Question about 1990 Jeep Wrangler

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Which fuse is the 1990 Jeep YJ fuel pump fuse

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Posted on Jan 02, 2017

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SOURCE: Jeep wrangler Fuse box

i had the same problem. i drive a 95 so im not sure if it differs from were the fuse box is. look righ above you pedals to your far left. it should be right there. also if you instruments went out it will be a 15 fuse. its a blue fuse. next my panel went out cuz of the wires on my transmission. if yor looking at your jeep at the front. the wires will be on your left. make sure they are not burned or anything. it will be right on the side of your tranny. mind got burned by the exaust so they were shorting. check that is and see if that is what is it. for a temp fix just put some electrical tap around the wires and you should be set for a wile. good luck

Posted on Jun 30, 2008

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SOURCE: Jeep wrangler Fuse box

You have two locations for the fuse box. One is either under the hood or behind the glove box. I would pull apart the glove box and take a look.

Posted on Jan 10, 2009

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SOURCE: 1990 Jeep YJ 6 cyc. Won't Start---No Spark From Coil

It would be great if you could find the Ignition Control Module!!! From my experience on my Jeep...90 YJ 4.2 liter carb. it does not have one...Computer controlled only...

Posted on Sep 10, 2009

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SOURCE: 95 jeep yj 2.5 crank but no start fuel pump not

check fuel pump relay, check main fuses

Posted on Sep 12, 2009

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SOURCE: caster adjustment for 1990 jeep yj wrangler

caster is adjusted at the rear of the lower control arms. Camber is fixed and cannot be adjusted by normal means (though special off-set ball joints are available to do that) Toe in is adjusted by turning the sleeves in or out on the tie rod ends. None of this should be done at home though crude adjustments can be made in order to get the front end reasonably straight. Adjustments are made on an alignment machine that allows precise adjustments to all you mentioned as well as front/rear tracking.

Posted on Mar 12, 2010

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I own a 1990 YJ Jeep 4.2 If I drive the Jeep every day it starts and runs great. If the car sits for several days it is extermly hard to start If I use a small amount of starting fluid, it will fire...


Sounds like the fuel pressure regulator. Its not holding the pressure over a period of time. Making it difficult to start after its been sitting.

Jul 03, 2011 | 1990 Jeep Wrangler

1 Answer

1990 jeep yj 4.2 straight 6 carburated will turn over but will not start


First try shooting some starting fluid in intake manifold, and if fires up but still won't keep running, my guess next would be your looking and checking out your fuel pump. You can check that out my removing a line and see if fuel is pumping out of the out put of fuel pump. Because it it carburated its pretty easy to trouble shoot. It's going to be in most cases spark plugs , fuel pump.

May 08, 2011 | 1990 Jeep Wrangler

1 Answer

90 yj only 70k on it sat for 2 years. 4.2 carb, ran one day now hard start, runs for 15 min. then dies. cant restart unless kept in start position. not ign. switch, fuel pump, cap, rotor, wires, plugs, or...


Check the fuel for a presence of water. I'm sure there was a recall notice on the gasket on top of the fuel tank where the sending unit mounts. My YJ sat for a year and had water in the tank from this leaking. Drain and drop the tank, replace the gasket, and reinstall.

Oct 09, 2010 | 1990 Jeep Wrangler

1 Answer

1990 Wrangler: I have a 1990 yj with the 4.2, my question for eve...


Most 90 wranglers from 89 to 95 have an ax15 5 speed transmission in them. The 4 cylinders had an ax5 transmission.

May 17, 2010 | 1990 Jeep Wrangler

1 Answer

The fuel pump doesnt come on and there is no spark.....


Check for the fuse for the fuel pump and the relay. Other than that it may be a wiring issue or a computer module issue.

Dec 13, 2009 | 1993 Jeep Wrangler

1 Answer

Missing factory throttle linkages on 1990 YJ jeep. Need Diagram


Go to any scrapyard and you can get the entire setup for next to nothing...and you can see how it's hooked up!!!

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1990 Jeep YJ 6 cyc. Won't Start---No Spark From Coil


It would be great if you could find the Ignition Control Module!!! From my experience on my Jeep...90 YJ 4.2 liter carb. it does not have one...Computer controlled only...

May 17, 2009 | 1990 Jeep Wrangler

1 Answer

No injector pulse, no current to the injector


Check the pickup in the distributor as this is the cam sensor. The injectors run of the pulses created while the rotor is turning around. It should be a plastic disk located under the rotor button.

Mar 13, 2009 | 1990 Jeep Wrangler

1 Answer

95 jeep yj wont start


have you checked the fuel pump ? the fuel pump is in the fuel tank and it may be that the fuel guage inside the tank is broken and or not attached to the pump. This is a big job but with a little help from buddys and a bit patients it can be repaired.

Jan 31, 2009 | 1995 Jeep Wrangler

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