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post #16 of 43 Old 07-12-2014, 08:34 PM Thread Starter
2002jeepIN
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Ok so I replaced the asd relay and still so I guess that means I need to replace to fuel pump relay.

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post #17 of 43 Old 07-12-2014, 09:04 PM
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Originally Posted by 2002jeepIN View Post
Ok so I replaced the asd relay and still so I guess that means I need to replace to fuel pump relay.
If you previously swapped the fuel pump relay and starter relay and it cranked but did not start don't you know that the fuel pump relay is good?
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post #18 of 43 Old 07-12-2014, 10:03 PM Thread Starter
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The engine has always truned over but there has been no fuel to the engine. I haven't replaced the fuel pump relay.
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post #19 of 43 Old 07-12-2014, 10:13 PM Thread Starter
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Never mind I switched relays and still nothing. I wondering if it has anything to do the the computer or brain so to speak. Im at a lost right now
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post #20 of 43 Old 07-13-2014, 07:14 AM
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Do you have spark with no fuel pressure?
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post #21 of 43 Old 07-13-2014, 01:38 PM Thread Starter
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I do have spark
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post #22 of 43 Old 07-13-2014, 04:15 PM
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If I remember the ASD provides power to the injectors, coils, and fuel pump.

I must look again at the fuel pump. If you jam a wire in the slot going to the fuel pump when you pull the fuel pump relay and connect other end to the battery do you get fuel pressure and will it start and run?
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post #23 of 43 Old 07-13-2014, 07:31 PM
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Putting battery power to terminal 87 of the fuel pump relay in the PDC should turn on the fuel pump.
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post #24 of 43 Old 07-14-2014, 09:18 AM
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I do have spark
Grab a can of starting fluid from the local parts store. Pull the intake and have someone turn the motor over for you while spraying the starting fluid in the throttle body.

If you are getting spark, but no fuel, then the motor should fire up with some starting fluid.

His: '00 WJ 4.7 Limited- Some stuff

Hers: '03 WJ 4.7 Laredo- Some more stuff


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It is what Jeeples has *PARTIALLY* stated.
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post #25 of 43 Old 07-14-2014, 04:18 PM Thread Starter
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I jumped the fuel pump relay and it kicked on so Im going to replace the relay and see what happens. Could there be anything else causing it no to kick in
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post #26 of 43 Old 07-14-2014, 04:52 PM
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Quote:
Originally Posted by 2002jeepIN
I jumped the fuel pump relay and it kicked on so Im going to replace the relay and see what happens. Could there be anything else causing it no to kick in
According the the drawings the ignition switch provides power to the ASD relay and the PCM provides the ground to energize it. And the ASD provides power to energize the Fuel pump relay.

Let me try and post the two pages of the wiring diagrams........
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post #27 of 43 Old 07-14-2014, 05:31 PM
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Check all fuses under the hood and under the dash. Also make sure your security key is not staying on in the cluster. If you have another key try it.

Derek
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post #28 of 43 Old 08-20-2014, 04:40 PM Thread Starter
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Hey yall I finally got the gas to go to the engine it a slight break in the ground wire that grounds the fuel pump. The issue I'm having now is that when you start the enigne it acts like it doesn't want to start but it does. Once started it idles rough and when you try to accelerate it wants to die out unless the rpms are at abiut 1000. It likes to idle at around 500 rpms.what could cause this? Im thinking the timing is off. What do yall think. Thanks again for all the help you guys have givin me.
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post #29 of 43 Old 08-21-2014, 10:52 AM
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Unlikely the timing is off. And it would likely generate a misfire code. Unhook battery, touch unconnected cables together, re-connect battery.

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post #30 of 43 Old 08-29-2014, 04:44 PM Thread Starter
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I have a code the says that the number 6 cilinder is miss firing. Is this a sign of the timing is off
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