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Old 11-16-2007, 03:43 PM   #1
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Help Jeep Wont Start

OK well I picked it up yesterday from the shop and I drove it around all lastnight and all this morning and when I go out to go to work it does not start. I tryed all the fuses and all the stuff I could think of but it sounds like Its not getting any gas so I think my fuel pump is dead.... How can I check the fuel pump?

Any help is greatly appreciated
-Billy

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Old 11-16-2007, 03:50 PM   #2
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take the fuel cap off and have someone else turn the key on, listen for a medium/high pitch whine at the filler. that would be the fuel pump running.

or, you could disconnect your fuel feed line and put it in a bottle, turn the key on and see if you get fuel in the bottle. be careful you don't hose everything down with fuel.

is it getting spark? what did you have worked on recently?


edit: did you ever drive in to a 4x4 shop near wilkes-barre pa to pick somethign up? your jeep looks familiar.

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Old 11-16-2007, 04:59 PM   #3
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I cant hear the fuel pump running at all but my friend sais that its cranking and just not grabbing...idk what that means

I just got re-geared and a super 35 installed
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Old 11-16-2007, 08:11 PM   #4
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Quote:
Originally Posted by dwdrums801 View Post
I cant hear the fuel pump running at all but my friend sais that its cranking and just not grabbing...idk what that means

I just got re-geared and a super 35 installed

hmmm. not grabbing? does he mean the starter isn't grabbing the fly wheel? does it sound like its cranking normal, fast or slow?

the first things i would do:

pull a spark plug, have someone else crank it and see if you get a spark. setting the plug on a grounded metal piece, and being out of the light will help.

if sparks i would pull the fuel line and see if it pumps.
if no fuel;
change the fuel filter
check to make sure the shop didn't accidentally crimp a fuel line
check the fuel pump relay
check wires and grounds on the underside for breaks.

if all those check out it may be a pump. for some reason they only like to go after another section of the vehicle has been worked on.

if it sparks and gets fuel, check the gear on the starter. it may be a pain to pull. do auto part stores check them for you? if so take it to your local parts store. also look to make sure the flywheel is in tact.

hopefully someone with more experience will chime in too.
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Old 11-17-2007, 04:48 PM   #5
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Went out this morning to start working on getting it running again and tryed starting it and for some reason it resurrected from the dead! So its running now but do you think its a sign to tell me the fuel pump is goin to die completely again?

Also an unrelated question that I didnt want to make another thread for.... Do I need bigger bump stops with my new set up? I have 35" with 4 inch of suspension lift and a BL" Im not worrried about the flares I just dont want to replace the Fender
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Old 11-17-2007, 08:26 PM   #6
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Went out this morning to start working on getting it running again and tryed starting it and for some reason it resurrected from the dead! So its running now but do you think its a sign to tell me the fuel pump is goin to die completely again?
strange. you might want to have a pro put it on a scanning computer and check it out. just make sure its a scaqn tool that can test and read all the systems. not just a code reader, they are useless if you aren't getting a check engine light.

it would suck to have it quit in the middle of no where, on the L.I.E. or anywhere else.

Quote:
Originally Posted by dwdrums801 View Post
Also an unrelated question that I didnt want to make another thread for.... Do I need bigger bump stops with my new set up? I have 35" with 4 inch of suspension lift and a BL" Im not worrried about the flares I just dont want to replace the Fender
got a floor jack and a few blocks of wood? or somewhere local to slowly pose it? only one way to find out!
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Old 11-17-2007, 08:35 PM   #7
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I had the same problem and the fix was bad fuel pump. It would loose pressure when you shut your rig off since the fuel pump wont be running so when you start it up you have to crank on it for quite long time till it builds up pressure and eventually start. To make sure u got the same problem try "priming the fuel pump"...method....

turn the key to on position. (turn on position is the position that is right BEFORE the start one that tries to turn on the engine - all the lights will turn on on that position)

So turn the key to ON and wait 2-3 seconds till the lights turn off. Then turn the key to off position (no need to take it out) Then go back to on position and wait 2-3 seconds till all the lights turn off. Then again to off position. On the 3rd time turn it to on. Wait 1-2 seconds and try to start it (without going to the off position).

It should fire right up. If not do the key on position method few more times so it can build up fuel pressure.

When my pump was going dead i used the priming method to start it up for few days until my appointment to go to the dealer to fix it (free - under warranty)

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