Idling problem

WonIt

Air ,Fuel ,Spark!
Feb 26, 2006
175
0
16
Front Royal,VA
When my car sits in nuetral,or park it idle's up and down .. the timing is dead on,ive checked all the hoses and whatnot for leaks thinking it could be a vacum leak sumwhere...When Mike(from masupras.com) looked my car over we came to the conclusion that there had to be a wire frayed between the TPS,and the ECU. today befor i left work i ran wires from the TPS to the ECU and it did the same exact thing....any of u have possible solutions to this??
 

chunk

New Member
Aug 11, 2006
7
0
0
oklahoma
I have read on here that when u rev the engine up after it comes down it should click or something...im having similar problems myself...but it isnt varying it just stays around 1500 to 2000 rpm...


but ive read a possible cause is the air intake valve....
 

WonIt

Air ,Fuel ,Spark!
Feb 26, 2006
175
0
16
Front Royal,VA
TY everyne i will be looking into all these possibilitys today,,i know that the TPS is good,ive swapped it with one off of a running car and still the same problem,and also when i pull the plug off of it the rpm's jump up.

any of you know where i can get a diagram with all the vacum lines on it?

the only codes its throwing is for the speed sensor
 

WonIt

Air ,Fuel ,Spark!
Feb 26, 2006
175
0
16
Front Royal,VA
Twas the ISC, it was stuck i got it loose cleaned it,then oiled it up a little...seems to be idling fine now!! : ) ty ppl