Cadillac Seville / Cadillac Eldorado Forum Discussion, Air Conditioner Help - 1999 STS in Past Cadillac Vehicle Discussion; I have a 99 STS with the typical hot driver's side and cold passenger side issue. That aside, now my ...
I have a 99 STS with the typical hot driver's side and cold passenger side issue. That aside, now my passenger side is not colder either. I recently added freon with the dye and found no leaks however my high pressure gauge reads low. The low pressure side is reading about 35. Is my compressor the culprit or should I look elsewhere first? The top bolt on the compressor is tough to get to. Any help will be appreciated.
I reconnected the manifold gauges to get an accurate reading. I've got absolutely no pressure in the system. The freon must have leaked out overnight. I pulled the schrader valve and found a small chip or two. That explains why the a/c tube at the valve was cold when I added freon but, the accumulator remained warm. It looks like I need a compressor!
Automobile(s): White Diamond '03 DHS (with floor shift)
Re: Air Conditioner Help - 1999 STS
Pull the orifice tube. If the screen is full of debris, the compressor is shot and you will also need to replace the accumulator and condenser as well as flush out all the lines including the evaporator.