Hey everyone, Im sure that there are a few of you that have had or are having this same issue.

I have a 1983 300D Turbo 123 that is running the R134 conversion with a new compressor, dryer and high/low pressure switch, blower, climate control unit, and all new vacumm pods. (These are the parts that I have changed or had my mechanic change)

Even when I have the system re-charged, it STILL only blows cooler air. Never cold.

I heard there was an ETR (Temperature Regulator) but no one can seem to find that part for me.

Any ideas?

Thanks in advance!!

BG

simple fix.
remove the R134, evacuate the ssytem, install R12, enjoy cold air!

I'll second that. Elvira, my 300CD still has R12 and blows COLD, even down here in humid, sub-tropic, South Texas. My wife's 300SD was converted to R134 years ago, at the suggestion of our mechanic - it was lame - several years later, we went back to R12 - it's fine now.

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Houston, Texas
1984 300CD 235K miles, Elvira, one owner
1987 300TD 180K miles
1974 TR6 78K miles Sarah Jane, one owner
OBK #27

123guy, How are vent temps at idle with R12? Is there a big difference between moving and at idle?

__________________
1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg

The ETR is next to the blower motor under the PS kickpanel . It is a little box with a looping wire going into the evap. holder.

BTW, I recently refilled my r134a system in the 240D from empty, and I have had no complaints about the temp, even at idle so far this summer.

Of course it has been a mild one down here - high temp so far only near 95 with humidity steady at 50-75%

__________________

Current Mercedes
1979 maple yellow 240D 4-speed

Gone and fondly remembered:
1980 orient red 240D 4-speed

Gone and NOT fondly remembered:
1982 Chna Blue 300TD

Other car in the stable:
2013 VW Jetta Sportwagen TDI / 6-speed MT