iac

[ninety1gt]

if the idle air control went out, would the computer send out a code?

 

[86mustang5.oh]

yes

 

[jrichker]

The computer only knows if the IAC is controling the idle in a satisfactory manner. If the idle speed is too low, then you get a code 12. Too fast and you get code 13. The IAC can be completely disconnected, and as long as the idle speed is in range, it will not set either code 12 or 13.

 

[HISSIN50]

JRichker is right on.