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  #1  
Old 06-22-2007, 06:48 PM
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Location: Atlanta
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How cold is your R134?

I just did the core job on my 95 E320, had it recharged, and I'm getting about 50-52 degrees F at the vents. I tested my E420 which had the core done a couple years ago and it too is right there at the 50-52 degree F mark. Is that normal? not cold enough? what are you getting with your R134?

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  #2  
Old 06-22-2007, 07:07 PM
Mike Murrell's Avatar
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50-52 degree vents temps in Hotlanta during the summer...bet that's not too cool.

My MBs R-12 cools down between 38-42 degrees at the vents when working.

My '04 Tacoma is equipped with 134A and it freezes me out.

I'd say your system needs work.
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  #3  
Old 06-22-2007, 07:10 PM
david s poole
 
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possible that the fresh air doors are not closing in both cars.
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1988 Mercedes Benz 300TE (With new evaporator)
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  #4  
Old 06-22-2007, 08:00 PM
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are testing it at speed? i would say the car needs to be running at 1500-2000 rpms to get a fair reading... at idle in the city...50 probably isnt bad.
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  #5  
Old 06-22-2007, 09:13 PM
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yeah it was at idle.

everything is new in the 320, new core, new drier, even new cabin filters and blower motor.

I'm going to take a digital thermo with me tomorrow and drive around.
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  #6  
Old 06-22-2007, 09:24 PM
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I'm getting a steady 40F at speed and about 50-55F in stop-and-go traffic at 109 F outside today. Other than when I parked my car for a few minutes and restarted it, I have not seen coolant temps above 100C. The CoolHarness works great.
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  #7  
Old 06-22-2007, 09:32 PM
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I use freeze12 and get 40 when the climatic wheel is set at 65 in the drive way. It gets cold enough that the heat cycles.
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  #8  
Old 06-23-2007, 01:37 AM
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Thumbs up Cool 42

I get a steady 42 F. with revs at 1500 to 2000 running R-134a. Just put in a new evaporator, expansion valve and dehydrator.

Not bad for a 20 year old car though!
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  #9  
Old 06-23-2007, 05:34 PM
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Mine gets around 45 or so. 1987 560SL - 134 system, new drier, schrader valves and a prayer for nothing else!
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  #10  
Old 06-23-2007, 06:35 PM
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I get 42 Degrees F in my 560SL and 300D on a 95 degrees F day. This is at a normal driving speed. I have actually been quite satisfied with my 134a conversions on Mercedes. My BMW didn't fare so well!

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