When I first got the car the AC blew cold regardless of conditions. But recently when I sit at idle or come to a stop in traffic it will start to blow warm. The ambient temperatures when it overheats are anywhere between 65-90 degrees. It blows cold when I’m driving which makes me think it has plenty of refrigerant. I already burped the coolant system and it didn’t help. One of the times it overheated the fans weren’t turning on. I’m lost as to what the problem could be so any help is appreciated!
A/C warm at idle, engine overheats
- Thread starter Oliver
- Start date
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If the engine is overheating then that is the first place to look. You might have a waterpump going bad or possibly a bad temp sensor not kicking the fans on. Figure out the over heating and you will more than likely solve the AC.
Check your condenser. You might have dirt, leaves, gunk, etc... blocking the fins. If so, try reverse rinsing it with a garden hose.
After that, it might come down just having a weak compressor.
Check your condenser. You might have dirt, leaves, gunk, etc... blocking the fins. If so, try reverse rinsing it with a garden hose.
After that, it might come down just having a weak compressor.
Fans if warm at idle but cold at speeds increase, esp over 40 mph or so. A/C refrigerant levels also come into play, but it is typically the fans at fault. The primary fan cools the engine, the secondary comes on to assist when A/C is called upon. They do not last like they did on earlier Gen SHOs.
6500rpm
Quality Always Shoots Straight
SHOdded for the win. Bad coolant fan, fan relay, or fan circuit issue. Not many Taurus in the fleet a few years ago, but coolant fans were a common failure on the Explorer and Flex.
Johnbigdog
SHO Member
I'll third the cooling fan system.
The a/c system has to have air flow to remove heat from the condenser to condense the refrigerant. (Steam to condensate) That air also has to cool the radiator, or more correct, it has to remove heat from the radiator. No air flow = no cooling. No cooling = overheating.
The simple solution, drive fast and don't come to a stop unless you have to park the car.
The a/c system has to have air flow to remove heat from the condenser to condense the refrigerant. (Steam to condensate) That air also has to cool the radiator, or more correct, it has to remove heat from the radiator. No air flow = no cooling. No cooling = overheating.
The simple solution, drive fast and don't come to a stop unless you have to park the car.
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