7747 A/C enable

[Gary Derian]

I saw a grenaded evaporator once, I had no clue how it could happen.  Are
you saying it blew because the compressor stayed on without cycling?  That
would only cause it to ice up.

Gary Derian <gderian at oh.verio.com>

> Unforunately, I now believe that Ludis is right...that is the polarity of
> the computer output is opposite (not the state of the output).  I found
the
> A/C wasn't cycling AFTER grenading the evaporator (ESTER oil is very
messy).
>   Originally, I JUST switched output contacts on the relay (as many of you
> suggested), then the compressor engaged on request, and doing this
> eliminated the pressure switch from the circuit, somehow; For record the
> blame is mine as I did this BEFORE writing for everyone's advice.  I
bought
> a new evaporator and rewired the car to the 92 Roadmaster Schematic. Let
> this serve as a public service message to save money ($125 evaporator and
> Freon charge cost).
> -Brent
>
> To reply directly
> mailto:ober_b at sssnet.com
>
>
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