Alright.. i know theres alot of threads like this but i dont see very much with my kinda problem so i want you ask you guys. I have an LS in my EJ and ever since I used an intake cleaner to clean the manifold its been idling like crazy, bouncing rpms. revs high then llow then high, etc. This only happens when im in neutral or when i stop. what could be the problem

 

there is bolt that you could play with your intake manifold. try to close little bit. it might help. my old eg had a problem like that and it really help me. it wasn't perfect but it was good enough. however, you might lose top end little.

 

just got done with my rebuild and had the same problem, don't touch the idle screw in the IM, it's vacuum, even the very slightest hole in your vacuum lines can cause this, you can just tape it with electrical tape to fix it though.. either a hole or you knocked a line loose when you were cleaning the IM.. check all the vacuum lines.

EDIT: vacuum is the number one cause, next to that it's EGR, bad fuel injection, and busted pulleys/belts


Modified by G1_TEGGY at 10:18 AM 2/29/2004