Overheating 91XLT

SteveC · 09-05-1999, 04:48 PM

I live in Phoenix and when the weather began to heat up I turned on the A/C and the gauge shot to the "L". When I turned off the A/C it cooled right down. Since that time I have changed 3 thermostats, one fan clutch, one temp sensor, one radiator, one water pump and two radiator caps. I use a 195 degree thermostat. I have also "bled" the radiator from infor on this site. With the A/C on the gauge never goes above the L. Since it doesn't heat up without the A/C on, could it be possible the original A/C unit is putting too much drag on the engine? I am suspicious of the A/C unit because it shuts down when the temp gauge goes above the A.

[This message has been edited by SteveC (edited 09-05-1999).]

LukeDog3D · 09-06-1999, 10:00 AM

Mine was doing that but when I got a new fan
clutch it ran really cool with or without the
a/c on. Try checking the fan clutch again.
Also maybe check the fan blade.

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09-05-1999, 04:48 PM	#1
SteveC Wannabe Elite Explorer Join Date: Sep 1999 Posts: 3 Vehicle Specs (Original Poster)	I live in Phoenix and when the weather began to heat up I turned on the A/C and the gauge shot to the "L". When I turned off the A/C it cooled right down. Since that time I have changed 3 thermostats, one fan clutch, one temp sensor, one radiator, one water pump and two radiator caps. I use a 195 degree thermostat. I have also "bled" the radiator from infor on this site. With the A/C on the gauge never goes above the L. Since it doesn't heat up without the A/C on, could it be possible the original A/C unit is putting too much drag on the engine? I am suspicious of the A/C unit because it shuts down when the temp gauge goes above the A. [This message has been edited by SteveC (edited 09-05-1999).]

09-06-1999, 10:00 AM	#2
LukeDog3D Wannabe Elite Explorer Lafayette, Louisiana '92 Sport Join Date: Sep 1999 Posts: 534 Vehicle Specs	Mine was doing that but when I got a new fan clutch it ran really cool with or without the a/c on. Try checking the fan clutch again. Also maybe check the fan blade.