A/C Fan...
DaChevyClassic
05-03-2010, 05:17 PM
94 Chevy Caprice...When I turn mi a/c on, jus one fan cum on...but when i idle it up the other fan kick on...i thought both fan suppose 2 run at the same time...Iz this normal???
j cAT
05-03-2010, 08:23 PM
94 Chevy Caprice...When I turn mi a/c on, jus one fan cum on...but when i idle it up the other fan kick on...i thought both fan suppose 2 run at the same time...Iz this normal???
with the ac on normally one fan will operate, unless the refrigerant pressure is above a predetermined set point I think it would be above 300psi...then 2 fans...so if it where 100deg f out and you began vehicle operation with the ac on max the both fans should come on for a period of time until the air inside the vehicles gets down to a cooler temp.....
the other condition would be if the engine gets over about 235deg f then both fans should come on as well..this is not normal and the coolant system needs work if this occurs too frequently..
with the ac on normally one fan will operate, unless the refrigerant pressure is above a predetermined set point I think it would be above 300psi...then 2 fans...so if it where 100deg f out and you began vehicle operation with the ac on max the both fans should come on for a period of time until the air inside the vehicles gets down to a cooler temp.....
the other condition would be if the engine gets over about 235deg f then both fans should come on as well..this is not normal and the coolant system needs work if this occurs too frequently..
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