Question about 2004 Nissan XTerra

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My 04' over heating when idoling and ac is on

My 04' is over heating when idoling and ac is on had the radiator power flushed thermastat changed, water pump is working ...what going on ? could my belts be doing this ?

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Fixed problem HERE........................


We changed thermostat, belts, water pump, hoses... you name it we changed it nothing worked. Just before we ordered a new radiator I took a few pics sent them to my dad and instantly he said to remove the bleeder bolt then fill radiator. That's it guys months of overheating a lot of money and hours of work when in the end it was so simple, cost nothing and took 2 mins.


Turns out most the Nissan motors have a type of bleeder bolt or something (not sure what its called exactly) on top of the motor and that should be removed while filling radiator. step 1 wait till engine is cooled down all the way. step 2 remove radiator cap. step 3 remove the bleeder bolt on top of motor (look around for it. Its just a little old bolt all alone) step 4 slowly fill radiator until coolant/water to come out of the bleeder hole. step 5 put bleeder bolt back in. step 6 put radiator cap back on. That's it. Good luck



if you do not do these steps air get caught in the system and when heated turns to steam. and your radiator cant circulate that steam because the hot air raises. The steam will just sit at the top of the motor and block the coolant/water from circulating through the radiator like it should. Without it passing through the radiator correctly it will not cool. Having a new radiator helps because when they installed it they probably filled it correctly (by removing that bleeder bolt). They knew they could have just filled the old one correctly but there isn't any $$$money$$$ in that for them. my 04' over heating when idoling and ac is on - trimble7383_0.jpg

Posted on May 26, 2011

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My Xterra did the same exact thing. The dealership replaced the radiator & gasket

Posted on Jun 16, 2009

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It sounds like your radiator fan is not kicking in. i would check the fuse and relay and then if that is not it then I would troubleshoot the circuit

Posted on Jun 15, 2009

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Posted on Jan 02, 2017

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