97 SL320 A/C problem, any help??

[RConrad]

After about 30-45 minutes, the A/C freezes up and the fan slows down. Upon checking, I've found that the compressor never stops running. I've been just turning it on and off at the dash switch every 10-15 minutes. I've checked and cleaned the aspirator above the mirrow, it runs OK. Any help/suggestions please. I really would not want the dealer to get hold of this and wind up with all new parts til he hits the real problem.

Ron

[ILUVMILS]

The Evaporator Temperature Sensor is probably reading higher than it actually is. Pretty common.

[RConrad]

Iluvmils

I have run the tests i've seen listed here, they follow:
01=76f
02=91f
03=36f
05=82f
06=170
07=16*6
08=105
other #s:
3.5=66
3.6=64
3.8=65
3.9=63
4.1=61
clo=60
off=54
43=6-6
50=33f
51=72
52=64f
Does any of this ring any bells with you???Where is the evap. sensor located?

Thanks for any input

Ron