Jeep Wrangler Forum banner

1 - 4 of 4 Posts

·
Registered
Joined
·
12 Posts
Discussion Starter #1
So I'm about ready to kick this Jeep to the curb. It's extremely frustrating as it's in great shape and really clean. Jeep only has about 70k miles on it, but it sat for several years prior to us buying it.

Since we've owned it, it seems like after an hour plus drive, it runs out of fuel. Around town, and up to that hour driving, it runs great. It happened yesterday. I could get it to start, but any attempt to accelerate was unsuccessful. I left to grab my scanner and went back to get it about 2 hours later. When I got there, it started and ran fine. I did notice there was some pressure in the tank when I removed the gas cap.

We've had (2) EVAP codes since we've had it, and both are "circuit" issue codes. P0443 and P0499. I've tested resistance and from what I can tell the wiring is all intact. I've also pulled the purge valve and manually actuated it with an outside 12v source. It opened as it should. The P0443 will clear with a cheap scanner, but the P0499 will not. My thought was to maybe drop the fuel tank and pull the EVAP canister to make sure all of the lines were in good shape.

PCM was replaced a couple months ago too. I really hope it's not the PCM as they are hard to find and no one really seems to have good reviews. I had a local shop replace it.
 

·
Registered
Joined
·
13,760 Posts
Sounds like failing fuel pump
If so will become more and more frequent and ultimately quit all together
A fuel pressure reading when having issues would nail it down

Would be a shame to loose a Jeep over something that minor

The new ethanol added gas we are forced to buy at most stations leads to more internal corrosion when vehicle sits for months or years


Sent from my iPhone using Tapatalk
 

·
Registered
Joined
·
12 Posts
Discussion Starter #3
Thanks. I have a gauge/quick connect fitting kit coming today that will allow me to check the fuel pressure. Hopefully, it will give me some answers.
 

·
Registered
Joined
·
12 Posts
Discussion Starter #4
Well, fuel pressure is dead nuts at 58 psi and I let it run for a good 30 minutes with the AC on high. No fluctuation. I also looked at the purge valve under the engine bay and it’s not opening up. Not sure if that would have any affect on the fuel delivery over an extended amount of time.
 
1 - 4 of 4 Posts
Top