On 23 Dec 2004 10:29:05 -0800,
deanbrnz@yahoo.ca (bigbossfan80) wrote:
||It's been about 8 months now since anything has gone wrong with my 89
||Cutlass Supreme. I was starting to like not having to repair or
||replace, and instead just maintain!

||
||But lastnight I drove to Mississauga, Ontario to pick-up my brother.
||It's an hour and a half drive on the highway. Going there, everything
||was smooth as always. But, on the way back, about 20 minutes from
||home, I noticed quite a violent shaking and vibration through the gas
||pedal, floor board, and especially steering wheel/column. For some
||reason I thought right away that it was a transmission thing, but then
||I realized it was doing it in every gear, and ONLY when I was at a
||certain throttle point.
||
||For example, if I was 0-20% on the throttle, it was fine, 20-50%, it
||was shaking violently and wouldn't accelerate, and 50%+, it was
||fine!??
||
||It was also making loud, almost grinding noises. And the steering
||wheel shaking could be heard as well as fealt. Same with the gas
||pedal itself, I could feel it pulsating really violently in my foot.
||
||Needless to say I was very worried. Once I got onto city streets, I
||noticed it would even do it in 1st gear while starting to accelerate
||initially, then once I got past the throttle point in which it woud
||shake and rattle, it would stop until I was in the next gear and back
||at that same throttle point.
||
||It kind of felt to me like something was all-of-a-sudden very loose,
||like something in the steering rack, column, or drive-line. My
||brother is under the impression that it didn't start doing this until
||I had accidently drove over too far on the left hand side and ran over
||all those closely placed BUMPY things to make you slow down. But I am
||not sure this is the case...
||
||Anyways, what makes this SO strange, is that once I got off the
||highway and to my parents house, I shut the car off, parked it, and
||went inside for about 20 minutes. Then, when I went to leave to go
||home, I noticed that the shaking and vibrating was completely GONE!!!!
|| What the hell!!?? Simply shutting the car off and parking it for 20
||minutes has somehow cured the problem!!?? I drove all lastnight and
||so-far today and it has not done the same thing once! Not even a
||little bit!
||
||So this has me totally flabergasted. Because I could see if it were
||an engine problem, then maybe reseting the engine by turning it off
||could possibly fix it, but this in no way felt like an engine problem
||at all! It felt completely like something was phyically damaged or
||disturbed. Maybe I'm wrong? I mean, I know when an engine has a
||mis-fire like a bad coil that the engine will shake violently under
||load, so maybe this is the case, but it definately didn't feel like it
||to me...
Maybe you threw some slush up into somewhere it should be, and it froze?
That could cause an imbalance or other unpleasantries.
Texas Parts Guy