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Anonymous
04 Jeep WJ Startig Issues 2017-08-28 05:25:18 Post No. 17786597
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04 Jeep WJ Startig Issues 2017-08-28 05:25:18 Post No. 17786597
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Hey /o/,
Wondering if anyone here can help me figure out this problem:
Back in December my fuel pump went, so I got it replaced. Earlier this summer it would take me multiple cranks to start my car, took it in, they warrantied out again. After that I took it in again. So in the past 9 months I've had my fuel pump changed three times.
>When I go to start my car any time of day and even when warmed up, I have to crank it two to three times
I figured it's the check valve but the check valve comes in that fuel pump assembly and it's been replaced three times.
>tldr '04 grand Cherokee having starting issues and sometimes the brake and gas pedals vibrate/flutter after startup
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>>17786597
sounds like maybe a fuel pressure regulator issue or a clogged fuel filter. see if either are external from the pump, i think the filter is
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>>17786648
Will do; my mechanic clearly doesn't know what the issue is... could it be the spark plugs?
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>>17786597
Jeep 4.0's are notorious for having CKP's and neutral safety switch going bad, which would cause your problem.
I also find it hard to believe that 4 fuel pumps have gone bad.
Get a fuel pressure test kit from Oriely's and make sure it's in spec with your manual
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>>17788094
Had my crankshaft sensor replaced three years ago
I'll check out the other stuff, thanks!
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>>17788094
Oh and the mechanic said he tested the pressure and it held at 50 psi and didn't lower. So it's gotta be something else then
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Check battery load and test starter solenoid and the starter itself while you're at it. Could be a bad sensor, if the fuel pump is fucky check the lines for the pump itself.
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