73-87 Chevy _ GMC Trucks > Electrical
Electric fans
dieselman123:
I have a 83 c10 with dual electric fans and want to know how to go about turning the fans off at higher speeds with A/C on. is there a way to wire this up
VileZambonie:
Why would you turn it off with the AC on? You need the fan to keep the high side pressure in range. You could install a pressure switch on the high side but it would hardly be worth it.
dieselman123:
I feel as though there is no need to have the fans on while driving 50+ mph.....
Rapid Roy:
Fans are necessary for system cooling.
You can connect a cut off switch on each one. Go for a drive.
Please report back with the results.
VileZambonie:
Modern systems use a high side pressure transducer where the PCM closely monitors high side pressure. If it determines system pressure is in optimal range for conditions it can energize and de-energize the fan relay as needed. Unless you can closely monitor this you run too high a risk of damaging the system. Relying on ram air isn't good enough as high side pressure can climb too rapidly.
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