911 Help! fuel pumps keep going out - Page 2 - JeepForum.com

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post #16 of 25 Old 08-28-2014, 03:43 PM
Que89YJ
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The wiring causes a voltage drop. Bad wiring causes a BIGGER voltage drop. When voltage decreases current increases. A bad connection will cause more current and wires don't like too much current. A motor is nothing more than a bunch of wire. Look at what's under the tape and see what you are dealing with. After you deal with the connection issue I would ground for the fuel pump is ridiculously long as the have said. I would take the ground wire and cut it a few feet in front of the tank and put an islet on it and ground it right to the frame in the rear.

To check your voltage at the pump in the rear you can jumper pin 30/87 in the fuel pump relay socket. That will give you constant power and measure the voltage at the pump.

The pumps you are getting from the auto parts store are probably the airtech junk. You can search the forum fur people that have had the issues with them just like you are.

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post #17 of 25 Old 08-28-2014, 03:47 PM Thread Starter
Moabjeep77
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That's what I'm going to do first is un wrap the tape and see what's going with that.
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post #18 of 25 Old 08-28-2014, 04:07 PM Thread Starter
Moabjeep77
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Also what fuel pump should I get? as soon as I get this figured out...
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post #19 of 25 Old 08-28-2014, 04:22 PM
mike134
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snap a picture of whats under the electrical tape. If I had to guess, you're just going to find one of these protected by the tape:

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post #20 of 25 Old 08-28-2014, 04:28 PM Thread Starter
Moabjeep77
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Mike, is that going to be a bad thing? If so whats the fix?
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post #21 of 25 Old 08-28-2014, 04:59 PM
mike134
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The low quality ones are very easy to screw up and hard to inspect because of the rubber coverings. I had a box of them from autozone that I threw away because the metal would would crumble when crimped on (terrible quality). I use the high quality ones in the laboratory with good success, but the techs won't use them for flight equipment because failure is not an option.

If you find a solder joint instead of this type of crimp connection, remove it right away then look for more of them elsewhere because they will certainly fail in the future.
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post #22 of 25 Old 08-28-2014, 06:22 PM Thread Starter
Moabjeep77
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I tried posting pics from my phone but they are to big it says, anyways there is one wire the Orange with black stripe has a blue wire connector on it, looks like it broke off pretty close to where it goes into the male end of the harness...

Last edited by Moabjeep77; 08-28-2014 at 11:27 PM.
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post #23 of 25 Old 09-01-2014, 03:49 PM Thread Starter
Moabjeep77
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What should I do? New weather pack connectors? And cut and mount ground wire near the tank some where
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post #24 of 25 Old 09-01-2014, 06:41 PM
Mike Romain
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Quote:
Originally Posted by Moabjeep77 View Post
What should I do? New weather pack connectors? And cut and mount ground wire near the tank some where
I would change the connectors, but leave the ground as close to the battery as possible.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
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post #25 of 25 Old 09-01-2014, 07:46 PM Thread Starter
Moabjeep77
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Ok I'll try that...
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