TJ dies when hot

[Turdworlder]

I studied all previous threads with almost same problems. Iac,cps,tps sensors. My jeep has weird some hidden electronic issue. As i posted before 32rh didnt want to shift but after whole throttle body cleaning and battery remove for 1 whole day transmission came back. My ecu has some 1-2 cut naked wires(not completely but wounds from pulling battery out). The problem was there even 3-5 years ago. But it would happen only twice a year with winter season beginning. But nowadays i am having it constantly. It vibrates, tachometer goes to almost zero, sometimes dies when i am in complete traffic jam and cant add gas. It only happens only when engine reaches 98-100 C temps. Sometimes it dies even when i let off the gas when climbing uphill when car ahead me decides to stop. Could it be the ecu connection problem or its sensor related. 3x times key play shows only park neutral sensor problem.

 

[Turdworlder]

Yes, also the problem starts only with cold winter coming. Even in hot 40+c i didnt have this problem.

 

[Goatman]

98-100 C is boiling! You should never get near to those temps. So if you aren't truly getting to that point I would look at replacing the coolant sensor. If you are getting to that temp then STOP and get your cooling system fixed. I would think your computer is hitting limp mode and shutting down before permanent damage.

 

[Chris]

I agree with the above ^

 

[dbbd1]

Doesn't coolant raise the effective boiling point of your coolant mixture?


I would get a can of "freeze spray" or a can of compressed air (if you turn the can upside down, you get cold compressed air because of the propellant). Start spraying various sensors and injectors to cool them down, then see if it runs better.

 

[dbbd1]

Like this...

https://www.amazon.com/dp/B0047Y9DKS/?tag=wranglerorg-20

 

[bromel]

Our 4.0s always run at 210, which is just about 100*C. Why are we freaking out that his engine is running at that temperature?

 

[dbbd1]

Our 4.0s always run at 210, which is just about 100*C. Why are we freaking out that his engine is running at that temperature?

Nope, not me.

 

[Turdworlder]

I changed whole benzine pump unit, it gives normal pressure of benzin under hood. So i dont have any ideas left. After throttle cleaning it drives okay for 3-4 days, then this glitch starts again.

 

[Turdworlder]

When my engine is freshly hot 98-100c it becomes very silent. I had couple of accidents when engines was so silent i cranked the enine thinking i shut off the car. I like it when it runs hot, very good fuel consumption when hot.

 

[Turdworlder]

Could it be vapour lock or aomething like that? I dont know what are the symptoms of it, but i know it happens onky with hot engine. I removed hood heat insulation.