p0456

Any thoughts on this? This morning it was a chilly 31 degrees here in Chandler, AZ. My jeep is not a fan of cold weather and neither am I. Anyway, I started it up and let it warm up to about 150 before backing out of the driveway and heading out to run some errands. As soon as I turned on the...

New member, old Jeeper. I have been perusing the threads here and have found bits and pieces of information but nothing seems to really hit on my problem. Any advice would be appreciated. 2004 TJ X w/150k on the clock. Currently on my 4th fuel pump. OE died at 115k. Replaced with DFG1221 @...

04 I6 TJ Sport Over the last several months I’ve had the check engine light come and go. The light is turns off about every third time I fill up with gas, then randomly will come on one morning as I’m driving to work with the P0456. I noticed this usually happens when the gas tank is below 1/2...

Lately I have been having some issues with my Jeep 02 4.0 5 Speed. Randomly it will have a rough cold start (2-3 cranks) and each time it fails to start up I get P0320 and P0340 codes. I was wondering what this could be, maybe coil pack, sensors (wires look fine). I also have been getting the...