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Search Auto Parts Search 2003 ford explorer a/c clutch will not engage Sign up here!   Email This Post Auto Repair Home>> Automotive Repair>> Engine Troubleshooting redrobin713 New User Aug 10, 2008, 8:02 PM Post #1 of 5 (6211 views) 2003 ford explorer a/c clutch will not engage Sign In 2003 ford explorer xlt 4x4 4.0 ltr v6 a/c clutch will not engage. I have checked the fuses that i could find.I don't know if i am missing one or not. I have checked the pressure switches using a jumper and that did not work either. It will kick in using a jumper wire. It is full of freon. It is a duel system. Tom Greenleaf Ultimate Carjunky / Moderator Aug 11, 2008, 12:24 AM Post #2 of 5 (6208 views) Re: 2003 ford explorer a/c clutch will not engage Sign In A/C relay likely - think it's underhood. Don't be jumpering high pressure switch as you can blow the puter and kill the vehicle! What is your static pressure and why do you think or know it's full of refrigerant? T redrobin713 New User Aug 11, 2008, 4:42 PM Post #3 of 5 (6198 views) Re: 2003 ford explorer a/c clutch will not engage Sign In A friend has A/C gauges and Knows how to use them. I changed the relay and no change. Tom Greenleaf Ultimate Carjunky / Moderator Aug 11, 2008, 6:15 PM Post #4 of 5 (6192 views) Re: 2003 ford explorer a/c clutch will not engage Sign In Ok: Save the relay as it fits other locations and is a good test tool. Static pressure is all you may have now and that need to be roughly the same as the air temp psi = temp in Fahrenheit. When too full it would read the same and when under by a smidge system would shut down - that just static pressure info. Operating pressures require compressor to engage otherwise there's no way to know how much gas is in the system and that only tells of performance not that it is full which is why I asked. Full is only known when filled from empty by weight - period. You can jump an operative system with a low charge at its low pressure cut out switch (LPCO) for just enough time to take readings or charge a system. System will also shut down with excessive temp pressure conditions noted by a perhaps 3 wire high pressure switch which is connected to the car's computer. Jumping it can disable the computer's ability to restart the system or kill the car. That can be a costly test and avoided. Quite surely there's no voltage available to engage the compressor at all at the moment. If this particular system has sensed low static pressure vs the temp it can and will shut down A/C forever till reset in some sytems - this exact one I don't know but a static pressure reading is mandatory to begin diagnosis. Again - if it's 75F ambient temp the pressure should read 75-80 psi or higher if catching engine heat. If you see perhaps 50 psi and know it's at least 75F it's empty. Need to know at least that # to continue, T T redrobin713 New User Aug 12, 2008, 10:16 AM Post #5 of 5 (6182 views) Re: 2003 ford explorer a/c clutch will not engage Sign In Ok, thank you. Iwill try to get that # for you.   Email This Post   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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