Question about 1993 Jeep Grand Cherokee

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My jeep will crank but not start. fuel pump will not pre-pump unless key is on ON position for 20 minutes and check engine light comes on

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  • yadayada
    yadayada May 11, 2010

    replace the fuel pump/

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  • Jeep Master
  • 420 Answers

You need to get the code read for the check engine light. Localy Auto Zone will do it for free. It also sounds like you need a new fuel filter.

Posted on Apr 21, 2009

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1 Answer

Jeep will crank but not fire, check engine light will not come on so I can get codes.


Need to check spark and fuel start by picking up a tester for the wires it plugs in like a spark plug and has a light that will come on if you have spark the next disconnect the main fuel line to the fuel rail and turn the key to the on position if u get fuel out of it the the pump is good

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Your jeep ecu is in need of repair. It has what is referred to as the delayed check engine light problem. If you'll notice, next time you try starting the jeep, it will not start when the check engine light finally comes on, on the dash. The fuel pump will only come on when the ecu finally energizes the relays, and that's when all the clicking starts. Look on ebay for an ecu repair service.

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If your check engine light does not illuminate when you turn the ignition on then your jeep ecu is in need of repair. The check engine light has to be on for the fuel pump to get power. Try leaving the ignition key in the on position for a few minutes to see if the check engine light does eventually come on and if the fuel pump starts to work then.

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96 jeep cherokee with 4.0 HP it cranks but the fuel pump and coil does not have any power and i checked all fuses


Look at your dash when you turn the ignition key to on; is the check engine light coming on, in the dash? If not, your ecu may need repair. You can try leaving the key turned to the on position, for about 30 minutes, to see if the check engine light does finally come on . If it does, the jeep usually will then start. If that is the case, your ecu definitely needs repair.

Feb 20, 2011 | Jeep Cherokee Cars & Trucks

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No spark to the coil or the fuel pump. All fuses good. Check engine light does not come on.


Sounds like you need to have your ecu engine computer repaired. It's a common problem with that generation Jeeps. Try leaving the ignition key turned to the on position, for appx. 30 minutes, to see if the check engine light does finally come on, and if the Jeep will start then.

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When i tearn the key on the fuel pump doesent come on and theres no spark it will roal over but wont start


Your ecu is going bad or has gone totally bad. If your check engine light does not come on when you turn the ignition to on, before cranking, then the ecu is bad. If you leave the ignition in the on position, for up to 30 minutes, and the check engine light finally comes on and then the jeep starts, then the ecu can be repaired. Try that and see if it works.

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1 Answer

I have a 1993 Jeep Grand Cherokee Laredo. I love the jeep. I have 380,000 original miles on her and never had any problems. BUT.. When I go to start it now all it does is turn over. Will not start. If I...


If the check engine light comes on then there must be a trouble code stored in the PCM memory. What is the code when you turn the key on,off,on ,off... then leave it on....count the engine light blinks. (Don't start the engine during the key procedure) each series of blinks will be a digit.

Nov 28, 2010 | 1993 Jeep Grand Cherokee

1 Answer

No Start


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Jan 29, 2009 | 1993 Jeep Grand Cherokee

1 Answer

2002 Jeep Grand Cherokee Laredo 4.0L won't start


Crank position sensors are a big problem in these vehicles. Scan the Jeeps computer and post any codes you come up with.

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2 Answers

1997 Jeep Grand Cherokee cranks but won't start


Same thing happened to me at about 140k. It was the fuel pump. Best way to test if your pump is failing and loosing pressure is to see if the car will start immediately after it has been running, or turn the key to the alt position for a few minutes before starting. If your engine fires faster after it has been running or the key has been in the alt position you will probably need a new fuel pump. Great news is with a very deep socket to get the tank straps off its a 30 minute job to replace the pump/filter assembly.

Dec 17, 2008 | 1997 Jeep Grand Cherokee

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