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Old 06-16-2011, 05:07 PM   #1
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Broken IAC wire- Is this why I'm stalling?

I've had a number of seemingly unrelated problems lately, but the latest is stalling out. I fully cleaned out the throttle body/IAC and after I got it all cleaned up and as expected, nothing changed. When I turned it on I got rough idle for a minute and then it stumbled and died while parked.

I did notice one wire going into the pigtail was broken. Before I take it back to the shop, I want to know if there could be an easy fix. Since its so close to the pigtail I cant get enough wire to butt them together. One member said I may be able to push the metal clips out and then reattach the wires. Does anyone know if this is the case for this clip? I tried attaching a big battery ground cable to the broken wire but it didn't do anything. It's a dark cable with a white stripe, but given it's age I cant tell if it's ground or just a dark color.

Could a broken cable here be the cause of my stalling out when parked and while taking my foot off the gas when driving? I don't know if it will run without a properly connected IAC.


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Old 06-16-2011, 05:33 PM   #2
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An inoperative IAC would very likely, if not absolutely, prevent the engine from idling properly, if it could idle at all.

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Old 06-16-2011, 05:41 PM   #3
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As always, thanks Jerry

Do you have a suggestion for how to reconnect the wire? Can I cut them and reattach or just go to a shop?
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Old 06-16-2011, 09:53 PM   #4
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Quote:
Originally Posted by ollie526
As always, thanks Jerry

Do you have a suggestion for how to reconnect the wire? Can I cut them and reattach or just go to a shop?
My thought would be... Try getting the clips out of the connector- the dealership would have to do it anyway. Just don't mess with the wire going into the harness yet. I don't see how it could hurt, but it could help if you got it.
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Old 06-16-2011, 10:35 PM   #5
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The dealer should carry the terminals.
Will look similar to the one below.
Pull the rubber grommet off the back of the plug around the wires.
Take a thin paper clip and insert it in the front of the plug, between the plastic and the terminal, on the side that has the retainer on it. You will depress the locking tab and should be able to slip the terminal out.

If there is a stub of wire attached you could solder the wire back on and cover it with heat shrink. Other wise take the terminal with you and get a new one from the dealer.
It does take a special crimp tool, it crimps the wire and insulation in one shot.
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Old 06-18-2011, 04:34 AM   #6
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X2 on soldering it, but also you could just run down to the salvage yard and cut all 3 wires on a plug from a TJ there and just splice it into your wiring, just make sure to keep the wire lenghts the same, IE if you cut it back 4" from the plug on the one in the junkyard, cut 4" off yours and splice it there
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Old 06-18-2011, 07:33 AM   #7
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I tried Shelby's way yesterday and got most of the way. I got the yellow plastic and rubber band off, but even when I depressed the tab I couldnt get it to pull out. I tried pulling what was left of the wire with pliers but no luck. Then I tried digging out the orange rubber surrounding the wire but that didn't work either. Did I miss something? SCgeek's way could be an easy solution too. Then I could just butt connect the two ends.



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Old 06-18-2011, 11:15 AM   #8
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Originally Posted by ollie526 View Post
I tried Shelby's way yesterday and got most of the way. I got the yellow plastic and rubber band off, but even when I depressed the tab I couldnt get it to pull out. I tried pulling what was left of the wire with pliers but no luck. Then I tried digging out the orange rubber surrounding the wire but that didn't work either. Did I miss something? SCgeek's way could be an easy solution too. Then I could just butt connect the two ends.
ive done it before with fuel injectors, somehow 2 of the injectors on my volvo had broken wires so i just ran down to pick-n-pull got 2 new plugs +2-3" of wire on them and used butt connectors to make it work, only thing is like i said make sure u keep the wire lenght the same or the resistance will change slightly and play with the computer (doesnt have to be EXACT just make sure u dont add 3" of wire to the circuit lol)
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Old 06-23-2011, 10:58 PM   #9
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Well I hot a new pigtail with wires for free today from the local jeep salvage yard. I butt connected them together and fired it up but same thing. It ran OK but then got really lowafter about a minute and I was able to save it with gas but then the exhaust was smokey. I'm now getting the p0905 (IAC) and p0123 (TPS) codes. I'm hoping I just need to do a full battery reset and it'll help. If not I'm finally giving up and going back to the shop defeated...

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