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#1
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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. |
#2
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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. 1995 E300D - No A/C in the rain
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2009 ML350 (106K) - Family vehicle 2001 CLK430 Cabriolet (80K) - Wife's car 2005 BMW 645CI (138K) - My daily driver 2016 Mustang (32K) - Daughter's car |
#3
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Cars after 1996 no longer monitor the belt for slippage!
Most likely cause is the evaporator temp sensor OR the refrigerant temp sensor.
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#4
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Our 1998 E300D went through a few evap temp sensors. Common failure and the symptom is as you describe.
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John Shellenberg 1998 C230 "Black Betty" 240K http://img31.exs.cx/img31/4050/tophat6.gif |
#5
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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 |
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