until these fail again and choose another brand.
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1984 300sd
The mounts I got where ANCHOR 9562 and ANCHOR 8832 hydraulic mounts. They are built with the same rubber stiffness as stock. I think that excessive vibration destroyed the last mounts. I did not replace the transmission mount since it looked fine. I expect a straight six,and definitely a german straight six to run very smoothly. Currently my 06 jetta TDI idles smoother.
I am performing an injector test today or tomorrow to see if one of the injectors is failing. Problem is, although a failing injector does explain a rough idle, it ought to have other symptoms like black smoke at startup or under acceleration which it doesn't.
Today I am also swapping in a new EGR valve since the old one failed. There is some chance that the old dirty valve was allowing a small amount of exhaust to leak past at idle creating what amounts to a vacuum leak causing a rough idle.
I see there are some good write ups and videos about doing the injector test. In fact, there seems to be great support doing almost anything to this car. For future reference, are there any repair videos or write ups that this forum still needs or would find useful? If I'm fixing something I might as well snap some pictures.
I am performing an injector test today or tomorrow to see if one of the injectors is failing. Problem is, although a failing injector does explain a rough idle, it ought to have other symptoms like black smoke at startup or under acceleration which it doesn't.
Today I am also swapping in a new EGR valve since the old one failed. There is some chance that the old dirty valve was allowing a small amount of exhaust to leak past at idle creating what amounts to a vacuum leak causing a rough idle.
I see there are some good write ups and videos about doing the injector test. In fact, there seems to be great support doing almost anything to this car. For future reference, are there any repair videos or write ups that this forum still needs or would find useful? If I'm fixing something I might as well snap some pictures.
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Joined: Aug 2015
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1984 300sd
Update: The injector leak test showed all of the injectors where almost identical except for injector 6 where the diesel had only reached about half as high as the others after about 30 seconds of idling. Looks like I have found the problem.
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Joined: Jun 2020
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From: North Georgia Mountains
E320 Bluetec, Unimog FLU419 SEE
I hope that fixes the problem for you. My 2008 E320 diesel with 121K miles is so quiet I have trouble hearing it run at idle and it has the original engine mounts.
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Joined: Jan 2021
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W211 E320 CDI
As above, the transmission mount should also be changed. One thing I've noticed with my car, sometimes it has a sweet idle at other times i can feel a lil vibration. I'm putting this down to the swirl flaps in the intake manifold, which when i replaced my swirl flap motor, i noticed wouldn't always return to the original position, there was either some play or wear somewhere along the line.
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Joined: Nov 2019
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e320
The mounts I got where ANCHOR 9562 and ANCHOR 8832 hydraulic mounts. They are built with the same rubber stiffness as stock. I think that excessive vibration destroyed the last mounts. I did not replace the transmission mount since it looked fine. I expect a straight six,and definitely a german straight six to run very smoothly. Currently my 06 jetta TDI idles smoother.
I am performing an injector test today or tomorrow to see if one of the injectors is failing. Problem is, although a failing injector does explain a rough idle, it ought to have other symptoms like black smoke at startup or under acceleration which it doesn't.
Today I am also swapping in a new EGR valve since the old one failed. There is some chance that the old dirty valve was allowing a small amount of exhaust to leak past at idle creating what amounts to a vacuum leak causing a rough idle.
I see there are some good write ups and videos about doing the injector test. In fact, there seems to be great support doing almost anything to this car. For future reference, are there any repair videos or write ups that this forum still needs or would find useful? If I'm fixing something I might as well snap some pictures.
I am performing an injector test today or tomorrow to see if one of the injectors is failing. Problem is, although a failing injector does explain a rough idle, it ought to have other symptoms like black smoke at startup or under acceleration which it doesn't.
Today I am also swapping in a new EGR valve since the old one failed. There is some chance that the old dirty valve was allowing a small amount of exhaust to leak past at idle creating what amounts to a vacuum leak causing a rough idle.
I see there are some good write ups and videos about doing the injector test. In fact, there seems to be great support doing almost anything to this car. For future reference, are there any repair videos or write ups that this forum still needs or would find useful? If I'm fixing something I might as well snap some pictures.
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C320
Thread Starter
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Joined: Aug 2015
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1984 300sd
I also made the mistake of replacing motor mounts on a e320 (OM642) with Anchor 9562 mounts because RockAuto listed them as vehicle-appropriate (and I went for the $cheap). They are not sufficient. My car shakes like crazy when warming up, and there is no other explanation. When I did more research, I noticed that Anchor and RockAuto also list those mounts for e350 gas burners. They are not diesel mounts. I'm re-doing the job with Lemfoerders.
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1984 300sd
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C320
Genuine lemforder left, "OEM" mount with less than 20k miles right installed by an MB specialist.
I always wondered why my C320 was much smoother than my E320 at idle. The C320 got lemforders when I bought it 3 years ago. The E320 got new mounts installed by the previous owner before I bought it. It came with the receipts. I put in lemforders last week and it finally smoothed out.
Last edited by tjts1; Feb 5, 2021 at 07:12 PM.
Thread Starter
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1984 300sd
Unfortunately yes.
Genuine lemforder left, "OEM" mount with less than 20k miles right installed by an MB specialist.
I always wondered why my C320 was much smoother than my E320 at idle. The C320 got lemforders when I bought it 3 years ago. The E320 got new mounts installed by the previous owner before I bought it. It came with the receipts. I put in lemforders last week and it finally smoothed out.
Genuine lemforder left, "OEM" mount with less than 20k miles right installed by an MB specialist.
I always wondered why my C320 was much smoother than my E320 at idle. The C320 got lemforders when I bought it 3 years ago. The E320 got new mounts installed by the previous owner before I bought it. It came with the receipts. I put in lemforders last week and it finally smoothed out.
Thread Starter
Junior Member
Joined: Aug 2015
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1984 300sd
Update, warm idle is good at times and has a lot of vibration at other times. Any known intermittent warm idle problems? Those mounts helped a bunch, especially at first, but it didn't solve the problem. Open to ideas.
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Junior Member
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1984 300sd
Yes, the transmission mount is now new. I determined that the injector was not a problem. I also tried swapping in a newly rebuilt injector to see if there was any change. There was, the rebuild injector was worse and caused intermittent misses. Nevertheless, it was helpful to know what poor injector symptoms where like and my stock injector did not have them. Also, even with the misfireds from the rebuilt injector, the vibration from that was overwhelmed by the vibration that persisted regardless of which injector I was using.
