1996 Jeep Cherokee Repair Question
96 Jeep Grand Cherokee 4.0L Fuel System Down
So, I disconnected the wiring harness at the gas tank and check for continuity through to the pump/sending unit. I found continuity across two of the four terminals. On the supply side of the harness I found no power with the ignition key turned to the run position. I don’t see any damage to the wiring from tank to fuse box.
I know that due to the miles on the truck I should suspect the pump unit, but I’m really not sure its getting any power. Could it be something simple I’ve overlooked? Fuses seem good, but I don’t know about the little black relays thingies in the fuse box – do they ever go bad? I’m looking to get out of this cheaply as I just sank $1500 into a new front suspension thanks to my boys accidental, rainy night, ditch run.
I qwould try a new fuel pump relay in the power distribution center. Pretty simple system. It completes the power circuit thru the ignition switch and the PCM. If this relay is not bad, then the only items left are the pump, PCM and ignition switch. I would think pump, but if you are not getting power to the pump, it may be something else. If the relay change doesnt fix the problem, supply power to the pump and eliminate that.
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