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Starts and dies

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Old Mar 29, 2013 | 09:17 PM
  #1  
still muddin1982's Avatar
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From: dayton
Year: 1992
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Engine: 4.0
Default Starts and dies

My jeep started running fine after two weeks of trying to fix. Now it finally starts then dies seconds later. Please help
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Old Mar 29, 2013 | 09:40 PM
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From: Franksville, Wi
Year: 1995
Model: Cherokee
Engine: 4.0
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Originally Posted by still muddin1982
My jeep started running fine after two weeks of trying to fix. Now it finally starts then dies seconds later. Please help
The amount of information that you have given is incredible and you should have answers solving your exact problem within seconds.

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Old Mar 29, 2013 | 09:45 PM
  #3  
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Model: Cherokee
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Originally Posted by XJriot
you should have answers solving your exact problem within seconds.:
1) Remove failed part.
2) Replace.
Done!


What was the original problem? What have you done so far to try to fix it?
Does it start normally (not struggling to fire)? When it dies is it immediately after releasing the key from 'start'? A second or two later? Any CEL or codes set?
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Old Mar 29, 2013 | 09:47 PM
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That Jeep Guy XJMJ's Avatar
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Year: 1987 MJ, 1973 J2000, 1986 XJ, 08 JK
Model: Comanche (MJ)
Engine: 4.0L H.O
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sounds like a Crank Position Sensor.... enough info there for me to suggest something to look into
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Old Mar 29, 2013 | 10:07 PM
  #5  
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From: dayton
Year: 1992
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Sorry. Two weeks ago it dies and wouldn't even try to fire. So I changed cps coil rotor and cap plugs alt batt. All to still no firing. Sent it to a shop. They said the timing was off 180 I prob fixed it with the cps. But had flooded it and that's y it didn't start then I changed everything else I mentioned. I just had the cap on backwards. Got the jeep back today. Been running foot all day. Little hesitant taking off from idle. Then was driving home and it just died. Now it will start but will die like two seconds later If I'm giving it gas it will rev up but then still dies a few seconds later
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Old Mar 29, 2013 | 10:10 PM
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Does it run as long as you feather the gas? If so, check the IAC for a starting point.
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Old Mar 30, 2013 | 01:35 AM
  #7  
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From: Marion, Va
Year: 1992
Model: Cherokee
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this sounds exactly like mine.. pretty much everything is new, except for the map sensor, and it's like it's just not gettin fuel. i have no way too get it too a shop, so.. .if anybody could help.. has new cps, fuel pump, rotor button, plugs, wires, dist, changed the map sensor but done the same thing.. and it happened after being down for about 2 months, then runnin strong again, but it just stopped one nite. and it does back fire, like pops all the way back too the intake box.. nebody have ne idea??
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Old Mar 30, 2013 | 02:19 AM
  #8  
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From: Broward County Fl.
Year: 1989 xj sport 2dr
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Engine: 12 hole bosch Injectors
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Any codes ?
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Old Mar 30, 2013 | 06:28 AM
  #9  
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From: Ocean, New Jersey
Year: 2000
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Remove and replace all moving parts. If that did not fix the issue, remove and replace all non-moving parts. If that did not fix the issue, repeat the process until it is fixed.
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Old Mar 30, 2013 | 07:13 AM
  #10  
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From: dayton
Year: 1992
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No it don't have any codes. And feathering the gas just gets it a higher rpm before it dies I've got it to run for like 3-4 seconds tops
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Old Mar 30, 2013 | 02:07 PM
  #11  
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From: Marion, Va
Year: 1992
Model: Cherokee
Engine: 4.0
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no.. no codes, and no check engine light... and what muddin said... i can rev it, and it still just dies after a short bit
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Old Mar 30, 2013 | 06:50 PM
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Originally Posted by still muddin1982
feathering the gas just gets it a higher rpm before it dies I've got it to run for like 3-4 seconds tops
Gotcha. Does it re-start immediately if you try? Sure sounds like a fuel delivery problem. A fuel pressure gauge might be interesting, see what happens when it dies.
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Old Mar 30, 2013 | 07:22 PM
  #13  
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From: SW Ohio
Year: 1988
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Engine: 4.0
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Originally Posted by Radi
Gotcha. Does it re-start immediately if you try? Sure sounds like a fuel delivery problem. A fuel pressure gauge might be interesting, see what happens when it dies.
+1, get a cheapo fuel pressure gauge and see what it tells you.
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Old Mar 30, 2013 | 10:10 PM
  #14  
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From: Bakersfield CA
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
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MAP?
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Old Mar 31, 2013 | 08:19 AM
  #15  
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From: dayton
Year: 1992
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I was also told could be a clogged filter. And yes it will start every time I try to start it
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