bad vibration 88
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bad vibration 88
well i have an 88 with a 1990 s5 engine and tranny recently I have noticed a really bad vibration I thought it was a bent rim but after changing the rims It still has the vibration. I also noticed it only vibrates under acceleration and when you throw the car out of gear to stop at a light.any ideas I think it might be an unevenly burnt clutch or a driveshaft weight problem.
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****, could be a number of things.. diff mounts, tranny mounts, ujoints, etc.. in my case it was the driveshaft&diff mounts.. I have a kaaz 1.5way and it likes to lock up under light load, and buck and shake things lose.. maybe check around that area
Your symptoms are very similar to mine.. although my vibrations were probably a bit more violent..
Your symptoms are very similar to mine.. although my vibrations were probably a bit more violent..
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The narrow range on the TPS is out of adjustment. On the S4 the narrow range TPS is in the footwell and on the throttle (IIRC) pedal arm. if satch or hailers comes in i'm sure they could tell you how to go about adjusting it back to the proper voltage reading.
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^ The S4 TPS is on the side of the throttle body in the engine bay. It is located on the opposite side of the throttle linkage.
With engine up to operating temperature (FULLY WARMED) and car OFF. Turn the key to "ON". Go to the engine bay with a multimeter and probe the Green wire with a Red stripe with the positive (+) meter probe. Ground the negative (-) meter probe. Set the multimeter to read "Voltage"... Now there is a flat head screw near the TPS itself. Turn either clockwise or counter-clockwise ever so slightly. You want the multimeter to read 1.00 Volts. If it is .98 V or 1.03 V etc. it's no big deal. As long as it is pretty close.
Be sure you do this as quickly and as efficiently as possible. You pretty much do not want the car to cool down before you perform this task.
With engine up to operating temperature (FULLY WARMED) and car OFF. Turn the key to "ON". Go to the engine bay with a multimeter and probe the Green wire with a Red stripe with the positive (+) meter probe. Ground the negative (-) meter probe. Set the multimeter to read "Voltage"... Now there is a flat head screw near the TPS itself. Turn either clockwise or counter-clockwise ever so slightly. You want the multimeter to read 1.00 Volts. If it is .98 V or 1.03 V etc. it's no big deal. As long as it is pretty close.
Be sure you do this as quickly and as efficiently as possible. You pretty much do not want the car to cool down before you perform this task.
#14
If he got an S5 engine, wouldn't it be better to run a S5 TPs anyways, as the full range is needed to adjust the speed and therefore the amount of oil the OMP spews out?
The S4 got as known only narrow range.
The S4 got as known only narrow range.
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Bent rim I had one I removed it from the car and still has vibration I'm really thinking its the transmission mount because I can hear a clunk from the tranny every once in awhile when I shift gears
Last edited by skkitz; 08-02-12 at 10:15 PM.
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