1997 Infiniti QX4 Overheating

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jcnunez
Posts: 9
Joined: Sat May 19, 2007 10:31 am

Post

On hot days if I turn on the AC my SUV begins to overheat. Once I turn off the AC it returns to normal temp. This only occurs when the temp is 90 to 100 degrees and the car is idle.

I replaced radiator fluid, water pump, thermostat, fan clutch/blade and hoses. I noticed no leaks in the radiator. Could there be a clogged chamber in the radiator? What else is there to check or replace?


Q45tech
Moderator
Posts: 14296
Joined: Tue Apr 30, 2002 3:19 am
Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl

Post

Check speed of auxillary electric condenser fans that come on with AC.Check rad for bent fins and corrosion.............10 years is usually the life of oem rad, also any rubber foam air seals around rad.

Dirt. leaves, hair, animal parts between condenser and rad

The usual fix is rad replacement and other air flow items to make it like new.


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