Question about 1990 Jeep Cherokee Limited

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1990 Cherokee starts but cranks for awhile - 1990 Jeep Cherokee Limited

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  • tierdragger0 Feb 08, 2010

    I tried your advice, but didn't help. I think I will replace fujel filter and spark plugs. thanks.



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I had a 1990 jeep cherokee limited at one time and it cranked for like what seemed to be a minute or 2 and then would finally start. I did the whole test and found out it was the check valve in the fuel pump the jeep cherokee's are notorious for this. At least I know the 1990 is. I agree with donnissan you should do the pressure test to find out, but I think you will find yourself replacing the fuel pump

Posted on Feb 27, 2010

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Try this: turn key on for 5 seconds,but dont start. turn it off and turn it on again for 5 seconds then try to start it. If it starts up better, you need to test the fuel pressure.
hook up a test gauge to the test port on the fuel rail, try to start and watch fuel pressure, after it its max turn engine off, it should then hold pressure for a few or more minutes. if it doesnt there are three things that can let it bleed down.

There is a check valve built into the fuel pump that could be stuck open,
An injector could be leaking,
Or the pressure regulator could be leaking.
If it still has problem check your spark plugs to see if they are worn out with too much gap.

Posted on Feb 06, 2010


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