iHateVolvoPeople
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- Joined
- Feb 1, 2014
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- Midwest
Just as a conclusive post so you don't have to go reading
We decided to simply replace the R/D (cheap insurance), vacuum the system to remove moisture, BUT then we depressed the schrader valve to get pressures back to 0 (do not charge a vehicle with ES12A while under a vacuum. Do it at 0inHg). Then we charged with the correct amount of ES12A and the ac blows about 40F no matter how hot.
>>>>>>>>>>>>>>Original Post Below>>>>>>>>>>>>>>>>>
1990 740 LH2.4
AC doesn’t work. Jumped the compressor with 12v and it engages like it should. Car sat for a couple years so I’m thinking it all leaked out, there was green sludge on the bottom of the compressor when I looked underneath the car. I have service records for a $2.5k dollar Volvo dealer visit from 10+ years ago. PO had a new compressor and a buuuunch if other AC work and other stuff done.
I will likely pay a 'professional' to do the work so I don’t blow myself up. I’ve recharged the r134 systems on the 93 cars but this is different.
Do I have them pull a vacuum, then recharge with r12 (or r12 equivalent) + Volvo lube? Or do I do the same but just throw r134 fittings on and fill with r134 + volvo lube? I’ve read something about r134 leaking out of r12 systems due to molecule size. I’m not wanting to pay $300+ to tear the system apart and replace it with r134 components. Also wondering if there’s a substitute lube I can use where I don’t have to drive to the dealer.
I’m all about quick and dirty jobs but this is for my SO’s car so I want it to be reliable and cold for her.
We decided to simply replace the R/D (cheap insurance), vacuum the system to remove moisture, BUT then we depressed the schrader valve to get pressures back to 0 (do not charge a vehicle with ES12A while under a vacuum. Do it at 0inHg). Then we charged with the correct amount of ES12A and the ac blows about 40F no matter how hot.
>>>>>>>>>>>>>>Original Post Below>>>>>>>>>>>>>>>>>
1990 740 LH2.4
AC doesn’t work. Jumped the compressor with 12v and it engages like it should. Car sat for a couple years so I’m thinking it all leaked out, there was green sludge on the bottom of the compressor when I looked underneath the car. I have service records for a $2.5k dollar Volvo dealer visit from 10+ years ago. PO had a new compressor and a buuuunch if other AC work and other stuff done.
I will likely pay a 'professional' to do the work so I don’t blow myself up. I’ve recharged the r134 systems on the 93 cars but this is different.
Do I have them pull a vacuum, then recharge with r12 (or r12 equivalent) + Volvo lube? Or do I do the same but just throw r134 fittings on and fill with r134 + volvo lube? I’ve read something about r134 leaking out of r12 systems due to molecule size. I’m not wanting to pay $300+ to tear the system apart and replace it with r134 components. Also wondering if there’s a substitute lube I can use where I don’t have to drive to the dealer.
I’m all about quick and dirty jobs but this is for my SO’s car so I want it to be reliable and cold for her.
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