Have Ford Questions? Ask a Mechanic for Answers ASAP
Hi my name is***** can will try to assist you
can you tell me year ,make & model and mileage ? thanks
so low side indicating 40 psi with truck running , but a/c clutch not engaged correct other compressor is not on or is it coming on & off , is it cycling quickly ?
the short or quick cycling indication of low system Freon
but if the system is full and the compressor is cycling then we need to look at the low pressure switch mounted on the a/c drier in that model ,it will be like a screw in type ,screws on side of a/c drier with 2 wire connector on it , these are common failure on f-serie, especially at that mileage . we can test that one , with jumping the connector .if that is causing the a/c clutch from coming on off, if we jump the connector that you unplug from the low pressure switch, the ac compressor should stay on .
let me know what from what i described is happening and i will try to narrow it down for you.