Thanks for Help

[larry.whisler]

Tom & Netters,

Is there any way to test the IAC to see if it is working?

I removed it from the throttle body unit and plugged it in
and turned on the key to see if it would retract or move the pintle.

No activity so I am wondering if this is my problem. I am having
the same symptoms you describe.

larry

 

[RF_Burns]

Larry,
I can't remember what type of EFI you have (Howell, EBL etc). I have an EBL ECM, it moves the IAC each time I turn the key ON.

If you have a GM 7747 ECM, if you goto Bob Drewes TPS setup and follow the instructions for adding a jumper. The IAC will extend and re-tract.
http://www.gmcmi.com/wp-content/uploads/2013/02/Whats-Up-with-EFI.pdf
it starts on page 21

The IAC on my original Howell TBI (Holley TB) died after a couple of years. I have a GM Rochester TB now.

--
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
Hubler 1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that

 

[RF_Burns]

Larry,
Don't power the IAC while you have it out. If you do it could eject the pintle, then after to find the pintle and spring, its hard to get back
together.
--
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
Hubler 1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that

 

[johnny]

I refer to the toad as a 'lifeboat'. I will bobtail my coach alone, but if wife and or dogs are present, so is the toad.

--johnny
--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased

 

[thomas phipps]

Towd=Escape Pod.
Tom, MS II
--
1975 GMC Avion
KA4CSG