My 1994 E class air con has ceased blowing cold,the illuminated button on
>the dash marked EC is now flashing ,instead of glowing constantly.Do you
>think the system needs regassiing,or is it a more expensive fault...ie: the
>compressor...any advice would be gatefully recieved..thanks. Mal. >
regardless of what is causing the problem it needs servicing, this is something you probably cannot do on your own. FWIW: the A/C in these models do not seem to have the greatest track record
Interesting.
I thought I had a problem with the A/C controller in mine as well. Turned out to be a loose connection. The nice 21-pin spade connector (very firm) apparently runs to a TERMINAL BLOCK at the side of the console. This is not visible until you remove the carpeting on the side of the console. A few of the screws were loose, and the ground wire had completely come off. Didn't check the wiring carefully until the formerly intermittent unit stopped working totally.
Probably came loose over the years. But I still wonder why have such a wonderful connector at the unit and then run the wiring through a terminal block. For easy troubleshooting by the techs?
Regards, WS
Your a/c system is a closed loop. If you have lost coolant, there is a leak and adding more coolant will not correct this problem. Go to a shop who knows what they are doing and ask if they have fluorescein dye injection which is put in the loop. Under special light, the leak becomes obvious. Then you will KNOW what the problem is and what needs to be replaced instead of guessing. P.
STOP USING IT OR TRYING TO USE IT NOW ! !
Once there is a problem it is easy for it to spread to other items in the system (this means added cost!). Get it looked at by an air-con specialist. Ask for a re-gas, they will pressure test it as part of the re-gas and let you know if there's a leak.
There is a pressure sensor in the system that will shut it down if the pressure is too low (leaky refrigerant). It sounds like you are on the threshold of that. On/off cycling. A/C gets a pounding, the system on your car is no better or worse than most. It is just that people think A/C is a fit-it-and-forget-it item. It isn't. It needs regular maintenance to stay working properly. You should also run it once a week (even in the winter) for a short burst at least. Mike
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