My 2000 wrangler 4.0 is overheating when driving. It will get right up to the red line on the gauge and whenever I come to a stop it drops back down to normal. The whole cooling system is new. I’ve taken it to two shops and they also can’t figure it out. Any suggestions? Thanks!
Overheating issue
- Thread starter Weldon2005
- Start date
Here's the guide for how to do it right:
https://wranglertjforum.com/threads/jeep-wrangler-tj-cooling-system-overhaul-faq.3397/
Question simply is how have you deviated from that established recipe. Different parts? Need a flush? Could be a head gasket and none of that is relevant.
-Mac
https://wranglertjforum.com/threads/jeep-wrangler-tj-cooling-system-overhaul-faq.3397/
Question simply is how have you deviated from that established recipe. Different parts? Need a flush? Could be a head gasket and none of that is relevant.
-Mac
JKP
TJ Addict
Unless it's been replaced, you have the head casting that's known to crack. Look down the oil fill hole and see if you see coolant bubbling out.
If you see TUPY, it's the later, good casting.
If you see TUPY, it's the later, good casting.
Thanks guys! Yes, the water pump is mopar. The head has not been replaced, I’ll check there next. Had a block test done and there were no exhaust gasses found so I kinda eliminated the head gasket being the problem.
I had a very strange problem in a car I had, not a TJ and I don't know if it can happen, it's just a clue that might help. There were no exhaust gases or any clues detected but it had a broken head gasket. I hope that's not your case. That car traumatized me.
Does he always have this behavior? Even if you let it cool for a whole day? The next day you can open the radiator and there is no pressure?