89 SE thumping when driving
 

i drove my my dads house today,and when i at about 30mph,the car started thumping,like someone was kicking it..this was at about 25mph and the RPM's were jumping from 2k to 1k...and then it did it again when i was about 50-55 mph and the RPM was staying still..it was fine after about 5-10 when i stopped and drove again.

oh god i hope its not the new tranny i had put in!...

engine/tranny mount issues, perhaps? wild guess.

Do you have a service engine soon light?

I would check the distributor. My '89 se had the same problem, and replacing the distribuor got it fixed.

Distributor? We ain't got no stink'n distributors! :)

:oops: well, i meant the Ignition Module... it is essentially an electronic distributor isn't it?

Yes. I would also like to know if/when the plugs, wires, etc. were replaced.

thanks for all your help,turns out at the module,wher all the wires plug into, there was a big crack in it!,,and it would do this on a rainy day,and there was ripped rubber on the wires too!...i replaced them and shes running fine now,RPM's flactuate less now

thanks for your help again

As for the case with my car, replacing the ignition module was what fixed the problem. I have replaced the plugs, but that was a while after I took care of the "thumping" issue...