C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Now I have a IAC problem.

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Old Sep 5, 2002 | 02:09 PM
  #1  
UB2 SLOW's Avatar
UB2 SLOW
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From: I could tell but then I would have to kill you
Default Now I have a IAC problem.

Okay, I got most of the bugs worked out, but now I have a Code P0506 "Idle Air Control System RPM Lower Than Expected" Could this be my TPS? :confused:
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Old Sep 5, 2002 | 02:29 PM
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vettmech
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From: Charleston, WV
Default Re: Now I have a IAC problem. (UB2 SLOW)

I may be wrong but I don't think that will be your tps............make sure you have no vacuum leaks, make sure the throttle plates are closed properly, make sure the PCV system is ok........no leaks , valve OK ect..........does it idle at the proper speed? :seeya
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Old Sep 5, 2002 | 03:11 PM
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UB2 SLOW
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Default Re: Now I have a IAC problem. (vettmech)

I think I found the problem. When I put the Throttle Body on, I dont think I set it right. I am going to adjust the screw and see if that helps.
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Old Sep 7, 2002 | 12:13 AM
  #4  
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From: Fremont Oh
Default Re: Now I have a IAC problem. (UB2 SLOW)

It's your throttle body plate position, you got it... readjust the idle screw on the throttle body... remember that autotap program i told you about :D You can set it and adjust the throttle for roughly 20 -50 IAC position. It (IAC) is probably bottomed out and cant adjust to give you the proper idle that the ecm is commanding.

mo
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Old Sep 7, 2002 | 01:25 AM
  #5  
UB2 SLOW's Avatar
UB2 SLOW
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Default Re: Now I have a IAC problem. (Mo_Bandy)

It's your throttle body plate position, you got it... readjust the idle screw on the throttle body... remember that autotap program i told you about :D You can set it and adjust the throttle for roughly 20 -50 IAC position. It (IAC) is probably bottomed out and cant adjust to give you the proper idle that the ecm is commanding.

mo
It took me awhile for this. I just wasnt thinking I finally got it set at 30 right before I went to the track. Luckly I had a friend who had a good scanner, not the POS I have.
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