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Unread 12-16-2008, 01:11 PM   #1
Robsho67
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1999 XJ Cherokee 
 
Join Date: Dec 2008
Location: Lincoln, Il
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99 Grand Cherokee Laredo

Starts right up and runs fine, Few mins after running it loses all power, Put the Pedal to floor and acts like no fuel, no power. Drove 50 miles last night and no problem, On way back home, Seemed like no power, was able to make it back to town, but after getting off interstate, not much power to get through side streets. Left Parked over night, Started right up this morning and ran fine. Drove 3 blocks and then no power, put in neutral and reved up, seemed like no fuel. Parked it and came back 10 mins later, Started right up, reved up and had plenty of power. Please advise!

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Unread 12-16-2008, 01:21 PM   #2
the88thpianoman
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2003 WJ 
 
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Intermittent fuel pump could be the problem. When was the last time it had a general tune up, including fuel filter, which could also be the problem if it is excessively clogged.
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Unread 12-16-2008, 01:27 PM   #3
letsgomuddin
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Sounds like a plugged fuel filter or bad fuel pump to me, problem is the pump is in your tank and I think the filter is too. Check your fuel pressure with a gauge attached to your fuel rail. You should be able to find out what it should be in a haynes or chilton book, otherwise ask your dealer.
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Unread 12-16-2008, 01:37 PM   #4
Double E
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So the engine is not stalling at idle or while driving right? It runs, just not well and intermittently?

Read through these threads for a battery & cable issue that many are finding. These things are super sensitive to not getting the right amount of power (...even when cranked and running) from the battery.
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Unread 12-16-2008, 01:58 PM   #5
Robsho67
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Quote:
Originally Posted by the88thpianoman View Post
Intermittent fuel pump could be the problem. When was the last time it had a general tune up, including fuel filter, which could also be the problem if it is excessively clogged.

It had a tune up about a year ago. (12000 Miles)... I will take it to a local mechanic and have him check out the fuel source... Thank you
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Unread 12-16-2008, 01:59 PM   #6
Robsho67
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Thank you

Quote:
Originally Posted by letsgomuddin View Post
Sounds like a plugged fuel filter or bad fuel pump to me, problem is the pump is in your tank and I think the filter is too. Check your fuel pressure with a gauge attached to your fuel rail. You should be able to find out what it should be in a haynes or chilton book, otherwise ask your dealer.
I will do that.. Thank you
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Unread 12-16-2008, 02:06 PM   #7
Robsho67
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1999 XJ Cherokee 
 
Join Date: Dec 2008
Location: Lincoln, Il
Posts: 7
Quote:
Originally Posted by Double E View Post
So the engine is not stalling at idle or while driving right? It runs, just not well and intermittently?

Read through these threads for a battery & cable issue that many are finding. These things are super sensitive to not getting the right amount of power (...even when cranked and running) from the battery.
It actually runs fine some times.. I was on the way home the other night and was crusing about 65, then all of sudden I had no power.. I was able to make it home, but when I got off the interstate, it acted like is was going to die at each stop light, Actually kept foot on gas, seemed like it was missing. Got it home, Went to bed, got up and it started and ran just fine.. Drove 3 blocks and then it started acting the same like it was going to die. It did not die but was running very rough and had no power....

I'm so glad I found this forum. You all provide great leads and information.

Thank you
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Unread 12-16-2008, 03:52 PM   #8
Robsho67
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1999 XJ Cherokee 
 
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Location: Lincoln, Il
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Codes: P0351, P0352, P0353, P1391

Quote:
Originally Posted by Robsho67 View Post
It actually runs fine some times.. I was on the way home the other night and was crusing about 65, then all of sudden I had no power.. I was able to make it home, but when I got off the interstate, it acted like is was going to die at each stop light, Actually kept foot on gas, seemed like it was missing. Got it home, Went to bed, got up and it started and ran just fine.. Drove 3 blocks and then it started acting the same like it was going to die. It did not die but was running very rough and had no power....

I'm so glad I found this forum. You all provide great leads and information.

Thank you
Gentleman, I just went and started this up.. Runs great for now.. I did the code check and it was giving me these codes.. P0351, P0352, P0353, and P1391. Any assistance would be greatly appreciated. Thanks
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Unread 12-17-2008, 09:01 AM   #9
gpJeep
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check the bloody Coil Rail -- try swaping for a good one

Coil rails are evil they break internally and don't run right at speed

ask me how I know
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Unread 12-17-2008, 09:03 AM   #10
Robsho67
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1999 XJ Cherokee 
 
Join Date: Dec 2008
Location: Lincoln, Il
Posts: 7
Quote:
Originally Posted by gpJeep View Post
check the bloody Coil Rail -- try swaping for a good one

Coil rails are evil they break internally and don't run right at speed

ask me how I know

I will try that.... Thank you
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Unread 12-17-2008, 10:03 AM   #11
gatorayde
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Quote:
Originally Posted by Robsho67 View Post
Gentleman, I just went and started this up.. Runs great for now.. I did the code check and it was giving me these codes.. P0351, P0352, P0353, and P1391. Any assistance would be greatly appreciated. Thanks
P0351/2/3 Are all related to the ignition system malfunctioning click here for the details

P1391 is a bad cam or crank shaft position sensor.

Change out the coil pack and the cam/crank position sensor and you should be good to go
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Unread 12-17-2008, 08:34 PM   #12
Robsho67
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Thanks for your help.
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