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Old 03-05-2011, 02:35 AM   #1
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Default 89 cherokee stalling after warmed up

89 jeep Cherokee limited, AT, 4.0L, tow pkg. About 5-10 minutes after she is running, I put her into reverse and she stalls/dies. Starts right up in P or N. Then at stop signs/lights, she will stall/die, but start right up. Under acceleration, she will stall for almost a full second and then kick back on. I have replaced the Fuel filter, Tps,Cps,Map sensor, plugs, cap,rotor,gas cap, and I jumped the fuel pump relay. The Iac and plug wires are newer.(less than 3 months old) Fuel issue maybe? Return hose or vent tube blockage? Would Seafoam help?
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Old 03-05-2011, 04:10 AM   #2
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have you trouble shooted this problem in a repair manual yethttp://www.filestube.com/537d2723635...ual-84-93.html
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its all in your altitude,horn broke watch for fingerWhen asking for help here and not listening to test procedures why ask.

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Old 03-05-2011, 04:25 PM   #3
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Ya, and because I have replaced everything it could be, I'm kinda stumped. Maybe an ignition switch and coil pack is what I need. I've heard heavy keychains can ruin an old ignition switch.
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Old 03-09-2011, 05:42 AM   #4
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Ok, so I think that it's now looking at either 1 of 2 things. 1)Engine coolant temp sensor. 2)Knock sensor. The coolant temp sensor makes a lot of sense to me because when it fails, it sends a faulty signal to the ECM and dumps fuel into the engine. The O2 sensor reacts by leaning out the engine. The ECM thinks that the coolant is at -40, and makes adjustments to run. I'll take it to my mechanic and have him replace both sensors. Wish me luck!!! ,-D
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