How cold is your R134?

[AtlBenz]

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?

[Mike Murrell]

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.

[david s poole]

possible that the fresh air doors are not closing in both cars.

[lee polowczuk]

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.

[AtlBenz]

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.

[emerydc8]

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.

[just-n-time]

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.

[wscheffer]

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!

[JFawcett]

Mine gets around 45 or so. 1987 560SL - 134 system, new drier, schrader valves and a prayer for nothing else!

[JPMOSE]

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!