Engine temp creeps with a/c
#3
#4
Could be the fan clutch OR the radiator...
When you're sitting at idle, and your truck is beginning to overheat just over the normal temp, give it a touch of gas. Do you hear the fan clutch kick in nice and loud?
Get or borrow one of those laser thermometer guns, and use it to check the radiator for cold spots from left to right. If there are cold spots, then the flow of coolant is restricted in those areas, which could also cause the viscous fan clutch to not engage fully. Keep in mind, the viscous fan clutch relies on hot air from the radiator to engage.
-JT
When you're sitting at idle, and your truck is beginning to overheat just over the normal temp, give it a touch of gas. Do you hear the fan clutch kick in nice and loud?
Get or borrow one of those laser thermometer guns, and use it to check the radiator for cold spots from left to right. If there are cold spots, then the flow of coolant is restricted in those areas, which could also cause the viscous fan clutch to not engage fully. Keep in mind, the viscous fan clutch relies on hot air from the radiator to engage.
-JT
Last edited by JSTMoto; 08-19-2011 at 03:07 AM.