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No Start/Fuse Panel Problems

Old 01-16-2016, 09:03 AM
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Default No Start/Fuse Panel Problems

Alright so last night I was backing into a parking spot and my 89 Cherokee died and wouldn't run. It will start but dies after about 1 second. I know that my fuel pump is not priming but is getting around 11 volts while cranking and nothing when it should be priming. I replaced the fuel pump about 5 months ago so I assume it's not the problem. Anyways once I got it home I realized that my fog lights and my led pods did not work and this is where the fuse panel problem comes into play. If you look at the picture below I circled where I get power for my relays for my fog lights and my pods.(I only use this for the low amperage side of the relay not the power to the lights) This used to be a constant source of 12 volts regardless to key position but now it reads nothing. So I'm pretty sure these two things are related because my fog lights were on when it died and now they don't work. I'm not really sure where to start but I'm at a loss and finally reaching out for help!
Attached Thumbnails No Start/Fuse Panel Problems-cherokee-fuse-panel.jpg  

Last edited by crawler487; 01-17-2016 at 10:51 PM.
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Old 01-16-2016, 11:20 PM
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With key in run position see what else in box has lost power. Possible Ignition switch issue.In fuse box there are strips each feed by a different wire from Ignition switch. If power is lost to one of them there should be other places/acc not working.

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Old 01-17-2016, 12:43 PM
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Okay.... I went out there today and while I was testing different things that one dead pin became hot again and the jeep actually started priming again. I didn't replace anything, I was just testing the different pins and I realized that everything had power again and now it works fine so I guess its an intermittent electrical problem and now I have to wait till it happens again.

Last edited by crawler487; 01-17-2016 at 04:18 PM.
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Old 01-17-2016, 05:38 PM
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I'd be looking at the connector/harness that feeds the fuse block.

0.02
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Old 01-17-2016, 10:51 PM
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I unplugged the main connection for the fuse panel and made sure it was clean and wasn't corroded or anything and it looked alright to me so I put it back in and it is still working fine. I guess If... well when It happens again I will come back to this post and start over from scratch. Unless anyone thinks there is a way to still check things even though it is working fine. I think this is the first time I have been upset that it is running lol.
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Old 01-18-2016, 06:45 AM
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I would do Tip 3 just cuz.
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Old 02-02-2016, 07:30 PM
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Alright.... so the problem is back. and it is doing the exact same thing. So I'm wondering if anyone has any wiring diagrams for the Renix fuel pump circuits. I need to start chasing wires and grounds and everything because this is driving me crazy!!!
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Old 02-03-2016, 07:06 AM
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Originally Posted by crawler487 View Post
Alright.... so the problem is back. and it is doing the exact same thing. So I'm wondering if anyone has any wiring diagrams for the Renix fuel pump circuits. I need to start chasing wires and grounds and everything because this is driving me crazy!!!
Do Tips 1,3,4, and 5 first. Those cover what you're looking for as far as grounds etc, and more.
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Old 02-03-2016, 08:06 AM
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Ignition switch going south ?
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Old 02-03-2016, 08:07 AM
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Morning Major.
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Old 02-03-2016, 12:22 PM
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Alright Cruiser once I get home from work I will do Tips 4 and 5 but I did the others within the last month.
And Freedgr I was wondering the same thing except that everything comes on when I turn the key except the priming of the fuel pump so I'm not really sure.
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Old 02-03-2016, 04:40 PM
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Alright. Sensors seem to check out fine and I went back through my plugs quickly to check for corrosion and I didn't see any. Any ideas? Could it be the ECU not sending the power for the ballast resistor circuit? Is there anyway to test the ECU to see if its working properly?
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Old 02-03-2016, 06:11 PM
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Can ya see where feed to fuel pump relay gets its power...
Attached Thumbnails No Start/Fuse Panel Problems-170934_jeep_starter_relay_1.jpg  
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Old 02-04-2016, 06:37 AM
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Freedgr Yes I can follow that but is there anymore to that diagram because It looks like its been cut off at the bottom and I'd like to see where it goes after that. Only because I don't want to miss anything.
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Old 02-04-2016, 07:34 AM
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Originally Posted by crawler487 View Post
Freedgr Yes I can follow that but is there anymore to that diagram because It looks like its been cut off at the bottom and I'd like to see where it goes after that. Only because I don't want to miss anything.
This better...

http://jeep.zerok.ru/index.php?page=XJ
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