[MBZ] AC Compressor staying engaged.

AC Compressor is staying engaged even though the temps are in low 20's F. It does disengage when in economy mode or off button is pushed on CCU. Is this caused by a faulty switch or relay. Any suggestions or trouble shooting write-ups would be appreciated. thanks, Mike 1984 300D

Re: [MBZ] AC Compressor staying engaged.

Could be a bad temp sensor (outside air most likely) or a bad PBCU. A stuck relay would run it all the time. Peter ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To

Re: [MBZ] AC Compressor staying engaged.

I would suspect the evaporator temperature switch (I don't remember the location in the w123 chassis, but it will be near the evaporator case) It should cut out at 25F... -- John W Reames jwrea...@comcast.net Home: +14106646986 Mobile: +14437915905 On Jan 2, 2010, at 10:04 AM, Michael Esh