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08-11-2006, 07:45 PM | #1 | |
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Join Date: Aug 2006
Location: NORTH PROVIDENCE, Rhode Island
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Air Condition Problem On 200 Ml320
I Have A 2000 Ml320 And Having A Problem With The Air Condition.
The System Has A Full Charge Of R134 And The Compressor Keeps Shutting Of After A Few Minutes Of Use. When It Works It Is Ice Cold. Would Anyone Have An Idea Of What Could Be Wrong? |
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08-27-2006, 10:09 PM | #2 | |
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Re: Air Condition Problem On 200 Ml320
could be the aux. cooling fan fuse, if blown, system may work for a while but after pressure gets too high, with no fan to reduce heat, compressor will stop. if the fuse is blown there is a wiring harness update that can handle more amperage and higher fuse rating. check evaporator temp sensor, or bad pressure sensor.
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09-07-2007, 12:37 AM | #3 | |
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Re: Air Condition Problem On 200 Ml320
Thank you for posting these answers.
I have a 2000 ML320. I had filled the Air Conditioning system with a new can of 134a thinking my coolant was low. NOT THE CASE! Turns out the Blower unit fuse # F44 was Blown out. I replaced this fuse and the fans started working again - HOWEVER, the AC system would not cool. Reading on line, I found out that because I had added another can of coolant, the systems coolant pressure was WAY too high! YIKES! I measured the system with a gage I picked up an the pressure was at 110lbs + I blead off the pressure until I got it back down to about 80 - 85 Lbs. The system immediately started cooling again like brand new. Hope that helps someone else. -Chloe |
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05-09-2009, 01:15 PM | #4 | |
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Re: Air Condition Problem On 200 Ml320
Thanks for the tip!
I had just added some 134a refrigerant and I lost all cooling power. After I reduced the pressure, it works great! |
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