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Smallblock454 · 10-29-2020, 09:11 AM

Hi,

my 2003 986 was at a workshop. Since than i have problems with vibrations in the drivers footwell. The vibrations appear to come from the footwell floor / side panel and appear also in the gas pedal (which in my car is electronic – so no throttle cable).

The vibrations are engine related. They disaapear immediately if i press the clutch and the rpms drop.

The car was in the workshop to do:
DMF, clutch, pressure plate, release bearing, clutch servo spring
Water pump, thermostate
IMSB
Front engine mount
and some other things

I also asked them top check the 2 other hydro engine mounts. They didn't do that. They've said that they never fail, hm...

They said there are no vibrations or that they cannot feel any unusual vibrations. All of these cars would vibrate, blah blah...

In the end they replaced again:
DMF, clutch, pressure plate, release bearing
Water pump, thermostate
and put in an old engine front mount in

The IMSB (open roller bearing) wasn't replaced.

The vibrations in the footwell are still there. Additionally i now have vibrations in the drivers seat and centre console.

The vibrations start at aound 2.000 rpm and disappear above around 4.500 rpms. The vibrations appear under light to heavy load. No appearance with no engine load. They are definitely not undercarriage related.

I suspect there is a problem with the engine mounts or that the drive train is tensed in some way. Or that there was something going wrong, when they installed the IMSB.

Has anybody experienced similar vibrations from the engine in the drivers footwell?

Thanks and regards

10-29-2020, 09:11 AM	#1
Smallblock454 Registered User Join Date: Jun 2014 Location: LB, Germany Posts: 1,512	Problem with vibrations since car was in workshop Hi, my 2003 986 was at a workshop. Since than i have problems with vibrations in the drivers footwell. The vibrations appear to come from the footwell floor / side panel and appear also in the gas pedal (which in my car is electronic – so no throttle cable). The vibrations are engine related. They disaapear immediately if i press the clutch and the rpms drop. The car was in the workshop to do: DMF, clutch, pressure plate, release bearing, clutch servo spring Water pump, thermostate IMSB Front engine mount and some other things I also asked them top check the 2 other hydro engine mounts. They didn't do that. They've said that they never fail, hm... They said there are no vibrations or that they cannot feel any unusual vibrations. All of these cars would vibrate, blah blah... In the end they replaced again: DMF, clutch, pressure plate, release bearing Water pump, thermostate and put in an old engine front mount in The IMSB (open roller bearing) wasn't replaced. The vibrations in the footwell are still there. Additionally i now have vibrations in the drivers seat and centre console. The vibrations start at aound 2.000 rpm and disappear above around 4.500 rpms. The vibrations appear under light to heavy load. No appearance with no engine load. They are definitely not undercarriage related. I suspect there is a problem with the engine mounts or that the drive train is tensed in some way. Or that there was something going wrong, when they installed the IMSB. Has anybody experienced similar vibrations from the engine in the drivers footwell? Thanks and regards __________________ My Porsche keyfob, instrument cluster and alarm ecu repair service: https://sportwagendoktor.de Last edited by Smallblock454; 10-29-2020 at 01:56 PM.