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#1
10-25-2006, 09:24 AM
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1988 560 SL a/c
 Hi,We have a 1988 Mercedes 560SL. The car wouldn’t start, but this was fixed by replacing the fuel pump relay. However, the a/c compressor then failed to operate. We checked that refrigerant is o.k., the blower works o.k. and we have put in a new a/c relay, but the compressor still fails to switch on. We still wonder if this is related to the fuel pump relay, since the failed nine-pin unit was superseded by a new replacement unit which is now ten-pin. Is there anything else we should have done when replacing the fuel pump relay, or any other part we should check? Thanks Atissa@earthlink.net 
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#2
10-25-2006, 07:15 PM
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Hmmm I would try to jump the power in/signal (30 & 87?)out sockets for the Klima relay to see if that makes the compressor start, just so you know it's not the compressor itself or the clutch.
Gilly
__________________
Click here to see a photo album of my '62 Sprite Project Moneypit (Now Sold)
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#3
10-25-2006, 07:46 PM
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How did you check the freon if the compressor did not operate? There needs to be a minimum amount in the system before the compressor will engage.
__________________
I got too many cars!! Insurance eats me alive. Dave 78 Corvette Stingray - 3k 82 242 Turbo Volvo - Manual - 270k 86 300e 5 speed manual - 210k 87 420sel - 240k 89 560sl - 78k 91 420sel - 205k 91 560sel - 85k 94 GMC Suburban - 90k 97 Harley Davidson Heritage Softail - 25k 00 GMC Silverado 1 ton 30k
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#4
11-03-2006, 09:17 AM
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1988 560 SL a/c
Thanks for the notes. I don't know anything about cars. Two different mechanics checked the car for me and the part was sent by the MB dealer and verified by another MB part department. All I know is that the car was serviced few months ago and a/c worked before the part was replaced.
Do you know anyone who could repair the car in Myrtle Beach?
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