Need help

TuryV

New Member
Original poster
Joined
Dec 29, 2020
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14
Location
Yuma AZ.
This will be a long post so I apologize in advance. My tj left me stranded on the road. All the signs point to the fuel pump going out. So it's been running rough at idle, I did the throttle body cleaning as recommended by Jerry on an older post. It started back firing and stalling after that I ran it for a little while and it started running well so I figured the fluid ran through the system and that was that. The next day I washed it both out and and engine bay like I done some many other times before. And again it had problems getting it to run it stalled, backed fired and ran rough until i forced it to run well. I went out for a ride with the fam and it died on me. I would not start i had to pushed out of the way and had towed home. When it died it crank well it just would not start at all. It was had so I could not really try to check it. Today, the next day. It started right up. I did not ride it for fear it would died again. I thought it was the fuel pump at first and I still think it is. But maybe something got wet when I washed the engine or even vapor locked. The fuel pressure regulator did not work well and I do have a vapor leak so the fuel tank had to come down anyways. So any thoughts and advice would be much appreciated. Thank you.

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Nice looking Jeep and great color.

Dying on the road and restarting when cooled down can be a symptom of a crankshaft position sensor on it's way out. One way to check is to cool it off with a bottle of water after it stalls. Do you have the fuel test port on the fuel rail.
 
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Nice looking Jeep and great color.

Dying on the road and restarting when cooled down can be a symptom of a crankshaft position sensor on it's way out. One way to check is to cool it off with a bottle of water after it stalls. Do you have the fuel test port on the fuel rail.

Thanks. I just had doll it up from a weekend of desert riding to go out with the fam. I've thinking in replacing both TPS and AIC sensors but the jeep always ran very well it is lately that started to do the rough idle ( by the way that got much better after cleaning the throttle body) heat never bother it I live in Yuma AZ. is hot almost always. I did had some codes do to the vapor leak I have from the gas tank. it really struggled to start back up and stay running after the engine bay degreasing and wash.

info
2001 TJ, 4.0, auto 3 speed, 110k, all stock all mopar so far other than lift.