99 E300D AC Stops...
 

Hello All,
The A/C in my 1999 E300D stops working on occassion... I'll be driving and I can sense the compressor doesn't come on. It might be after 5 minutes or after 2 hours.

Once I stop the car, shut it off for 10 seconds, then re start, it works fine.

Any thoughts or anyone experience anything similar?

TIA
Neil.

Check belt tension. A loose or slipping belt will trigger the system to shut off the compressor to prevent damage.

You may need a new tensoiner if you are unable to improve the belt slippage.

Also see this thread...might be related.

http://www.peachparts.com/shopforum/tech-help/72627-1995-e300d-no-c-rain.html

Cars after 1996 no longer monitor the belt for slippage!
Most likely cause is the evaporator temp sensor OR the refrigerant temp sensor.

Our 1998 E300D went through a few evap temp sensors. Common failure and the symptom is as you describe.

Thanks & Followup
 

Thanks GBenz, MB Doc, & Blackmercedes!

I had checked the belts, but tightness doesn't mean it wasn't slipping.

Is it easy to change the evaporator sensor? A DIY job?

Thanks,
Neil.
99 E300D
94 S350D
83 500SEC euro
79 406 Unimog

gone but not forgotten:
84 300D
84 300SD