aux fan not coming ON.
In my 1990 230E the Aux fan does not come on, .. even when i turn on the AC. There are 2 (black) relays on the driver side of the engine compartment firewall. Could one of the relays be the problem. While driving the temp goes to 110!. A week back the fan was working and the max temp was around 100!. How do i diagnose the fan?.
Help is appreciated.