IAC Wires Question

[Scoobum]

Got called out of town last nite for a GN that wouldn't idle. What I found was the owner installed a new turbo with a 4" inlet...and he managed to crush the IAC wires with the 4" MAF pipe. I got the wires straightened out and it now idles fine. The IAC is now pegged at 100 and the AF is 11. Do the IAC wires have different voltage values...or do I just check for continuity? With the IAC pegged at 100...is it pushing the AF to 11?

[PacecarTA]

you should use an iac driver tester to test

if the iac is at 100 try opening the throttle body blade by turning the screw in
it should drop


and by  AF 11
 do you mean the maf airflow (AF) on scanmaster or AF as in air fuel ratio
if you mean AF as in airflow ..., high idle or bad translator settings will affect the AF reading

what was the RPM
what MAF sensor  and was the translator settings changed for it

you should do a continuity of the wires  from the iac connector to the ecm connector (unplug ecm)

[Scoobum]

you should use an iac driver tester to test

if the iac is at 100 try opening the throttle body blade by turning the screw in
it should drop


and by  AF 11
 do you mean the maf airflow (AF) on scanmaster or AF as in air fuel ratio
if you mean AF as in airflow ..., high idle or bad translator settings will affect the AF reading

what was the RPM
what MAF sensor  and was the translator settings changed for it

you should do a continuity of the wires  from the iac connector to the ecm connector (unplug ecm)

RPM was about 850. Stock MAF. AF of 11 was the reading on the SM at 850 RPM. Turning the screw did nothing to change the IAC reading.

[PacecarTA]

af 11 does not match up with an 850 rpm

check the maf or maf translator settings

[Scoobum]

The AF on the car was normal before the wires got crunched. I'll have to get back out to his place and check for continuity. Thanks for the help.