Loud electric fans
06-05-2015, 07:14 PM
#1
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Loud electric fans
Hey all, First post long time lurker.
I have a 2010 F150 XLT 4X4 with the 5.4. My AC leaks and i have to add a can of freon every so often. Well i was adding freon last night and according to the gauge that comes with the arctic freeze i was at 35psi, gauge says normal range is 35-45psi.
In the middle of adding freon one or both of my electric fans kicks in to what must be turbo mode,extremely loud. It has never done this before and now everytime i turn on the ac these fans stay in warp drive. Is it possible that the gauge is off and i overcharged the system? Could it be something else?
Thanks for the help.
I have a 2010 F150 XLT 4X4 with the 5.4. My AC leaks and i have to add a can of freon every so often. Well i was adding freon last night and according to the gauge that comes with the arctic freeze i was at 35psi, gauge says normal range is 35-45psi.
In the middle of adding freon one or both of my electric fans kicks in to what must be turbo mode,extremely loud. It has never done this before and now everytime i turn on the ac these fans stay in warp drive. Is it possible that the gauge is off and i overcharged the system? Could it be something else?
Thanks for the help.
06-06-2015, 08:55 AM
#2
Senior Member
The 35 psi is the low side pressure and it is set @ 35 to 40 psi to control the operation switch for the compressor. The high side runs at 300 psi and cycles with that switch. The fans DO turn on full speed with the A/C running. Again controlled by the same pressure switch. If the fans didn't kick into TURBO HIGH :-) something would be wrong.