Overheating

2002NISSAN2002

MEMBER
2002 NISSAN XTERRA
3.3L
V6
4WD
MANUAL
256,000 MILES

Coolant leaks into resolver, but does not recirculate back into the radiator. It would just overflow the resolver container. I had change the thermostat and coolant. Problem still persist. What can it be? Do I need new radiator or the water could be bad?

Tuesday, August 13th, 2019 AT 6:16 AM

3 Replies

ASEMASTER6371

MECHANIC
52,796 POSTS

Good morning,

I would start by replacing the radiator cap. One of the valves in the cap may be bad.

https://www.2carpros.com/articles/engine-overheating-or-running-hot

Roy

Was this

answer

helpful?

Yes

No

Tuesday, August 13th, 2019 AT 6:50 AM

2002NISSAN2002

MEMBER
2 POSTS

I replace new cap and radiator and I still have the same problem. The coolant would drain into the reserve reservoir, but would not drain back into the radiator, and I would have to keep refilling. Any thoughts what else it could be?

Was this

answer

helpful?

Yes

No

Wednesday, November 13th, 2019 AT 10:19 AM

ASEMASTER6371

MECHANIC
52,796 POSTS

Okay, you need to pressure test the system. The only way the cap will recover the coolant is if the system is in a vacuum. If it has a leak, there is no vacuum.

You can rent a pressure tester at a parts store.

https://www.2carpros.com/articles/radiator-pressure-test

Roy

Was this

answer

helpful?

Yes

No

Wednesday, November 13th, 2019 AT 3:41 PM