Date registered: Feb 2007
Location: Florida, USA
Mentioned: 0 Post(s)
Quoted: 62 Post(s)
Most people who have older cars have problems with them. I too like to fix everything myself but I draw a line when I spend days troubleshooting something with no results, or have a job that requires a high lift and plenty of time. I too have been burned by incompetent mechanics, including the ones at our local Mercedes dealership. I took my 300SD to them because the A/C compressor would not come on. After several hours of trobleshooting I was told that I needed the auto temperature controller box for $ 1,200! They charged me $ 180 for the diagnosis and I left. I bought the same controller for $ 230 from an aftermarket source, installed it and nothing! Over $ 400 down the drain and no results! So I stated troubleshooting the system myself. I found the problem in less than an hour. It was the thermostatic switch in series with the main A/C switch. Very clearly shown on the schematic. All I had to do was jumper the switch out of the circuit and the A/C compressor immediately came on. The replacement switch cost less than $ 50 and it took about an hour to install it.
Last edited by p100; 05-12-2009 at 04:28 PM.