Hi, I own a 2003 Ford F-250 Truck, with a 6.0 Turbo Diesel Engine. It is a 4 x 4 with approximately 92,000 miles. The A/C is not working, so opened the hood and noticed the compressor is not engaging. The fuse is okay, so I thought it might just need to be recharged, so I bought an Artic Freeze R134a kit. I hooked up to the low pressure side, and the gauge said the system was overcharged.
Here is what happened. When I disconnected the switch, I noticed a slight engine rpm decrease. When I jumped across the two wires on the connector I get a slight increase in rpm same as with the switch connected. Nothing else changes, no compressor rotation, or fluctuation in pressure. (Note: I have verified that the compressor turns easily by hand). Thanks again.
I started the engine, turned on the A/C, climbed under the truck and tapped on the compressor hub/clutch assembly as instructed. The clutch is still not engaging after much tapping. I did notice that the clutch assembly seemed pretty wobbly inside the hub. I understand they have springs inside to aid in disengagement, but I was surprised that the springing action was as light as it is. Does this sound normal?
I crawled back under the truck, and verified that the compressor rotated freely. I checked for side to side movement, and did not find any, but I did notice that the front plate seemed to move forward a little as I jiggled it. I pulled it fwd as I wiggled it, and it came completely off in my hand. Turns out that the retaining bolt has fallen out. Do you suppose that if I put in a new bolt it will work?
Stopped by the auto parts store, picked up a 6 mm-1.0 x about 3/4" long. Installed the clutch plate. Installed the bolt. A/C is now working flawlessly. Wish I would have used a mirror and noticed the bolt missing a couple of months ago. LOL. I am just happy to have it working, and even more happy that the cost was under two dollars. Thank you for all your wise counsel. I am now cool. Thanks for having this site
Wednesday, August 8th, 2007 AT 1:54 PM