Another strange A/C problem
Thread Starter
Newbie
Joined: Sep 2007
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1998 Mercedes C-280
Another strange A/C problem
The a/c on my 1998 C-280 works fine while the engine is idling or at a constant speed while cruising down the highway. However, if there is ANY load on the engine the blower speed decreases to low and different air vents open and close. In other words, if sitting at a traffic light and I touch the accelerator, this happens. As soon as I reach a constant speed and there's no load on the engine the blower goes back to high and the air coming from the vents returns to what I had when I was sitting at the traffic light. While cruising down an interstate, if I press the accelerator pedal this happens, and when I let off the accelerator everything returns to normal.
This seems like a vacuum problem to me, but I can't find any leaks anywhere and there are no other vacuum problems such as windows, trunk, etc. Using a code scanner, it shows no errors.
Any suggestions what could be causing this?
This seems like a vacuum problem to me, but I can't find any leaks anywhere and there are no other vacuum problems such as windows, trunk, etc. Using a code scanner, it shows no errors.
Any suggestions what could be causing this?
Last edited by MoovnOn; Sep 5, 2007 at 12:32 AM. Reason: misspelled word
Thread Starter
Newbie
Joined: Sep 2007
Posts: 6
Likes: 0
1998 Mercedes C-280
This problem has been fixed. It was a vacuum leak in one of the vacuum elements that operates the vent flaps. If anyone else is having similar problems, PM me and I'll try to provide some help regarding how to troubleshoot vacuum leaks.
MBWorld Fanatic!
Joined: Apr 2007
Posts: 6,171
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300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
Code scanner?
The climate control on 98 and up MB have a built in diagnostic program.Glad you solved the problem!Funny that with a vac leak it didn't throw a CEL.
ohlord
"GOT CODES?"
ohlord
"GOT CODES?"
