S4 Vibration
10-28-2014, 11:17 PM
#1
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S4 Vibration
I have an 1989 S4. Is it normal for this car to vibrate when on? Lets say you turn the car on and hop inside and you can feel it vibrate. I did an intake and valve cover refresh.
10-29-2014, 12:42 AM
#2
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Is a vibration normal ? I would say yes, as long as there are possible misfiring issues, or collapsed engine or tranny mounts, or bad TT bearings. A vibration is most likely a symptom of something in need of repair. Normal in most 928's suffering of deferred maintenance.
10-29-2014, 01:17 AM
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You need motor mounts.
10-29-2014, 01:40 AM
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Isn't a small amount of vibration on cold start normal? I've also convinced myself that a slight ticking/knocking sound after sitting for a few days is normal, too...?
10-29-2014, 02:29 AM
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A slight engine vibration is probably to be expected, but if the vibrations are sever enough to warrant concern then I would suspect there may be underlying issues. Is it harmonic, does it change at different RPMs?
Could be motor mounts, could be a single issue, or a combination of more than one thing. There are several threads relating to vibration issues here. You need to just try to discount the known issues first.
Could be motor mounts, could be a single issue, or a combination of more than one thing. There are several threads relating to vibration issues here. You need to just try to discount the known issues first.