Question about 1995 Saturn Sc
You may want to check on the radiator fan. The AC has its own fan and once AC is on, the fan would help bring down the temperature. It is either the fan is not blowing or has become weak. You can check on the fan by pulling out the temp sensor on the lower radiator hose. The fan should blow at full speed when doing this.
Check on the water reserve the water inside it goes down, if not there may be a leak somewhere. Water vapor may be escaping and lessening the effectiveness of the cooling system. This may be a reason why the engine cools down after the AC fan is on.
Posted on Jun 16, 2009
You know your engine is cooled by conventional air(ie atmospheric air when the vehicle is on motion and forced darugth air produced by the fan which dissipates heat by blowing the radiator) Have your engine cooling fan examined, it may not be functioning properly or it may not be working at all. When you put on the A/C the ac blower helps induce forced darught air into your engine.
Posted on Jan 19, 2013
First guy has it right wanted to mention to check the radiator when cold and have the cap pressuere tested, a leakey cap will cause it to overheat.
Posted on Jun 26, 2009
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Posted on Jan 02, 2017
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