jeep cherokee 4.0 jerking at 70 mph help
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jeep cherokee 4.0 jerking at 70 mph help
1997 jeep Cherokee 4.0 and its jerking when i floor it at 70 mph or above. it will accelerate fine if i slowly accelerate past 70 but not if its floored. any ideas what my problem could be? thanks
i replaced ignition coil the button under the the cap i forget what its called rotary button or something the ignition module the plugs and wires the spark plugs. i cleaned the throttle body and tps and it still does it. the rpm needle will jump all the way to the red zone like its tacking out when i floor it after it reaches 70 mph. and i have had a mechanic check the fuel pressure.
i replaced ignition coil the button under the the cap i forget what its called rotary button or something the ignition module the plugs and wires the spark plugs. i cleaned the throttle body and tps and it still does it. the rpm needle will jump all the way to the red zone like its tacking out when i floor it after it reaches 70 mph. and i have had a mechanic check the fuel pressure.
Last edited by chronic28320; 01-27-2013 at 04:09 PM.
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Year: 1995
Model: Cherokee
Engine: 4.0
Sounds like a bad misfire issue. I would start by checking the plugs/cap/rotor/wires and also fuel pressure under load. Easiest way for the fuel pressure under load would be hook the gauge up and then tape it to the windshield where you can see and read it while the problem is happening.
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i replaced ignition coil the button under the the cap i forget what its called rotary button or something the ignition module the plugs and wires the spark plugs. i cleaned the throttle body and tps and it still does it. the rpm needle will jump all the way to the red zone like its tacking out when i floor it after it reaches 70 mph.
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Year: 1995
Model: Cherokee
Engine: 4.0
i replaced ignition coil the button under the the cap i forget what its called rotary button or something the ignition module the plugs and wires the spark plugs. i cleaned the throttle body and tps and it still does it. the rpm needle will jump all the way to the red zone like its tacking out when i floor it after it reaches 70 mph.
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Year: 2001
Model: Cherokee
Engine: 4.0
I had that same problem i had and it was my fuel pump what was happening was when i got passed 65 the pump would heat up and cut out like it had no power and i would let off the gas and it would slowly gain speed
Last edited by jtm01xj; 01-27-2013 at 08:36 PM.
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