2000 Nissan Maxima Tempreature rise when with on

2000 NISSAN MAXIMA
380,000 MILES
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ADI1991
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I got a problem with my maxima
Maxima 2000

Car tempreature rise with a/c on mostly on highway
When the car is running above 100 km for almost 1 hour
Car runs perfectly without a/c

Head gasket , fans and radiator already changed.

Fed up of this problem.

Please help
Jul 6, 2013 at 1:00 PM
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CJ MEDEVAC
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CAN YOU VERIFY THE FAN(S) ARE WORKING?

RUNNING 50/50-----70/30------COOLANT/WATER RATIO?....IN A CLEAN (FLUSHED) SYSTEM?

I MEAN, THE RATIO MIXED OUTSIDE OF THE CAR AND POURED IN.......NOT JUST POUR IN COOLANT AND THEN ADD WATER WITH NO IDEA WHAT THE RATIO FINALLY COMES OUT TO BE

I CHANGE MY THERMOSTATS ONCE A YEAR NEED IT OR NOT (MY PERSONAL PREFERENCE)----BOTH OF MY JEEPS HAVE NOW HAD 22 'STATS, SINCE I GOT 'EM IN 1991

IT MAY BE NORMAL TO HAVE A SLIGHT RISE IN TEMP-----IS IT WAY UP THERE?

THE TEMPERATURE SENDING UNIT MAY ALSO NOT BE READING EXACT....COULD BE DEFECTIVE

I USE AN INFRARED THERMOMETER TO CHECK THE TEMP OF MY WATER OUTLET(THIS TEMP SHOULD BE CLOSE TO THE THERMOSTAT'S TEMP RATING)---TOP RADIATOR HOSE---TOP OF THE RADIATOR---MIDDLE OF THE RADIATOR----BOTTOM OUTLET OF THE RADIATOR-----TO SEE WHAT THE TEMPERATURE IS "AS IT LEAVES THE MOTOR"---"ALONG THE WAY", AND "WHEN IT RETURNS"

I COMPARED MY GUN W/ MY FRIENDS EXPENSIVE ONE-----THEY SEEM TO READ CLOSE-----MINE CAME FROM "AUTOZONE" AND WAS A LITTLE MORE THAN $30.........IT AIN'T GOTTA PASS THE NATIONAL BUREAU OF STANDARDS STANDARDS FOR THIS TESTING !!!!

MIGHT BE TIME TO TREAT IT TO A NEW RADIATOR CAP

THE MEDIC


Jul 6, 2013 at 5:26 PM
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CJ MEDEVAC
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ABOVE

RUNNING 50/50......OR.......70/30...........COOLANT/WATER RATIO?....IN A CLEAN (FLUSHED) SYSTEM?

SORTA DIDN'T SPACE OUT LIKE I WROTE IT

THE MEDIC
Jul 6, 2013 at 5:28 PM
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