I just found this forum tonight and wanted to pick y'alls brains.

I recently retrofitted my wife's Subaru with a new AC system. With this newfound skill, I thought that I might like to take care of the AC system in my truck. I've been driving around hot ever since I got it a few years ago, and in Texas in summer its no joke.

How do I determine whether the AC Compressor is good or bad? I took a wire, connected it to the hot side of my battery, and touched first one pin on the compressor, and then the other, and it did nothing. Not sure where to go from here.

Any help would be appreciated.

2001 F150 6 cyl

 

One side should be for 12V the other for ground. Use a multi-meter and check resistance to ground on each terminal on the plug side. The one that shows continuity is your ground and the other is for 12V. Match the correct pin on the compressor and then you'll see if the compressor will engage. Don't hold it on there long as there may be an issue with the compressor and the clutch may also be a problem. If it does run you'll need gauges as well to check pressures. In fact, if you don't have any charge, I wouldn't even try to jump the compressor.