Jeep will not stay running
#1
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Join Date: Jan 2009
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Model: Cherokee
Jeep will not stay running
I think I screwed up the last thread? Anyway I have changed the O2 sensor, the resistor on the side for the fuel pump, and the engine control unit. It will run about 5 seconds and then stop.
#2
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Location: Oak Harbor, WA.
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Year: 1987
Model: Cherokee
Engine: 4.0 liter RENIX I-6, DIY Cold Air Intake, 2.5 FM Exhaust, 3 Core Radiator
Sounds like a bad fuel pump to me. Hook a pressure gauge up to the fuel rail test port and just turn the key to on. Once you hear the fuel pump prime, if you don't have 30 PSI. the fuel pump is bad. If you get 30 PSI next, you need to disconnect the vacuum hose to fuel pressure regulator. The pressure should be 38-39 PSI. If you don't, the fuel pressure regulator is bad.
#5
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Year: 1989
Model: Cherokee
Engine: Inline six
Aubrey,
I had a similar issue where it would start and die after 5 sec. I replaced everything, except for the fuel pump. I bought a rebuild kit for my 89 for $70 dollars and after two weeks of replacing parts it started right up.
I had a similar issue where it would start and die after 5 sec. I replaced everything, except for the fuel pump. I bought a rebuild kit for my 89 for $70 dollars and after two weeks of replacing parts it started right up.
#6
ballast resistor inside right fender by air box, there are two wires going to this unplug them both and put a wire bridging the to.... it WILL run, your resistor is bad i can almost guarantee
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