First post... Mostly because in need of serious advice on my iroc. I've had the car for a year and a half and have been trying to figure it out since. It bucks going down the road very badly, very often. It idles fine when first started, but after being driven it idles very rough, surges, and will stall usually also. if it does idle fine it's usually a high idle... I have cleaned the cap contacts and same for rotor, new plugs, wires are okay, tps checked at .54, no vac leaks, cat delete. runs strong at wot, but simply cannot cruise in it. I get codes 24, 36, 42... 5 spd 305 tpi... very very close to putting it out by the road

 

Try resetting the IAC as well, only takes a second.. https://www.thirdgen.org/forums/tpi/...ml#post6036396

Look up the codes to tell you where to look... Google is your friend there..

Maybe your in just to low of a gear and rpms are to low... My first attempt at driving a standard caused a bad bucking too

 

Thanks for the reply. But it's not me lugging the motor. It'll do it cruising at 2500 rpm etc. It's always done that. I've searched everywhere on these forums and on google and it doesn't it help me. I've looked up the codes and the only one that could be causingg this is 36... and I've tried a whole new burn off relay and what not. Haven't tried the iac, I'll do that.