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high idle

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gstowner

15+ Year Contributor
246
1
Nov 13, 2004
Creston, Iowa
HI,
Whenever my car gets hot it idles high. like 1500 sometimes even 2gs. I dont even have to give it gas when I let out on the clutch. When im driving down the street I dont have to give it gas either it will pull itself. (really slow like 10 mph) could it be like the tps?

thanks guys :dsm:
 
1. Make a boost leak tester and and place the tester on the turbo inlet. Make sure you hold 20 psi for a good amount of time. Spray any couplings, gaskets, and seals between the turbo and intake manifold gasket with soapy water to see any leaks that you might have. Fix whatever leaks you have and do it again until it holds 20 psi. Anymore questions about finding a leak PM me.

2. Since you have a 2g the TPS adjustment on vfaq doesn't seem to work because it is for a 1g. Do this procedure to see if it is your TPS sensor. TPS Adjustment

3. Test the coils on your ISC motor as to see if it is bad. ISC motor test

If these do not solve your idle problem then go to this website about idle surge. Idle Surge
 
Awesome thanks man. I think it is the boost leak cuz im pretty sure I have one anyway. I already made a coupling device just haven't done the test yet.

thanks :dsm:
 
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