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#1
11-11-2008, 07:28 PM
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97 GCL 4.0 Idle Air Control Motor/Valve
Does anyone know how to test the Idle Air Control Motor/Valve on my GCL? it is about 60$ and I would like to make sure that this is what is causing my jeep to idle extremely low then die. I have replaced the TPS the MAP and the Crank Sensor. After replacing the crank sensor it took care of my crank to start for about 6 starts then I am back to cycling the fuel pump (also new) about three times before starting. Any help is appreciated.
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1997 Jeep Grand Cherokee Limited Full Time Quadra Trac 4.0 InLine 6 178,000 Miles 
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#2
11-14-2008, 06:32 PM
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Re: 97 GCL 4.0 Idle Air Control Motor/Valve
I cant speek directly to the 4.0l but when the IAC whent out on my 5.2 it had no effect on starting. What would happen is you could start normaly and then as it came out of high idle it would die.
I believe you crank issue is the same as alot of JGC owners. I have had to crank twice for the last 3 years. My understanding is that some where in the fuel line there is a check valve, not in the pump. It it only hearsay but many people I have talked to have the same problem.
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