Question about 1998 Jeep Cherokee

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Doesn't want to start at first

When cold at first the engine won't start, but immediately after I turn the key off and then back on it starts fine. Started this about a year ago and always starts the second time, but has gotten worse. Gas pressure when checked just slightly low. Someone suggested computer, ??

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  • txchs Sep 05, 2008

    One dealer told me there was actually a bulletin on Cherokee check valves, but did not include my year. Could that account for fuel pressure variability while driving? I notice my gage moves sometimes. When I stop after driving sometimes my engine revs up without me doing it. What do you think?

  • txchs Sep 05, 2008

    Sorry I wasn't very clear on my descriptions. My fuel gauge sometimes moves up and down. It will act as if it is changing level at which time I notice no change in how jeep is running. I know it could be the gauge itself but I don't think it is. And when I put it in park after driving many times the engine revs and the rpms go up considerably, as if I am giving it gas, but without me doing anything and then drops back down if I wait a minute. That is why someone suggested maybe it is a ECM problem. Thanks for your suggestions.

  • txchs Sep 09, 2008

    I tried your suggestion and my Jeep started right up, so I believe you are correct that it is my fuel pump! Thank you so much!

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Before you crank try and cut key on for 5-10 seconds then off and back on then crank if cranks up then you have a fuel problem. this will allow pump to run and pump fuel up. could be a bad check valve in pump causing fuel to drain back

Posted on Sep 05, 2008

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  • TripleTauto
    TripleTauto Sep 05, 2008

    WHEN YOU SAY GAUGE MOVES YOU MEAN PRESSURE GAUGE? sorry for caps try what i said this will pump fuel up to engine if you have a gauge on it watch the gauge after you cut truck off if almost immediately goes to zero then bad valve

  • TripleTauto
    TripleTauto Sep 05, 2008

    the fuel gauge is probably a fuel level sender.Clean your throttle plate this may help with idle problem

  • TripleTauto
    TripleTauto Sep 10, 2008

    no problem glad to help

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