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High idle only in middle of driving and after

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GSTdude06

15+ Year Contributor
481
11
Oct 29, 2005
Mesquite, Texas
I believe I just fixed all my leaks finally, ive had this problem for a little bit of time but thought it was just leaks. Well I believe they are all done but it is still here. When I first turn the car on my idle is fine stays at 750 give or take some.... but after I drive around...car gets warmed up and stuff the idle stays at around 1500, the BISS is set correctly and I also have a 1g TB.

Could the 1g TB be the problem?
More leaks!?
Car not being cooled enough?


I just cant figure it out....
 
Check to see if your ISC is working, and also check with your logger that the ThrottlePos is at 0 when the throttle is closed.
 
From my thread I just started, its possible it could be the fast idle air valve ( FIAV ) acting up. I just made a plate to block mine off, but also allow me to keep my ISC so Ill Idle smooth, but just have to give slight assistance to the cold starts.
 
My car use to do that from time to time, it ended up being the stupid cruse control sticking and holding the throttle at ~5%. Hose the throttle cables and that pully block down with some good lube and work the cables a bit.
 
Where can I lube it at? After warming up my SAFC says my throttle is at 2.3% so im guessing its sticking.
 
Try and loosen your throttle cable with the two bolts on the cable bracket. Mine was at 2000rpms untill I loosened it. Once the car warms up and stuff starts expanding, the throttle cable will start getting pulled if its too tight.
 
burntheblobs said:
Try and loosen your throttle cable with the two bolts on the cable bracket. Mine was at 2000rpms untill I loosened it. Once the car warms up and stuff starts expanding, the throttle cable will start getting pulled if its too tight.
I second this
 
Is there like a how to? Cause wen I tried it wouldnt move......
 
On your intake manifold there are two screws that hold gas wire before TB. Lose them little beat, give it little extra wire before TB, and tight them back. Easy fix, hopefully that will help...
 
I did it, at least i think I did the right screws.....when I loosined them it moved towards the TB itself..... so I just tiightn them and ill see if it worked when I leave in 10 min. Thanks
 
GSTdude06 said:
I did it, at least i think I did the right screws.....when I loosined them it moved towards the TB itself..... so I just tiightn them and ill see if it worked when I leave in 10 min. Thanks
I would loosen them when the engine is warmed up... otherwise you could give yourself more slack than necessary, resulting in the throttle not opening all the way when you "floor it". You'll see what you have to do when you get out there... it's very straightforward.

If this doesn't work, check your ISC to see if one of the coils is blown.
 
The car was warmed up, I just got home from a haircut and bank and I came in looked on here then went to do it.... But ill check my SAFC to see if im gettin a 100% opening.
 
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