Buick Riviera Problem Report
Buick Riviera AC Not Cold Due to Refrigerant Leak and/or Pressure Sensor Fault
The air conditioning system can be prone to refrigerant leaks and failure of one or more pressure sensors. The AC pressure sensors should be checked for proper operation when ever the AC system is serviced.
ac was serviced 3 times . however after 5 days the freon had leaked out. although the tech had put a tracing die and after charging system could not find a leak with sniffer.....still a leak occured etc...HELP - Visitor
service ac light on and ac won't operate. Buick service says pressure senor bad(as reported in codes). no parts available for this so they couldn't fix my problem. They reset codes added 5 ounces of coolant and it now works. - don10911
A/C leaks replaced freon with sealer. - Geno777
The EGR tube may develop an engine vacuum leak causing the check engine (SES) light to illumina...
The crankshaft position sensor, ignition module, and/or powertrain control module (PCM) may fai...
scanner code is PO102. I replaced the MAP sensor with an AC-Delco part.Also checked wiring harn...