IAC driving me nuts
Thread Starter
Melting Slicks
Joined: Dec 2000
Posts: 2,719
Likes: 59
From: Fremont Oh
IAC driving me nuts
I'll post this in the scan and tuneas well... perhaps someone can give me some assistance...
Since I added the intercooler to my car, I have been getting MIL lights coming on DTC 506 Idle system low IAC responding... DTC 507 Idle High IAC responding...
I'm hoping someone who is superchargered with LT1 edit can share if they have had the same experience... I'm due for emission here soon and it's going to be a pain let alone the risk of the light popping on...
The idle seems stable... the other issue I have is that the IAC is going to 0 at idle where most things I have read say that it should be at 25... if I adjust up the idle (throttle body per the instructions) the idle just increases and I don't see a difference in the IAC. As soon as I move the IAC seems to track fine it seems only at rest or idle I guess...I have also cleaned and replaced the IAC... I'm running a BBK 52 mmm throttle body, and the best I can tell I have no vacuum leaks...
Appreciate any programming suggestions i.e. the idle and iac settings in the ecm.. Anything LOL
Thanks!
mo
Since I added the intercooler to my car, I have been getting MIL lights coming on DTC 506 Idle system low IAC responding... DTC 507 Idle High IAC responding...
I'm hoping someone who is superchargered with LT1 edit can share if they have had the same experience... I'm due for emission here soon and it's going to be a pain let alone the risk of the light popping on...
The idle seems stable... the other issue I have is that the IAC is going to 0 at idle where most things I have read say that it should be at 25... if I adjust up the idle (throttle body per the instructions) the idle just increases and I don't see a difference in the IAC. As soon as I move the IAC seems to track fine it seems only at rest or idle I guess...I have also cleaned and replaced the IAC... I'm running a BBK 52 mmm throttle body, and the best I can tell I have no vacuum leaks...
Appreciate any programming suggestions i.e. the idle and iac settings in the ecm.. Anything LOL
Thanks!
mo
