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Jeep-Short Wheelbase All discussion of short wheelbase Jeeps: CJ, TJ, YJ and JK

 
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post #1 of (permalink) Old 05-23-2007, 01:07 PM Thread Starter
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Well...shes Dead

So i get a call from my grandfather back in charleston sc, where my jeep has been sitting in the driveway not being driven for 4 months, been the hardest 4 months of my life. anyways he has been starting the jeep occasionally to keep the motor running good and the batt. alive, he said he tried to start it the other day and got nothing from it. he said all it would do is turn over. he says he thinks it is not getting any fuel. i told him to do a fuel pressure check on the fuel rail but he is 75 years old and doesnt want to mess with it. anyways i think that it is either the fuel pump relay or the pump itself. i plan on doing a voltage check at the pump when i get back down there, but what else might it be if it is not the relay or the pump? i think it might also have somthing to do with the computer becasue if some of you guys remember back in feburary when i was trying to drive it back to seattle is was having problems with it stalling out at highway speeds ( 70 + ) mph every 30 miles or so. how hard it is to replace a fuel pump on a 97 tj sport 4.0. i heard it is kinda a PITA. what i am really trippin on is the fact that it has a full tank of gas and i am either gonna have to siphon it all out or drop a full tank.

97 TJ SPORT...2" SKYJACKER LIFT KIT, 30X9.50X15 BFG ALL TERRAINS, BLACK STEELIES, SAIL CLOTH SOFT TOP, SONY MARINE GRADE BOAT STEREO.

97 CHEROKEE SPORT
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post #2 of (permalink) Old 05-23-2007, 01:24 PM
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could it be just the battery?

when you start a vehicle a lot it pulls a lot of juice from the battery.....if your grampa didnt let it run long enough, the battery may not have had a chance to recharge fully from the alternator.....

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post #3 of (permalink) Old 05-23-2007, 01:40 PM
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Describe the problems you were having. I just went through a 5 month ordeal with my jeep in which ended with a fuel pump that could not keep up with the flow when the rpms got over about 2500. Until then it was fine. Fuel pumps are not hard to change, but the tank has to be dropped. It is not a big deal.

Jeff

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post #4 of (permalink) Old 05-23-2007, 01:40 PM
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Yep batteries can have enough juice to turn over a starter, but not enough to run the computer (10.5v I think).

Ask Grandpa to turn the key to on (Don't start) and listen, can he hear the fuel pump run?

Scott
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-Psalm 40:2
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post #5 of (permalink) Old 05-23-2007, 02:10 PM
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Sarting and running (at idle) won't help the battery at all. Really only hurts it...Needs a bunch of amps to get it started. Most alternators need to be about 1100-1200 RPM before they start to charge.

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post #6 of (permalink) Old 05-23-2007, 03:20 PM
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Quote:
he said all it would do is turn over. he says he thinks it is not getting any fuel.
not to sound too elementary, but there is fuel in the tank, right?

The belief in a supernatural source of evil is not necessary; men alone are quite capable of every wickedness. - Joseph Conrad
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post #7 of (permalink) Old 05-23-2007, 04:06 PM Thread Starter
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it has a full tank of gas. my grandpa said he filled it. i told him to just turn it key till the guages lit up and then listen for a humming noise from the gas tank. he said he couldnt hear anything. no noise of any kind.

97 TJ SPORT...2" SKYJACKER LIFT KIT, 30X9.50X15 BFG ALL TERRAINS, BLACK STEELIES, SAIL CLOTH SOFT TOP, SONY MARINE GRADE BOAT STEREO.

97 CHEROKEE SPORT
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post #8 of (permalink) Old 05-23-2007, 05:46 PM
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I'm not 75 years old, and I can't hear a fuel pump running. Can barely hear the exhaust after it starts. I don't know how good his hearing is, but I'd try a different test before dropping the tank.
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post #9 of (permalink) Old 05-23-2007, 06:36 PM
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throw a charger on it over night

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