Have 93 jeep grand cherokee limitid the promblem is key in the on. check eng. lith doesnt come on and fuel pump doesnt come on until check eng. light does come on is it in the security system or some were else tryed replacing fuel pump key switch madgel and all relays
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If the check engine light does not light up on the dash when you turn on the ignition, at those times when your jeep doesn't want to start, then your main jeep ecm is in need of repair. The fuel pump relay will get energized only after that check engine light comes on. It's a known problem, especially with the first and second year production Grand Cherokees, 93 and 94.
The first years of that body shape, like the 93 Grand Cherokee, had ecu computer problems. Next time it won't start, check to see if the check engine light does lights up on the dash, when you turn the ignition on, before cranking. If it does not, the fuel pump will not kick on, until that check engine light does come on. It's referred to as the delayed check engine light problem, on early to mid 90's Jeeps. If you find out that is indeed the problem, you can have the ecu computer repaired.
your primary is in the tank connected to the fuel pump(but usually doesnt need change unless something goes wrong and u need to change your pump.)your 2ndary filter is on the frame rail on the drivers side, just above the
rear tire. Two hose clamps and a 11mm bolt on the fuel filter strap.Remember to relieve the fuel pressure from the tank and test port on the fuel rail that connects the the injectors.
Try cycleing ur key a few times before actually cranking it alot of the time wen a fuel pump is about to go it wont prime cycling the key will prime it. As for the fuel gauge thats part of the fuel pump its called a sending unit and in the jeeps its all in one unit. it sounds like your fuel pump is about to go tho. i had the same problem with my 93 jeep grand cherokee laredo. i replaced the fuel pump and it runs fine now u can get it from your local autozone for about 140. hope this helps let me know
Could be a sensor.I'm thinking more along the lines of a fuel pump or fuel filter.If the fuel pump is going bad..similar symptoms.Would be advisable to install a pressure gauge at the engine,and check fuel pressure when it's acting up.