[Vedder]

Ok i have bitten the bullet and bought 2 OEM engine mounts and changed them, like before with the cheap ones that i installed the car before, it rattles alot more at idle, i mean serious vibration, coming from the engine, although its all related to the driver's side one, cus when i went back and put the old one it stopped rattling and its very smooth, so my problem is that a new engine mount is making the car vibrate.

I triple checked the balance Belt its dead on, with no vibration at all.

Anyone heard of this before?

regards

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[94SilverCab]

I believe that there are different motor mounts for Manual and tiptronics...is it possible that incorrect ones were installed?



Regards,



Jay

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[Vedder]

Thanx for the quick reply, i checked and i have the right ones, my car is a manual.

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[flash]

vibrations can come from a lot of places - while it is natural to immediately suspect the balance shafts or belt, if service was not recently done, and the marks line up, that is most probably not the issue, as there was no change



when did the vibration start?

was there anything done that precipitated this?

is it across the rev range?

at idle only?

one particular rpm?

is it in gear and out, or just one? if in gear, all gears?

does it happen with the clutch pedal both up and down?

when was the clutch last done?

how is the clutch engagement?

do you feel any shifting or hear any clunking when engaging driveline and taking off?

does the engine itself run smoothly all the way to redline?

have you tried looking at the engine with the hood open, engine running and in a dark garage? did you see any sparks?

are there any buzzing or rattling noises anywhere?

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[Vedder]

[quote name='flash' post='32832' date='Mar 20 2007, 02:17 PM']vibrations can come from a lot of places - while it is natural to immediately suspect the balance shafts or belt, if service was not recently done, and the marks line up, that is most probably not the issue, as there was no change



when did the vibration start? [color="#FF0000"]after replacing the drivers side mount, if i put the old one back on the rattle disapears[/color]

was there anything done that precipitated this? [color="#FF0000"]not to my knowlege[/color]

is it across the rev range? [color="#FF0000"] only at idle [/color]

at idle only? [color="#FF0000"] yes [/color]

one particular rpm?

is it in gear and out, or just one? if in gear, all gears? [color="#FF0000"] its not gear dependent [/color]

does it happen with the clutch pedal both up and down? [color="#FF0000"] its not clutch dependent [/color]

when was the clutch last done? [color="#FF0000"] not known [/color]

how is the clutch engagement? [color="#FF0000"] smooth although the bite is a bit high [/color]

do you feel any shifting or hear any clunking when engaging driveline and taking off? [color="#FF0000"] no [/color]

does the engine itself run smoothly all the way to redline? [color="#FF0000"] yes revs smooth [/color]

have you tried looking at the engine with the hood open, engine running and in a dark garage? did you see any sparks? [color="#FF0000"] no sparks leads are 3 months old [/color]

are there any buzzing or rattling noises anywhere? [color="#FF0000"] theres is a slight rattle coming from the bell housing, butits has been there for 3 years now. [/color][/quote]

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[flash]

the only other things i can think of are either:



the strut tower brace is making contact due to the new mounts making the engine sit higher



or



that the tranny mount is shot, and the new mount puts something into a place where it makes contact somewhere at idle



or



could be that it's a bad mount right out of the box - it happens - there is a measurement for minimum spec, but i can't remember it right now

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