PeachParts Mercedes-Benz Forum - View Single Post - 1987 300TDT (W124) Climate Control Problems

swogee · #15 12-20-2005, 06:22 PM

I was wondering if the control unit was the cause of the ACC clicking noise or not. It looks like I might have to spend the bucks on a new control unit after all. I thought the new aux pump might solve all of the problems, but it only cured the max heat at speed and the heat coming only out of the defroster vents problem. The ACC seems a little less erratic with the new aux. pump but not quite normal.

Craig, do you know how the ignition switch can cause the clicking with the climate control? I'm not sure if your symptom would have the same cause as mine since you have a W123. The ignition switch on my 1987 300TDT has been replaced at some point in the past.

speedy300Dturbo, where did you get your climate control unit from? I know they are available from Beckman and Programma (from World PAC) as rebuilt units. Do you know which one is better? Have you heard good or bad things about either? I seem to recall reading that the Programma units are hit or miss.

Thanks for responses.

-Steve