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Old 06-08-2021, 01:19 PM
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Originally Posted by aany001 View Post
Wondering if anybody has come across this issue. Did an LS swap on my 69 camaro and when I kick the Vintage Air AC on the idle doesn’t bump up and it stalls. Any tips that can remedy this would be greatly appreciated.
Seems like the IAC is either improperly set so it's so far open just to hold a normal idle there's nothing left when you add the load with A/C. Or it isn't working at all. Need to see what the IAC counts are at idle with no A/C and fully warmed up. You want the IAC to be mostly closed down at a warm idle so it can open further and bump the idle speed when the engine gets a load like A/C. Usually and IAC count of 20-40 at a warm idle and no load is in the range. If the IAC is at 160+ it's pretty much all open and can't do anything.

If it's too high you will have to bump the idle screw on the throttle body until you can maintain a hot idle desired speed, and the IAC can close down so it'll actually function when you need it. If it's DBW then ignore everything I just typed lol.


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