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Old 06-22-2013, 11:34 PM   #1
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Fuel Pump Issue??????

I have a 95 Wrangler 4.0 and recently it started to cut out and sputter and try to die after I have driven it for a couple miles. If I stop for 10 minutes and let it rest it will start back up and go for a couple more miles. It seems to not do it if I have a fuller tank and it idles fine, its only when I'm on the throttle that it seems to do it. Replaced fuel pump 6 months ago and today I replaced rotor and distributor cap. Fuel pump is pumping but not sure if right pressure?? Could it be an oxygen sensor? Please help me I need expert advice!

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Old 06-22-2013, 11:38 PM   #2
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Happened to me to then after a couple weeks it won't start!

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Old 06-22-2013, 11:56 PM   #3
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So did you figure out what it was? I'm not sure exactly what would be the next best fix since it could be so many possibilities it seems like.
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Old 06-23-2013, 12:43 AM   #4
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So did you figure out what it was? I'm not sure exactly what would be the next best fix since it could be so many possibilities it seems like.
I'm having a similar issue with my 88 Wrangler with the 4.2 six. I have replaced plugs, wires, cap/rotor, Distributor pick-up coil, fuel pump, coil, coil connector, Ignition module, and fuel filter and the miss/stumble still exists. My next step is to rebuild the carb and change the o2 sensor.
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Old 06-23-2013, 11:01 AM   #5
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My 87 does it too and I'm convinced my carb has some issues whether it be out of adjustment or a vacuum leak but I'm convinced its my carb
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Old 07-02-2013, 10:05 PM   #6
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It could be the fuel pump,the wiring to the gas tank is bad,computer bad,the crank sensor bad or the fuel lines are clogged.

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