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snowmanzz13 06-22-2008 09:32 PM

dead yj?
Okay, to start off with, it has been having this issue recently, the past week, where it will run fine and then when you pull up to a stop light and the idle just kinda idles amd idles off, and dies. It seemed to be running fine and it shut off and it took me 15 minutes of waiting to get it started and i drove home. Sat in the driveway idleing for about 15 minutes without a stutter or anything while looking under the hood for anything out of the ordinary, thinking it was fine, put the hood down and went inside to get my dad so we could go to the store. Well we get in and i release the parking brake and it cut right off. Tried to crank it and nothing, well checked the 3 main things needed to run, fuel spark and compression. Fuel pump was kickin and had 1/2 tank, so spark was next, nothing. Changed the coil, distrubutor cap, rotor, wires and spark plugs. When that was done fired right up. Today we went to go house shopping and ran fine all the way there. Walked in and out around the house, about 1/2 hour 45minutes later we go to leave and nothing, just cranks, let it sit and nothing. Pulled it home and nothing just turns over with no fire. What is my issue? this is killing me as it's my daily driver as apposed to a diesel truck which is too expensive to feed but looks like i will be....

Any help is appreciated

jpdocdave 06-22-2008 09:42 PM

does it still lose spark? check connections at distributor, have you checked for codes?
checking injector pulse would be helpful to, no pulse and no spark is usually crank sensor. check the basics to like fuses, grounds, and connections.

snowmanzz13 06-22-2008 09:46 PM

how would i go about checking the fuel pulse? i havent checked anything since i got home, just pulled it home and let it sit. also codes, how should i go about testing for them?

juanky 06-24-2008 06:05 PM

you might wanna check the fuel pump mine just did that same thing

Grandpa Jeeper 06-25-2008 12:05 AM

What year, which engine, standard or automatic, factory carb and dist or aftermarket?

Give us an idea of what you are driving and it will make it easier to help you.

TJ_Congo 07-12-2008 12:59 PM

You probably already have fixed this but my 98 TJ 4 banger did the same thing last year. Replaced the crank sensor and ran fine for about a year. It is doing the same thing again however it will still start if I wait long enough (5-10 minutes). You can replace the crank sensor yourself if that is it. I think the only two sensors that will totally kill the engine are the (CPS) cam sensor (inside the distributor on my 4 banger) or the (CKP) crank sensor. I still don't know what is up with mine but since I used electrical contact spray to clean all the connectors last week it has been running fine (Knck on Wood!).

Good luck !

snowmanzz13 07-13-2008 01:31 PM

thanks, i had the crank sensor changed and it ran fine no issues, but now i have this issue of when its cold it sputters alot, i have had it where it seems like its fine and put it in gear to go and start to let out on the clutch it just dies basicaly, like it runs out of fuel?

wont start right away but does after a minute or two and once it has been warmed up it will run fine. And a new issue it developed is once its warm, when you are driving, and you push the clutch to come out of gear to slow to a stop and the motor just cuts out, i put it in gear and pop start it and starts right up no issues. But this isnt once in a while, its everytime i come to a stop light, checked fuel pressure and at idle its at 50psi and when at about 2500 its at 40psi any ideas?

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