i just got my gsr swap back from the shop, got new itr pistons,and skunk2 retainers put it, i put the motor in my car, wich is an 92 eg, and it runs fine of idle, and when i stop, it idles fine, but when u use power the idle starts to bounce up and down for a while, like when the fan goes on, its does that, and the car shakes a little, or when u step on the brakes its does the same, or when using the headlights. this was not a normal occurance when i had it in my car before i got the new pistons in and retainers. help would be appreciated, thanx for reading mylong question.

 

hehe, you newbies really have to start searching, this topic is covered like 10 times a day. It could be your tps, iac, or a vaccum leak

 

bump