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Old 04-13-2008, 10:27 AM   #1
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jeep engine/fuel problems.....

im so frustrated i could shoot it right now..... it was running shitty the other day, and just got worse, so i changed the fuel filter out... obviously it hadn't EVER been done. it was black/brown nastys. so i got the new filter in, put a can of sea foam into the gas and ran it for about 2-5 minutes. it was running fine, and reved up like normal. i wasnt able to take if for a ride, too many vehicals in the way. so i took another vehical to work yesturday, came home from work this morning and it had a really rough start, followed by a couple rough stalls. but i got it out of the garage, started going down the road, and no power... when i pushed the gas it would rev down, and almost stall. but when i let off the gas it would rev up to two thousand rpms. then when i tryed to get home, it would barley make it go, every time i let out the clutch it tryed to stall out. i had to feather the clutch and the gas just to creap home. i checked the oil, it was full, its full of fuel..... i am out of ideas. i dont know weither the computer is going out, or i need a new fuel pump. either way i'm pissed. if you have any suggestions please help me out. its driving me crazy!!!! oh yea its a 4.0, 5 speed, efi

Steve

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Old 04-13-2008, 10:57 AM   #2
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computer is unlikely, check for codes by turning key from off to on three times, and count cel flashes. sounds like possible throttle position sensor.

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Old 04-13-2008, 11:01 AM   #3
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i didnt think about the tps, but its a good possibilty. thanks. is there any way to really test the tps?

Steve
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Old 04-13-2008, 11:29 AM   #4
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graph it with a scan tool or lab scope, is the only real way, checking resistances and voltage is possible w/ manual and multi meter.
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Old 04-13-2008, 11:56 AM   #5
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would that also make it not want to accelerate over 1200 rpms? cause that was the problem before.

Steve
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Old 04-13-2008, 12:22 PM   #6
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yup

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