I. A. C. Valve
10-30-2007, 09:44 PM
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I. A. C. Valve I am very new to this forum.
Experiencing some idle problems and surging problems. Some one said I needed to adjust the I.A.C. Valve.
What, Where and how do you adjust the "I.A.C. Valve"??
Experiencing some idle problems and surging problems. Some one said I needed to adjust the I.A.C. Valve.
What, Where and how do you adjust the "I.A.C. Valve"??
10-31-2007, 06:59 AM
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Moving to General Maintenance & Repairs...
10-31-2007, 10:05 AM
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Stands for Idle Air Control valve. It is controlled by the computer and allows in just enough air to maintain the idle speed when the throttle is closed. On my car (LT1) it is located in the bottom of the throttle body, I'm pretty sure an LS1 is the same. It's not really a part you would adjust, it should adjust itself, but it might need to be cleaned. Try searching these forums or on the interent for some info on cleaning it, I know you're not supposed to use certain chemicals on it but I don't remember all the details.
11-08-2007, 06:28 PM
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I.A. C. Valve Just finished installing Cam & Heads. What a difference. Still have some fine tuning to do. Car is not happy at slow speed, in traffic, stop light, or when I shift fm park into either "D" or "R". Trying to figure out what to do to fix problem and it was suggested I may have to drill a small hole in the Throttle Body "Blade" or do a better job adjusting the I.A.C. valve. Made it sound as if it was something one could do manualy. Must understand I am a dinasoar, when it comes to everything being controlled & adjusted via the computer, but I am learning. I am an old fart, reliving my childhood. Appreciate this site. The guy doing the tune knows his stuff big time, but we live in NW Montana and it is a 200 mile round trip. Have been trying to help figure out this problem.
Last edited by equalizer; 11-08-2007 at 06:49 PM. Reason: Repeated twice
11-08-2007, 09:48 PM
#7
Just finished installing Cam & Heads. What a difference. Still have some fine tuning to do. Car is not happy at slow speed, in traffic, stop light, or when I shift fm park into either "D" or "R". Trying to figure out what to do to fix problem and it was suggested I may have to drill a small hole in the Throttle Body "Blade" or do a better job adjusting the I.A.C. valve. Made it sound as if it was something one could do manualy. Must understand I am a dinasoar, when it comes to everything being controlled & adjusted via the computer, but I am learning. I am an old fart, reliving my childhood. Appreciate this site. The guy doing the tune knows his stuff big time, but we live in NW Montana and it is a 200 mile round trip. Have been trying to help figure out this problem.
