AZSnake98

Thanks for the help brother. Ill get it rewired and post results.

BadHabitXJ

My 01 has an issue similar to that, starts and runs fine but once it heats up and I turn it off, I crank it back up again and it sputters for a while til it gets going. It's cause of te heat soaked injectors. A heat wrap around the injectors or the heat shield kit you can buy can help with that. It sounds like to me that that's causing your issues. If anything I would try that and see what it does

kaz2000xjsport

When I had the heatsoaked injector problem I never had starting issues. It would backfire, sputter and die and then start right up as if nothing had happened. Until it happened the next time.

awweaver

I'm having the same problem with my 00 xj. Scanner said it was the Cam sensor. Replaced it and still the same problem.

AZSnake98

Ok guys im gonna buy some heat shield stuff and do that as well. I will post results when im done.

awweaver

I'm gonna try the same tomarrow. Hopefully it fixes the problem. (but I have my doubts) maybe it will stop my from spending more money.

AZSnake98

Ok I wrapped the entire fuel rail and all injectors with 2000 degree aluminum heat tape.

Took all the connectors out of the harness to the CPS. And the problem is better, but still happening. I even held the rev's at 2000 and it stayed for a while then stuttered and nearly died. I didnt hardwire it because, well, for one, I don't own a soldering gun and 2, the wires from the sensor to the clip are all one wire together... so how do I know which part of that wire to solder to which wire running up the main harness??

Any help would be appreciated. Thanks.

pete322

I had similar prob/symptoms you are having. It was not throwing any codes, I tried cleaning idle air sensor, changed throttle position sensor. finally took my mechanics advice and changed O2 sensors, Bam problem solved!!! don't remember which one it was the, forward or rear one that was the problem I changed both and it ran like a top.

Hope it helps you out

AZSnake98

Thats wierd because while I was under there I noticed that the front 02 sensor wires were bare so I hit those with a nice amount of elec tape as well. The wires that are bare are the ones going to the main harness though... how would I remedy this?

AZSnake98

Can I just cut the wires and use male/female electrical connectors?? From my research is seems these sensors are too sensitive for that.

AZSnake98

Just went out bought a solder gun, deleted the clips and soldered in the CPS... Jeep drove great on my test drive. Pull into my drive way and let it idle for a minute... Sputters once... then dies. Start it back up FLAWLESSLY on the first crank.. runs for 30 seconds... sputters and dies...

Someone help me please. as I am at my wits end with this damned thing.

Lets recap...

New TPS
New IAC valve
Soldered in the CPS
Heat wrapped ENTIRE fuel rail and ALL injectors with 2000 degree heat tape.

The only other things suggested/i can think of are:

02 sensors. I can just unplug them and go drive and if its the 02 sensors failing it shouldn't die on me right?

Cam position sensor? Possibly?

Fuel pump / filter.

pete322

#1 does it run fine after it's warmed up and been running for a while? #2 if you drive some where and turn it off and restart with 30 min (this is at 70*-80* OAT) does it still run fine?If yes, I'm staying firm with my O2 sensor diag.I don't believe you can diy delete the O2 sensor and have it operate properly. I know it sucks throwing parts at a prob but if your in the same boat I was and its not giving you a CEL or diag codes not much other choice.Best of luck man

Harky1949

I chased this problem for weeks!
My 96 started cutting out after +/- 10 mins of driving... I couldn't maintain highway speed with the pedal to the metal. It bucked and ran like s**t.
I replaced many "topside" sensors: MAP, TPS, CPS, CTS... with no improvement.
Turned out to be an O2 sensor!
I replaced the fairly new Bosch sensors (2) with new Japanese OEM sensors (I forget the brand), and it runs fine now.
It has something to do with open loop fuel control during warm-up that switches to closed loop control using the O2 signal.
FWIW.

AZSnake98

Looks like i will be trying this next... 4-5 people on this board and others have said 02 sensors... ffs...


If that's all it is and Ive dumped all this money and time into it I'm gonna be pissed. haha.


EDIT: ordered upstream and downstream OE oxygen sensors 5 minutes ago... 2-3days and we will see if that was also a waste of money and time. lol.

Thanks for all the help, guys, I really appreciate it.

EdZ

Now that you it appears to have the stalling more often, can you get a fuel pressure reading when the issue is occurring ??? Not real sure on the jeep config, nut with most engines I have worked on they will run OK with the O2 sensors out of limits but will produce very poor fuel mileage... If you could hook up a fuel pressure tester and check it while the problem is occurring, then you could rule out the fuel pump/regulator... There had to be an out of limit condition somewhere... Be it fuel or electrical, I would think the computer should be able to identify it... Ya might have to have a scan tool plugged in while the engine is having the issue to find it though (if it's not something that gets stored as a fault)...