High Idle and Service Engine Light

[Yamaharyder600]

Ok so picked up a 96 Awd Auto Eagle Talon yesterday. This is my first DSM. .
Anyhow, Service engine light is on just about all the time. The idle is a little high after it warms up, it sits at about 1500 RPM. So we hooked up the obd and pulled the codes. We got p0443 and p0505. P0443 is a VMV Circuit Fault. This one I am unsure of how to fix. The second code P0505 is a IAC Valve system fault. I pulled the IAC and put in another a buddy of mine had in the garage and not much difference in the idle. Could anyone point me in the right direction. I did a few searches here on the forum but most were having a low idle and stalling, Im totally opposite.

 

[mattsuperman]

Well I have had the same issue with the high idle and the p0505 CEL code. It was my IAC I picked one up from auto zone and it solved the issue. You can try and make sure it is pluged in properly. You can test it like this DmTaLoN's Idle Speed Control Test/Fix Page!
I threw one the other day and i just tightened down the IAC plug and havent had it since.
As well is you can adjust your biss screw on the throttle body yourself to adjust the idle higher/lower.

 

[Rockyp]

IAC, intake leak, vacuum hose, power steering stuck on (don't laugh, I've seen it).

 

[big_d]

I would be pulling the ecu first.

 

[2gGst98]

have you done a boost leak test. my idle went up when i had a leek.

 

[miguelmcv]

Do a Boost leak first...
The ICS controls the air for the idle,,, But if there is a leak, then, the ICS gets a bad signal which can make it hard to do his gob.

BOOST LEAK TEST