I was wondering if some of you A/C experts out there can tell me what all there is on my 2003 ford ranger edge 4.0L that the ECM takes data from that would cause it to not switch on the clutch. I have changed the cylcling and high pressure switches also the dash switch and the throttle positioning sensor. I have a fully charged system and can force the ac clutch on by jumping a wire to ground from the appropriate relay prong and it will blow cold air. I have also jumped out the high and low switches in case the new ones I bought were bad still no luck. I really hope my computer is not to blame. Any ideas or info would be greatly appreciated.

 

Damn....I'm having the same problem.....joined to try and find an answer. My air bag light is on too, is yours? I read somewhere that the airbag system is tied into the aircondition system some how???

I need help too....someone? Mine's a 1995

 

By dash switch, do you mean the A/C control on your Instrument panel?

 

By the dash switch I mean the switch that lets you choose between Max ac, normal ac, vent, heat, ect. It was a combo electrical and vacuum switch.

 

alrite, I think its something electrical obviously. sometimes the A/C compressor will not run if there are certain problems with the A/C system. it may be a wire problem. have you checked all your grounds?

 

Your ECU controls the signal to the WOT (wide open throttle relay). When you stomp the gas it shuts off your ac compressor off. Could be a fault in that circuit.

 

Just cheack you compressor and check your cut off of AC is working properly. May be fault in that part.

 

I have a 2003 ranger it does not have a WOT relay. Everything is computer controled. If I am wrong in this can somebody let me know the location because it is not in the power distribution box under the hood.