Still running hot after several trys

LILJR1950

MEMBER
1998 CHEVROLET MALIBU
6 CYL
2WD
AUTOMATIC
203,400 MILES

I've asked several Questions about my malibu running hot now I've noticed that when my air conditioner is on the fan comes on realy fast. But when it not on it comes on slower and it runs hot.

Saturday, May 21st, 2011 AT 2:43 AM

3 Replies

FACTORYJACK

MECHANIC
4,159 POSTS

It is normal for the fans to come on when the A/C is on, to maintain airflow across the condenser, for efficient A/C operation. Describe more on the overheat, more specifically the conditions on which it gets hot. Does it happen relatively quickly, when idling or moving, does the hot light come on, and what has been done in an effort to diagnose?

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Saturday, May 21st, 2011 AT 3:26 AM

LILJR1950

MEMBER
3 POSTS

I've noticed that when my car is idling the fans comes on later and when they do come on they run slower and the car runs hotter. But when I turn on the air they come on faster and the car runs cooler.I've replaced the thermostate and the heat sensor on the motor and the fans but it still runs hotter

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Monday, May 23rd, 2011 AT 11:53 PM

FACTORYJACK

MECHANIC
4,159 POSTS

The question is, does it overheat? Is it just a perception that it is running hotter, and what is it based upon? It sounds like the fans are functional, and may be operating normally. Does the temperature drift around the mid point of the temp gauge, cooler with the fans on of course? It would almost be advised to install a scan tool and compare what the ECM coolant temperature is, versus the gauge. If the scan tool is reading coolant temp data around the 214 to 224 degree range, it is operating normally.

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Wednesday, May 25th, 2011 AT 5:05 AM