Overheating

CONTRERASJULIOANGEL

MEMBER
2007 NISSAN PATHFINDER
6 CYL
2WD
AUTOMATIC
153,000 MILES

Car overheats within two blocks gets completely boiling hot. I've used a whole bottle of bars at leak and a whole bottle of Blue devil head gasket sealer one day after the other and it's still overheating the same exact way. Radiator is good but I am able to grab the fan with my hand when it is running. I was told the fan clutch maybe. Then also the thermostat was messed up so it's not even in there anymore.

1 Reply

ASEMASTER6371

MECHANIC
52,797 POSTS

Good morning,

All those additives have no effect on overheating. They do not do what they are supposed to do.

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

I would pressure test the system first. You can rent the tester at a parts store.

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

Did you change the thermostat? I would also do that as it may be stuck closed.

https://www.2carpros.com/articles/replace-thermostat

You adding all those additives has most likely clogged the radiator cores. That is about the only thing those additives do. You may have a clogged radiator as well.

https://www.2carpros.com/articles/how-to-replace-a-car-radiator

Lastly is a head gasket from constant overheating they may have failed. There is no additive made that will seal up the head gasket. The only correct repair is to replace the head gaskets.

https://www.2carpros.com/articles/head-gasket-blown-test

Roy

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