Question about 1990 Jeep Wrangler

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1990 fuel problem

I have a 1990 wrangler . and my problem is that it same like after it rains. the fuel pump stop working. And it will turn over but will not start. i've replaced. The fuel line, the computer, spark plugs and wires. and fuel pump. and new starter

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Check the wiring that runs behind the battery for damage. also check the pdc for corrosion on the underside of the fuel pump and asd relays

Posted on Jan 19, 2009

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What would make a1990 jeep wrangler engine stop after getting hot


It maybe the fuel pump shut off when it get hot. Once it turns off have someone listen in the back to see if they can hear the pump come on. Also you can spray some carb cleaner inside the intake manifold when the car does not want to start. When you spray it try to start the car, if it starts right up you have a fuel pump problem. Otherwise check out your crank and cam position sensors as they tend to have the same symptoms.

Also, you will need to check out the crank position sensor, when the car turns off you can perform a spark test and see if you are getting good spark.

Hope this helps; also keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

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Oct 23, 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

I have a 1990 4 cyl jeep wrangler i just filled tank with gas drove 1 block and jeep stalled. Jeep starts right back up but will not stay running seems as though its not getting enough gas. Is this a fuel...


if you just filled up i might be dirty fuel go get some fuel injector cleaner stp is good, lucas is better dump in your tank and cross your fingers you might have to start up a couple times.

May 15, 2010 | 1990 Jeep Wrangler

1 Answer

Jeep stops while driving


ecu is the computer for the car. if he haves a engine light on have him go to a auto parts store to get tested. have him make sure the oil level is not to low this could make it die out on him.

May 15, 2010 | 1990 Jeep Wrangler

1 Answer

Jeep Wranlger starting problems


the Ignition switch is the likely culprit, other than that you have a starter relay and then the wiring. You already verified the starters good.

Apr 26, 2010 | 1990 Jeep Wrangler

1 Answer

I have a 1990 4 cyl jeep wrangler i just filled tank with gas, drove 1 block and jeep stalled. Jeep starts right back up but will not stay running, seems as though its not getting enough gas. Is this a...


It could be the pump but you need to verify if you can hear the pump running after it stalls and you turn the key back on to try and start it. If you don't hear it it isn't running.
The pump is inside the tank but it dosen't come inside, you need to put it in there. That requires removing the tank. On a 90, there is a filter mounted on the chassis near the left rear tire. I'd replace that first as if you replace the pump, that should be replaced as well and if it's plugged up it may in fact be the only problem.

Mar 26, 2010 | 1990 Jeep Wrangler

2 Answers

Back fuel pump is running all the time and is pumping fuel into front tank on a 1990 ford f150


I would drop the tank and replace the pump. These types of problems are fire hazard.

Oct 26, 2009 | 1990 Ford F150

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

1900 wrangler will not start.


Why are you so sure it's the fuel pump?

Are (ALL) the plugs getting spark?

Is there adaquate back pressure?

Is there good compression?

Have you confirmed a circuit to the fuel pump?

Is the pump getting voltage and ground?

Have you confirmed a working fuel pump relay?

Dec 28, 2008 | 1990 Jeep Wrangler

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