I have 86fc3s n/a bone stock motor, the car ran fine till yesterday, i left my house and the car acted like i was in 3rd gear when i was in first, I drove a couple of blocks trying to find a gear and it finally smoothed out to normal, drive accelaration, i drifted through an intersection 2nd gear and continued to my friends garage about 2 miles away. i shut the car off which i look back i should have revved to 4k and then shut off as this has been said to help on short running times. i was gonna race my friends 7 series bmw to see if i could keep up for a while and the car began bucking violently in 1st and 2nd but at slow speeds like it did when i first took off, then i got to drive home going 20mph in 3rd gear with the car surging the whole way. please help me get started with quick diagnosis. i was thinking of adjusting or replacing my tps before this to see if i had that set right. new plugs, wires, fuel filter, oil/filter , alternator , starter, WTF!!! Thanx for any info. Robinthehood

start with re-adjusting your TPS.



it wont be your starter, thats for sure https://www.nopistons.com/forums/pub...IR#>/smile.png.



I do however think if the TPS doesnt do it go ahead and do a full tune-up (plugs, wires, fuel filter, oil change) just to make sure its runnin best before checking into deeper things.



kevin.

Yea i think Kevin hit the nail on the head.

thanx kevin, i realize the tps might be involved, i was stating in question the plugs/wires etc. have already been changed, change again? how do i check fuel pump if i have to?

oh you already did the plugs and such? did you have the problem before you did them?



double check you have to right wires going to the right plugs, common mistake.



kevin.