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How can I check the connector to the IAC itself to see if it's bad??
I've come to the conclusion today that my IAC is non-functional and I was wondering if there was a way to check the connector itself to see if the wire(s) are bad. My connector is pretty fudged up and I'm wondering if maybe the wire is bad and not the IAC itself. Spending $40 on a new IAC and finding out it's the wires that way is really not my idea of fun.
------------------ 1986 Trans AM
355 TPI
4 Wheel Disc Brakes
9 bolt Borg Warner Rear (2.77's....oh joy) :P
6" rods, approx. 9.7:1 Compression, Stock TPI (soon to be ported), 24#/hr LTI injectors (cleaned and flowmatched by Cruizin Performance), Hedman Shorty Headers, 3" exhaust with 80 series flowmaster, SBC 993 heads completely redone and modified for 1.6 RR, 1.52 RR (for now), Comp Cams XE262-14 TPI Cam, Holley AFPR, TPIS airfoil, MSD wires, MSD 6-AL Ignition, Hypertech 53,000 volt coil.
<font face="Verdana, Arial" size="2">Originally posted by 8Mike9: Well, what you'll need is a wiring diagram for the car, beg, borrow or steal a helms, or hope that Vader posts the one from his T/A
You'll need a ohm metere to verify continuity once you have the schematic.</font>
I already knew that much. What I need to know is things such as... how to test it... what the voltage or resistances are supposed to be, etc.
I think you're supposed to check the resistance in the coils or something. I also have heard of another way to test the harness: probe each terminal of the harness one by one with a grounded test light while the car is running, maybe turn the AC on and off to make the computer command the IAC to move. The light should slowly fluctuate on and off for each wire.
<font face="Verdana, Arial" size="2">Originally posted by ViciousZ: I think you're supposed to check the resistance in the coils or something. I also have heard of another way to test the harness: probe each terminal of the harness one by one with a grounded test light while the car is running, maybe turn the AC on and off to make the computer command the IAC to move. The light should slowly fluctuate on and off for each wire.
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Good theory...too bad I can't turn the AC on and off... AC has been deleted. How 'bout the heater you're probably thinkin.... well, it doesn't work anymore either. It worked before my engine swap.... after the new engine went in, it quit workin'.... go figure. Right at the start of the winter. Can we says brrrrrrr.
------------------ 1986 Trans AM
355 TPI
4 Wheel Disc Brakes
9 bolt Borg Warner Rear (2.77's....oh joy) :P
6" rods, approx. 9.7:1 Compression, Stock TPI (soon to be ported), 24#/hr LTI injectors (cleaned and flowmatched by Cruizin Performance), Hedman Shorty Headers, 3" exhaust with 80 series flowmaster, SBC 993 heads completely redone and modified for 1.6 RR, 1.52 RR (for now), Comp Cams XE262-14 TPI Cam, Holley AFPR, TPIS airfoil, MSD wires, MSD 6-AL Ignition, Hypertech 53,000 volt coil.
No AC? Then have a buddy shift it in and out of gear. Sometimes you don't even have to do that, the computer will send pulses anyway. The heater won't do the trick, the AC only works because it places a load on the engine.
<font face="Verdana, Arial" size="2">Originally posted by 86TpiTransAm: I've come to the conclusion today that my IAC is non-functional and I was wondering if there was a way to check the connector itself to see if the wire(s) are bad. My connector is pretty fudged up and I'm wondering if maybe the wire is bad and not the IAC itself. Spending $40 on a new IAC and finding out it's the wires that way is really not my idea of fun.
</font>
Install a new connector, they cost under $10.US and can be had almost anywhere.
PEP BOYS carries Part #85112 which fits 82 to 94 GM, under the brand name CONDUCT TITE!
<font face="Verdana, Arial" size="2">Originally posted by PALM BEACH IROC-ER: Install a new connector, they cost under $10.US and can be had almost anywhere.
PEP BOYS carries Part #85112 which fits 82 to 94 GM, under the brand name CONDUCT TITE!
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Thanks... we have a pep boys about half hour from here. I didn't know they sold those type of connectors though. You learn something new everyday. Thanks again.
------------------ 1986 Trans AM
355 TPI
4 Wheel Disc Brakes
9 bolt Borg Warner Rear (2.77's....oh joy) :P
6" rods, approx. 9.7:1 Compression, Stock TPI (soon to be ported), 24#/hr LTI injectors (cleaned and flowmatched by Cruizin Performance), Hedman Shorty Headers, 3" exhaust with 80 series flowmaster, SBC 993 heads completely redone and modified for 1.6 RR, 1.52 RR (for now), Comp Cams XE262-14 TPI Cam, Holley AFPR, TPIS airfoil, MSD wires, MSD 6-AL Ignition, Hypertech 53,000 volt coil.
