Question about 1991 Jeep Wrangler

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Wiring diagram for a 1991 wramgler fuel pump

I am replacing the fuel pump on my wrangler. have the tank and pump down, disassembled and ready to wire the pump in. i have assumed the two wires on top of the pump go to the corresponding blades on the top of the mount. The issue is the wire that appears to be a ground on the mounting post, and the lack of wiring on the gauge unit.

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See rthe link and go to bottom of the page..
Jeep Workshop Manuals
wiring diagram for a 1991 wramgler fuel pump - mjk-hd2gaexkk5xamahzjtbr5cso-4-0.jpg

Posted on Nov 07, 2017


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Posted on Jan 02, 2017

  • 1224 Answers

SOURCE: insatalling a towbar on a wrangler

tow bar mounts directly to chasis or the front bumper steering wheel locked in place

Posted on Jun 10, 2008

  • 85206 Answers

SOURCE: Stock 1995 Jeep Wrangler stereo wiring harness missing/cut off.

1995 Jeep Wrangler Car Stereo Radio Wiring Diagram.
Car Radio Constant 12V+ Wire: Red/White
Car Radio Switched 12V+ Wire: Purple/White
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Blue/Red
Car Radio Dimmer Wire: Red/Black
Car Radio Antenna Trigger Wire: N/A
Car Radio Amp Trigger Wire: N/A
Front Speakers Size: 4′ x 6′
Front Speakers Location: Dash
Left Front Speaker Wire (+): Gray
Left Front Speaker Wire (-): Yellow
Right Front Speaker Wire (+): White/Red
Right Front Speaker Wire (-): Brown/Red
Rear Speakers Size: 4′
Rear Speakers Location: Rear Roof
Left Rear Speaker Wire (+): Gray/White
Left Rear Speaker Wire (-): Brown/White
Right Rear Speaker Wire (+): White/Black
Right Rear Speaker Wire (-): Brown

Posted on Apr 09, 2009

  • 55 Answers

SOURCE: 1980 CJ 7 Fuel gauge/ sending unit issues

there is a lead that you must be missing. but given its age, i would run a new wire. the gage should have 3 wires out the back. positive , negative, and the signal wire.

Posted on May 27, 2009

  • 169 Answers

SOURCE: 91 Jeep wrangler New everything idles rough, no Power then dies

you check for miss how is compression

Posted on Aug 29, 2009

  • 9 Answers

SOURCE: the fuel gauge on my '92 jeep wrangler is stuck on

sounds like ur sensor has **** itself, easyist way to fix is to get a aftermarket sensor but you will have to match it to the omes of the original one.

Posted on Feb 10, 2010

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Need afuel pump wiring diagram for1991 jeep wrangler with 2.5 litre engine

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Sep 03, 2012 | 1991 Jeep Wrangler

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Where is the fuel pump relay on a 1991 gmc jimmy

Thye fuelpump relay is located to the right of the brake booster. this is for a 1991 gmc jimmy (s-15)

I have enclosed a diagram to help locate the relay.

The most common reason for no fuel pressure on these trucks is not the relay but rather the fuelpump itself. the pump is located inside the fuel tank.

There is also a problem with the wiring to the fuel pump, you will need to locate the top of the tank and then off to side of tank is wiring .
This wiring comes off the top of the tank, you will need to check and there is connector problems..
there is one or two ground wires that come off wiring to top of tank which run to frame, check to make sure the grounds are good. if you end up with a bad pump you will see a notice to rewire a new fuelpump connector. hope this is helpful. good day.3_4_2012_1_29_16_am.gif

Mar 03, 2012 | 1991 GMC S-15 Jimmy

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We have a 1991 jeep wrangler 4.0 and we changed the fuel pump and now the coil is getting no fire when i hook the battery back up

My 1991 Wrangler would alternate between no spark and no fuel. After replacing the crank sensor, the coil, and the fuel pump twice I started chasing wires looking for a bad ground. There is a black with a yellow stripe wire that comes out of the rear body harness between the front e brake mount and the front door post(very hard to get at)right above the bottom dash edge that should be securely grounded to the front e brake mount. As soon as I secured that ground everything worked properly again.

Sep 15, 2010 | 1991 Jeep Wrangler

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1991 chevy cavalier- stopped running going down road. Replaced fuel pump and fuel pump relay-ran for two weeks and the when making a stop,cut off again and won't start and is blowing the fuel pump fuse...

Sounds like a short between the fuse panel and the fuel pump relay. This can be from the fuel pump relay itself through an exposed bit of wire, or even a defective relay which seems to happen more than most times. Check the wiring to the relay and wrap or tape anything where bare wire may be exposed. Disconnect relay and try a new fuse. IF the fuse doesn't blow, then the problem source is the relay itself that is defective.

Hope this helps!

May 31, 2010 | 1991 Chevrolet Cavalier

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My gas guage will not work on my 1991 buick riviera what do i need to fix it?

about 98% of fuel gauge issues are the fuel sender in the gas tank. This is part of the fuel pump assembly, and is replaced with the fuel pump. There is another place to check though. The wiring that goes to the fuel sender can get unhooked (possible, but not often happens). The connector is above the gas tank; either way you would have to take the gas tank down. By attaching a rheostat or variable resistor, you can test the wiring and gauge system to see if it works. If it does, then you know that you need to replace the pump to get it working again. If not, then you have wiring issues between the pump and the dash. Hope this is what you're looking for.

Dec 09, 2009 | 1991 Buick Riviera

1 Answer

My 1991 jeep wrangler fuel pump is not turning on? I don't know what is wrong.

If you are positive that your fuel pump is not working, then it is time to replace it.

You can find the fuel pump either inside the engine compartment or inside the gas tank, depending on the engine that you have in your wrangler.

Since it is likely that you have the inline 6 cylinder 4.0, the pump is most likely inside the tank.

Go ahead and pull it if you are sure that is the problem and take it to be tested by your local auto parts store.

Nov 10, 2009 | 1991 Jeep Wrangler

2 Answers

The fuel pump, CV joints, plugs and wires all need replaced

I love my Stanzas.. Years ahead in design .. Drove the girlfriends new 2009 Dodge Calibre today and amazes me that all the column stalk controls are almost the same as my 1990 GXE ..
The good news is you don't have to drop the gas tank !
Just remove the upper portion of the back seat for access to the fuel pump and the sending unit : )

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I've never heard of this. Where are you getting the fuel pumps? Are they made by carter? It is more likely that low voltage or weak ground would be burning them up.

Mar 12, 2009 | 1991 Jeep Wrangler

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I need to know the color of the wires leading to the fuel pump.

Sep 08, 2008 | 1991 Jeep Wrangler

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