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  #11  
Old 04-11-2023, 03:42 PM
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Quote:
Originally Posted by EODguy View Post
Condenser....

If your system drained completely before you swapped out the compressor OR the compressor shit the bed 100% then put on a new condenser, as the oil can slugg the system when you fill and restart it...

(Don't ask me how I know!!)

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What did your compressor oil look like when you replaced it, was there any debris?

I am assuming that the compressor clutch was my only issue, and did not dirty the whole system. The compressor oil was very clean, which I think supports that assumption.


I took it to get recharged today and and they weren't able to pull a vacuum. Took it home and took a look and realized a pinched an oring on one of the compressor hoses, so going to go through those again.
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  #12  
Old 04-12-2023, 01:30 AM
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My oil wasn't bad per say, but the oil settled in the condenser and then upon refill/restart it went through the system as a giant clump of oil.
Which slipped me the high hard one on my new compressor. I'm not saying it will happen to you but a condenser is cheap compared to rebuilding again...

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  #13  
Old 04-12-2023, 10:28 AM
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To add to this I just turned my A/C on for the first time this season and no-worky ;( The problem turned out to be an oxidized connection at the compressor so a bit of a wiggle and the clutch cut in. I had replaced the compressor 2 seasons ago and I maybe should have bit some contact grease in the connector (which I normally would do) but didn't that time. Has some on now though!
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  #14  
Old 04-12-2023, 11:11 AM
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Originally Posted by 80stech View Post
To add to this I just turned my A/C on for the first time this season and no-worky ;( The problem turned out to be an oxidized connection at the compressor so a bit of a wiggle and the clutch cut in. I had replaced the compressor 2 seasons ago and I maybe should have bit some contact grease in the connector (which I normally would do) but didn't that time. Has some on now though!
Was it the electrical connector that was oxidized?
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  #15  
Old 04-12-2023, 12:06 PM
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The compressor clutch connector
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  #16  
Old 08-14-2026, 09:40 AM
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Hi,

Just curious for those with M54 engines, what brand of AC Compressor did you use?

Feedback?

PS: FCPEuro lists:
- Mahle (China) $550
- Bosch (China) $475
- Nissens (China) $352

Is Calsonic still available?
How about Denso, where is it made?
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  #17  
Old 08-14-2026, 09:52 AM
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I think I went with the Nissens which usually is a good product. There is another thread about this and I think the Nissens is a bit noisier than the OE at times but has been working perfectly.
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  #18  
Old 08-14-2026, 12:20 PM
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I tried a Nissens and it cooled adequately but it had a weird sound that the OE Calsonic did not have.
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  #19  
Old 08-14-2026, 01:58 PM
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Just curious...

What was the mileage when you replaced your AC Compressor?
What were the symptoms?
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  #20  
Old 08-14-2026, 04:15 PM
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I've been running an eBay compressor for 8k miles (2 years). It cools to 40F at the center dash. No issues running around in 100+F around Austin. I spent $120.10. I would use the same seller again. https://ebay.io/m/ag4q7y

Nissens, Delphi, and Bosch have been good on other vehicles. I replace an '18 Sentra compressor this morning. A Nissens compressor was used. It cooled to 40F in 93+F degree weather today.

Clutch failure is a common problem on most vehicles I've fixed for A/C problems.
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