After installing c&l plenum and bbk throttle body my rpms hang at 1500 and then drop to idle speed, I have heard a few people talking about this problem and there hasnt been a way to fix it(that I know of at least)... when I unplug the IAC and manually set the idle it runs fine. My question is is there any downsides to doing this (performance.engine damage. gas milelage etc.)?
IAC is it necessary
- Thread starter Bulldog6Z6
- Start date
mhanna77
Member
The IAC is only active durring idle and off-idle so there isn't any problems to worry about, maybe a little more pollution... I have switched back and forth 3 times and currently just run with it unpluged. THE only downside I can see is when the A/C kicks in (which it does with the heat in the defrost position also) that tries to stall the car because the IAC isn't there to compensate.
But I am happy with it unpluged, I like the RPM's to drop quickly that's why mine is unplugged
But I am happy with it unpluged, I like the RPM's to drop quickly that's why mine is unplugged
BlackVert
15 Year Member
mine did that and it turned out the iac was sticking open. i got a new one for $50 at autozone and it took 5 minutes to install it. problem fixed.Bulldog6Z6 said:
yours may not be sticking, because i'm sure you have fewer miles on your car than mine, but it's probably a vacuum leak in the tb or iac. with the engine running, spray carb cleaner at the different gasgets. if the idle changes when you hit a certain gasget, there is your leak. good luck.
BlackVert
15 Year Member
after my iac was stuck open for a while, it started getting stuck closed. then when it was cold, it did stall sometime. costs $50 for a new one at autozone. just replace it -- 5 minutes.Bulldog6Z6 said:
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