IAC is it working ??????

[onebadv6]

how can I tell if the IAC is bad will it put a code on the scanmaster

 

[MistaScott]

If your counts are jumping all over the place at the same RPM the IAC could be bad. I don't think there is a code for it but I haven't reviewed my list of codes lately.

 

[onebadv6]

well its not jumping all over according to the scanmaster the #'s at idle are 00 through 05 but it idles like crap the rpm's are up and down or it will just cut off
the only thing that I have changed latly is the fuel filter and the O2 except the O2 was a nonheated

but other than this idling problem the car runs great

 

[scottyb]

00 means the ECM is no longer "asking for air" from the IAC to maintain idle, therfore the idle may rise. I'd first back off the throttle blade set screw a hair and go thru the TPS setting again. Restart the car and go from there.

www.vortexbuicks-etc.com is all the goods.

verify also that you don't have any post-throttle vac leaks. Check other related scanmaster numbers such as TSP, MAF and BLM.

 

[onebadv6]

I know the tps is set at .42 but the rest I will have to right down
tomorrow

thanks