Re: Fw: LT-1

[Chipsbyal@aol.com]

Bruce, the 8051 PCM is not as friendly as some of the other ECM's we're used 
to, as far as the A/C system is concerned. It (F-Car) relies on a high 
pressure side pressure sensor. This in turn with an evaporator temperature 
sensor controls the compressor clutch and fan relays. To duplicate this R134a 
system isn't the easiest to do. Since the A/C codes don't illuminate the SES, 
I just hardwire the A/C as I want and use redundant relays to operate the 
fans for condenser cooling. This keeps the PCM from setting fan relay codes, 
which keep them on for the key cycle.
AL
----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo@lists.diy-efi.org