Mechanics

SHOULD BOTH FANS COME ON WHEN AC IS TURNED ON, CAUSE ONLY ONE COMES ON KNOW,

1992 Nissan Sentra • 230,000 miles

When I turn on ac, only one fan comes on, engine compartment(fan2) and it does'nt seem to be cooling correct, I added one can of freon, but noticed when, like idiling in traffic it starts blowing warm air, (inside car) but get back on highway and it starts cooling again a little better, when I turn the fan blower switch to High, it blows warm air, so I put the switch back to 3 it starts cooling again, I think my regular (fan1)(engine compartment) is not working because I use to hear it come on but not sure.
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Kevind65
June 18, 2012.




Both fans should come on when the A/C is turned on. The main fan is not working and you need to check if it is the motor that has failed or the relay.

With only the condenser fan working, the cooling is insuffucient for proper A/C operations at low vehicle speed.

KHLow2008
Jun 18, 2012.


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