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  #1  
Old 05-05-1999, 12:04 PM
guenter
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appreciated previous response. Knowing a bit more now I notice the following:
- a/c clutch engages and stays engaged

- the 'fuel-economy-gauge' suggests that there _is_ a load on the engine. One can also hear rpm change a bit etc. when engaging a/c

- climate control appears to work (blower, vent changes, etc) except the air coming out isn't cold.

- fuses are OK

- failure of a/c wasn't slow but occured
between turning car off at night and starting again in the morning.

- very puzzled, guenter. any help appreciated!

p.s. Is a sruck valve reasonable? do I then need to rebuild the compressor?
  #2  
Old 05-05-1999, 06:43 PM
MB STARS
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Have some one to check it have enough freon in the system or could be the expension valve
Check the heater valve is working correctly? ?
  #3  
Old 05-05-1999, 08:37 PM
Jim Collins
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For what it's worth, I have a 420 SEL where ac seemed to work fine but the air getting warmer and warmer. I've had the car for 2 months, and noticed that there was oil on the lines leading from the condensor (the grill like component attached to the front of the radiator). Took it a shop, they vaccumed the lines and refilled with oxegen then checked for leaks. Sure enough, the rubber line leading from the condensor to the dryer had a leak. Line cost $27, will cost about $175 to have it installed then recharged with freon. In my case, as the freon leaked out the system got warmer. Maybe your's leaked overnite. Just a thought. Good luck!
  #4  
Old 05-05-1999, 10:50 PM
Benzmac
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Be sure the system is fully charged...
Have the Mono heat valve checked to be sure it isn't letting any hot water into the heater core.

------------------
Benzmac:
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LEAD TECHNICIAN FOR 14 BAY FACILITY
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