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Need help diagnosing

Old 10-24-2016, 05:25 PM
  #1  
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Model: Cherokee
Default Need help diagnosing

2003 Grand Cherokee 4.0, roughly 193k. Daily driver, no problems up until yesterday. It cranked no problem, but wouldn't start. Let it sit for a few minutes, and then it started right up like it never happened. Fast forward to today, my fiance is driving it home with our 10 week old. She stops at a stop sign, and when she tries to press the gas to go again, she said it fell to the floor with no resistance, and it did not rev up. So she pressed the brake, and then tried the gas again. same thing. so then she puts it in park. after putting the jeep in park, she said the brake pedal was very stiff and had no travel. being slightly cold, she was afraid to shut it off with the baby in the car. so finally someone came to attempt to help her. they had her turn all the lights and hazards off, and shut the engine off. after starting it back up, everything is fine. However, its been problem free for years now, im thinking the incident yesterday is related somehow. There's been a cel on forever for an evap leak, havent really cared to fix it. Where should I start to look? sorry for the wall of text.
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Old 10-24-2016, 09:27 PM
  #2  
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Location: Oroville, CA
Posts: 12,368
Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
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Start by having the battery and charging system checked out. Low voltage will cause strange things to happen.
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