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Discussion Starter #1
I have a 1995 STS.

Was driving it the other day, and the A/C just suddenly stopped working. It was after I turned the car off, in the middle of the day (about 95 degrees), and restarted it, since it hasn't worked.

The compressor is not engaging. When I push "auto," to turn on the A/C, the fan spools up to the max-cool speed, but the compressor doesn't engage. So I am thinking it is an electrical problem, but all the fuses work fine (tested them all including the relay).

I also check to see if there are any codes, which there aren't any (not bad for a '95 with 155k miles eh?).

After reading some other A/C posts on here, I still can't figure out where to start! What else could be the problem? Should I try to refill the refrigerant before I spend $2000 by taking it to the dealer?

Thanks for any help, Jim
 

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2000 Eldorado ESC
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First thing to do is get some A/C gauges and check the pressure's.
Harbor Freight has a set on sale for $39.

Post the results and we can guide you from there.
 

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White Diamond '03 DHS (with DTS floor shift)
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Check the electrical connector on the compressor and the relays if the pressures are OK. That said, if the pressures were low, you should have gotten a LOW REFRIGERANT message and a DTC.
 

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Discussion Starter #4
I tested the pressure and it was OK. So I took it to the shop, and they said it was the "high-side" connector, and it wouldn't turn the compressor on. I am not sure exactly what they said, because I've never heard of it, but they want $200 to drain the system, replace the faulty part, and then recharge it. Worth it?
 

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White Diamond '03 DHS (with DTS floor shift)
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I don't know much about pricing, but that does not sound too bad, especially if you want A/C.
 

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Discussion Starter #6
Also, is $600 a reasonable price to replace a water pump that had been leaking coolant?

I ask this because as I took it in for the A/C, I asked them to check to see if they could find the coolant leak, and they said it was the water pump.
 

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No it's not. Shop around. Book time for that job is 2.2 hrs
The pump is under $100. Even at $100 an hr that's $300 tops.
 

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Dealers (Cadillac, etc) have a warranty time guide, independent shops have a labor guide.
Chilton, Mitchell and several others. I have a Chilton guide. And
2.2 hrs is generous. Most good technicians can change a Northstar pump
in less then an hour. Labor guides are what repair shops use to quote a job.
Times can vary a half hour one way or the other, that's why they're called guides.
 

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An AC-Delco water pump part # 251-660 is $89 at Advance auto.
Check around, you can probably find a cheaper price somewhere.
That gives you an idea how much they are trying to make on you.
 

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White Diamond '03 DHS (with DTS floor shift)
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Not to mention that it is one of the easiest water pump in the world to change. Don't let them tell you otherwise.
 
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