Quote:
Originally posted by hanssolo
I need a vacuum pump to service my A/C. Harbour Freight has one for $16. This seems very cheap. Says it'll pull a full vacuum in 2 minutes. Does this require an air compressor? It says something about 90psi.
Also, my blower switch goes out evry 2 yrs. and has to be replaced. The hi position always works though. Strange.
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Keep in mind you need to pull the vacuum for at least one hour. You'd be better off paying a shop to pull the vacuum. They can also leak test it.
The high position of the switch is straight through as in not going through a resistor. The bearings on your evaporator fan motor might be shot and causing it to draw more current than normal. This causes the lower-speed resistors to open up.
Richard