I have a 2000 Jeep Cherokee Sport 4x4 with a 4.0 inline six. About 2 months ago it shut down on me while I was in line to pick up my kids from school. I had to pull it home because I couldn't get it to start. My husband and I have replaced the fuel pump because it would not come on. After putting the new one in, its still not coming on. Since then, we have replaced both the cam and crank sensors and not only is it not firing, but now all the gauges are not working, the fuel pump is still not coming on, and there is a no bus on the odometer. We've checked all the fuses and have replaced the fuel pump relay, but still nothing. I've read a few threads on here about this and we have done a few tests I've seen, but still nothing. Can anyone help lead us in a direction to find and fix the problem? We are both going crazy trying to fix it as it is our only vehicle at the moment. Any help with this will be greatly appreciated.
We bought the sensors from Autozone, I read on another thread that Jeep parts are better but we couldn't afford it. We did test it and it is a good one, but I just replaced that sensor a year ago because it shut down on me 2 years ago. Am I going to continue having problems like this?
Cheap crappy "Lifetime Warranty" parts are often out of specification, or even failed, right out of the box. Many times they have a short service life before they fail. Always buy top quality replacement parts and genuine Jeep sensors. Numerous threads detail long and frustrating searches for a phantom "problem" that ended up being cured with genuine Jeep repair parts.
Cheap parts are cheap for a reason.
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We're still having trouble with the fuel pump not coming on, I don't have an owner's manual so its kinda hard to trace wires when you don't know what wires go to where. Do you have any diagrams or anything that could help us trace wires? We also need some help figuring out what to do about the gauges, none of them are working. Thanks in advance.
To test the fuel pump. Pull a known good working headlight from the vehicle. Disconnect the fuel pump wiring harness. Jumper the fuel pump wiring harness to the headlight. Attempt to start vehicle like you normally would. Does the headlight shine bright for about 2-5 seconds????
Make sure the battery is strong, don't assume. Put that battery on the trickle charger for 5 hours or so.