Does that mean its under the blower cowling near the compressor relay? Yes. You gotta take off the cowl, then pull the some wiring from the fan area as the sensor is underneath stuff between the two fan cages, in front of the motor. Two 8mm bolts, I think hold it in place. Down pretty deep. If you think you can reach the tranny you are about deep enough. Really not to bad once you know where it is buried.

This device controls the compressor, turning it off when the evap is cold enough to freeze up. Mine broke and did not allow the compressor to come on at all. I went without it until I got one from a junkyard. Used a jumper and turned the a/c off occasionally to allow the ice to melt off the evaporator.

• Where is the evaporator temp switch in an '86 735i? - davidc 2004-08-26 20:29:41 (435 views)
  • another thing to check - dave88te 2004-08-27 10:22:48 (340 views)
  • The Evap Temp Sensor is under the cowl> - kff 2004-08-26 21:24:57 (419 views)
    • Is it the circled area in this photo? (pic) - davidc 2004-08-26 22:36:55 (564 views)
      • OK, I've verified that the circled area IS the evaporator temperature switch (pic) - davidc 2004-08-27 20:07:46 (2857 views)
        • Re: OK, I've verified that the circled area IS the evaporator temperature switch - dave88te 2004-08-27 21:26:32 (330 views)
      • Is that from the engine compartment or the passenger comp? - kff 2004-08-26 23:31:52 (360 views)
        • Here's a blowup of that area. I don't see anything that looks like (pic) - davidc 2004-08-26 23:42:59 (500 views)
          • The evap temp sw has a Gray and a Green/Brown wire to it. - kff 2004-08-27 00:08:39 (369 views)
        • You see that big metal edge on the heater box in the photo? - davidc 2004-08-26 23:36:00 (450 views)