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92 245 a/c questions, R134 system 200

posted by  bcg on  Sat Sep 11 11:33 CST 2004
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last visit: Sun Jul 27 08:12 CST 2014
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i just bought a 92 245 a two weeks ago. i knew the a/c wasn't working well, and now i'm trying to fix it.

my 92 245 w/ r134 a/c is cooling only very little. i did install an a/c clutch today, which works fine, and needed replacing.

after the a/c clutch repair, i observed the following.

1) the a/c is on, a/c clutch is engaged, i see one a/c line going in through the firewall freezing up.

2) i see no condensation discharge (water from the evaporator) under the car, and i felt the evaporator and it's not cool. also, the mechanical heater valve works and it is closed, so i can rule that out.

3) i thought it might be the expansion valve, but this system appears not to have one.

4) it appears to have freon, because the a/c line is freezing up, and the a/c clutch engaging when turned on.
i'm at a dead end.

evaporator clogged? high pressure switch/low pressure switch bad?

i would search for help, but the search engine is shut down.

i'm new to this upgraded system, and this system doesn't have a peep glass in the accumulator.

i have worked on earlier 240 a/c systems. i've completely R134-retrofitted my a/c in my 86 245, and it works great.

thanks again!!
byron golden
86 245, 1 owner, 245k+ mi
92 245, owner 2, 136k+ mi






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