2001 xj issues

[sinkrun]

I was not driving it the wife was and she told me check engine light was flashing and was missing or loss of power drove it six miles home. I checked the codes got a po3006 missfire. Next day I ran it about 45 mins and it ran fine neighbor who followed me said its putting out black smoke when I pull out or step on it. 

 

Around 140,000 miles on motor 85,000 on body 4.0 auto. Head was replaced so I was told and no cooant loss with clean oil in the crank case. It is starting to use more oil than I care for eninge was out of a built mud truck.

 

I have had some serious heath issues and can't do much or have much money right now so I am looking for ideas without throwing money at it. Three weeks in the hospitial and going back in soon. I have done some searching with no definite answers.

[64 Cheyenne]

I was not driving it the wife was and she told me check engine light was flashing and was missing or loss of power drove it six miles home. I checked the codes got a po3006 missfire. Next day I ran it about 45 mins and it ran fine neighbor who followed me said its putting out black smoke when I pull out or step on it. 

 

Around 140,000 miles on motor 85,000 on body 4.0 auto. Head was replaced so I was told and no cooant loss with clean oil in the crank case. It is starting to use more oil than I care for eninge was out of a built mud truck.

 

I have had some serious heath issues and can't do much or have much money right now so I am looking for ideas without throwing money at it. Three weeks in the hospitial and going back in soon. I have done some searching with no definite answers.

 

You know, me and the woman had a discussion about this, she drove #5 (97 XJ) till the engine shut down trying to make it home (another 10mi), warped head no or low compression #3, engine toast....well head gasket at the least, and possibly the head if its cracked.

Gauges and flashing lights mean something....not that it can go another ten miles or in her case six.

Sounds like you gettin too much fuel, suggest you look at the MAP sensor on the TB, be sure it's hooked up proper, and have you done O² sensors lately? or ever?

[Akula69]

I had a misfire code on the XJ (and on two of the WJ's that we own) and hunted that gremlin for a while. In desperation I actually replaced the top of engine injector harness and while looking at the old one noticed the loom had partially melted where the harness went around the back of the valve cover. Peeling the loom back exposed several of the injector wires whose insulation had melted and they would occasionally short (throwing the code and causing rough running). Since then, whenever I buy an 99-04 XJ of WJ I always place some loom insulation around the harness at that point (I get it in a 36" piece from JEGS). 

 

Addressing the oil consumption, the mileage and prior use of that replacement engine would make me wonder if it could use a quick ring and bearing job - but I would check compression first to see just how bad it may (or may not) be. 

[teamsmith]

Have you tested the coil packs by pulling off the boot and turning the key? 

 

[sinkrun]

Have you tested the coil packs by pulling off the boot and turning the key? 

 

Thanks I didnt find that when searching great idea.

[sinkrun]

 

I was not driving it the wife was and she told me check engine light was flashing and was missing or loss of power drove it six miles home. I checked the codes got a po3006 missfire. Next day I ran it about 45 mins and it ran fine neighbor who followed me said its putting out black smoke when I pull out or step on it. 

 

Around 140,000 miles on motor 85,000 on body 4.0 auto. Head was replaced so I was told and no cooant loss with clean oil in the crank case. It is starting to use more oil than I care for eninge was out of a built mud truck.

 

I have had some serious heath issues and can't do much or have much money right now so I am looking for ideas without throwing money at it. Three weeks in the hospitial and going back in soon. I have done some searching with no definite answers.

 

You know, me and the woman had a discussion about this, she drove #5 (97 XJ) till the engine shut down trying to make it home (another 10mi), warped head no or low compression #3, engine toast....well head gasket at the least, and possibly the head if its cracked.

Gauges and flashing lights mean something....not that it can go another ten miles or in her case six.

Sounds like you gettin too much fuel, suggest you look at the MAP sensor on the TB, be sure it's hooked up proper, and have you done O² sensors lately? or ever?

 

No never put a 02 and will check the map.