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renegadeoflove
05-07-2006, 01:23 AM
i got a 90 GT whenever i idle with my car in drive it shakes a lot but when its in neutral or park its fine what could this be and also when it idles the rpms jump from like 600 to 1k help???

alltracman78
05-07-2006, 02:49 AM
The shaking is the transmission making the engine run rough.
Check the fluid in the transmission. Make sure it's full [check while the engine is running and warmed up].
Also, depending on how old the fluid is, you might need a fluid/filter change.

Does the idle jump like that only when it's in drive or all the time?

renegadeoflove
05-07-2006, 02:51 AM
it only jumps when im idling while in drive

alltracman78
05-07-2006, 04:14 AM
Alright, then check the level and all and if it's low, fill it up.
Or, just change the fluid and filter if you don't know the last time it was done.