AC system is fully charged but no cold air. My mechanic said the condensor will not turn on and thought it was eithr a relay or a fuse issue.
SOURCE: Buick Roadmaster 1996 AC not working
The linear actuator that regulates the blend of air between hot and cold was broken and needed to be replaced. That was my suspicion. Fuses were all good. Relays were all good. Compressor pump cycled. Freon was "proper". Dealership only charged about $400 in parts and labor to confirm my guess.
SOURCE: 1993 Buick Lesabre Limited A/C problem
disconect the negative battery cable from battery for 20 seconds and replace cable back,then try ac let me know if this helps u
SOURCE: 90 reatta, service ac.is on and compresser clutch
It may be a bad pressure switch or refrigerant temp sensor.
SOURCE: 1996 Buick Riviera Cooling fan won't shut off. we
COOLING FAN IS CONTROLLED BY COOLANT TEMPERATURE SENSOR (CTS). REMOVE THE CONNECTOR FROM IT AND IT SHOULD STOP THE FAN.
OR JUST REMOVE BATTERYGROUND CABLE.
ITEMS TO CHECK OUT :
CTS,RELAY,CIRCUIT FOR SHORTS.
NOT LIKELY BUT IS A POSSIBILITY, THR ECU.
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