A/C clutch not engaging???

[LongrangeLauber]

Back in September, I replaced my A/C compressor because it locked up on me. I never got it charged since it was going into the winter. I went and hit the A/C button the other day and noticed the clutch did not engage. I checked the A/C fuse and even replaced the relay but it still did not engage. Now, I have a turn on wire piggybacking off of a green wire that goes into the compressor for my electric fans to turn on when the clutch on the compressor engages. Not sure if that affected anything, but I don't believe that's the problem. Any help would be great

[Chris]

If the charge is too high or low it wont engage

[LongrangeLauber]

So how do I get someone to charge it if it will not engage?

[Chris]

They guy who did mind jumped the low pressure switch and it let it engage. He told his students it was a special tool(paper clip)

 

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[LongrangeLauber]

Gotcha. Does anyone know which wire going to the a/c compressor (there are four) is the switch wire to engage the clutch? I have my turn on lead for my efans (flex a lite) hooked up to a green wire going to the compressor and when I hook up the turn on lead for my fans to the fan controller, the fans turn on and stay on even after I shut my truck down or when I turn off the climate control, so I guess the green wire is a constant 12V power supply.

[Chris]

Oh you want to wire the fans... that one I don't know. I have a pcm harness for mine

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[LongrangeLauber]

Thanks. I'll try it tomorrow to see if it engages. Now only if I knew the clutch engagement wire, I would be golden!

[txab]

So how do I get someone to charge it if it will not engage?

It doesn't have to be engaged to charge it. If it has been sitting idle as you describe, it needs to go to a shop and have it vacuumed down, checked for leaks and then charged DO NOT ENGAGE THE COMPRESSOR IF THERE IS NO REFRIGERANT/OIL INSTALLED!

 

Why do I have a feeling you know nothing or not much about what you're doing?

[LongrangeLauber]

It doesn't have to be engaged to charge it. If it has been sitting idle as you describe, it needs to go to a shop and have it vacuumed down, checked for leaks and then charged DO NOT ENGAGE THE COMPRESSOR IF THERE IS NO REFRIGERANT/OIL INSTALLED!

 

Why do I have a feeling you know nothing or not much about what you're doing?

 

Came with oil in it, I know it needs to be vacuumed down, but that doesn't mean it cant be engaged. I replaced all the seals when I replaced the compressor and everything else that is recommended to change when you crack the lines open. I still want to know if it will engage before I put it in the shop and they charge me out the @$$ for something stupid.

[Jsdirt]

Was the system flushed after that last compressor grenaded? If not .... you'll be doing this a 3rd time ....

[LongrangeLauber]

Thing is, it didn't blow up. It just seized and didn't turn again. When I poured out the oil of the old compressor, there were very minimal flakes of metal. I also replaced the condenser and the accumulator while I was at it. The clutch hasn't engaged yet so I can always have the shop flush it before they pull a vacuum and charge it. They will probably recommend it anyways

[Jsdirt]

That would be a good idea. I'd HIGHLY recommend a flush, new accumulator & new condenser. Might cost more, but you'll only do it once.

[LongrangeLauber]

I already did everything new, but not sure if the accumulator is still good considering it has been sitting idle for 8 or so months. I will definitely ask them about a flush when I take it in hopefully early next week. Its starting to get warm, so I definitely wanna try out the new a/c system and electric fans, since Ive only had it over the winter

[Jsdirt]

You'll want to replace it - there's a dessicant bag & filter in there. If it's been open to the atmosphere for any length of time, the dessicant becomes waterlogged. Water & A/C systems don't mix.

[LongrangeLauber]

I'll have em replace it at the shop. Tired of dealing with this truck. Did a motor swap a year ago (it deserved that), but had 3 trannys go out since then. I blame the guy that did them. Luckily he honored his warranty, and I only paid for a couple parts. Still not gonna use him though