I have an 86' and I have the TB mod done to it which makes it idle around 1k. I dont fine nothing wrong with that very steady at 1k. My problem is when i am in 4th doing say 50 and throw her into 2nd say becoause of a stop light sometime my idel will dip down to the 300's and around that area and i have to tap the gas pedel liek twice to keep her from dying out. I donno if this is cus of the TB mod or not but I would like to have it fixed cus it sometimes is annoying. Note This ONLY happens when i get up on the throttle and have been going really fast then stop fast from like 50 and stopping to liek 15 for a stop it then it will do it. But for everyday driving its fine.

 

Almost sounds like a fuel system problem. Perhaps in the tank. Just a guess. CJ

 

hmm any other ideas

bump

 

bump

 

might have something to do wtih the TPS...has it ever been adjusted?

also, check to see if your throttle cable is in the correct position...maybe this has something to do with it

good luck man