rough idle

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04-01-2012, 08:20 PM

JBennett91

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rough idle

99 Cherokee 217,000 miles. Takes a second to crank with pumping the gas and idles rough and if you dont keep on the gas it'll die. Dont know how it started this but it just did and I can't figure it out. Any suggestions please

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04-01-2012, 08:56 PM

ZINGGG

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Year: 1996

Model: Cherokee

Engine: 4.0 HO Straight Six

Verify fuel pressure (plug in a gauge at the fuel rail). Your fuel pump sounds like it could be bad.

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04-01-2012, 09:00 PM

JBennett91

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I dont have a gauge for that but ill get one tomorrow I was told it could have jump time and I'm not to sure on that, or how to check that

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