Vehicles running R-134a are very sensitive to having the correct pressure and amount of oil in the system. Even a half pound extra can keep a system from blowing cold air and make it blow hot air. If you did not have the system cycled and filled with oil, you should have that done as the wrong amount of oil will damage your new compressor as well.
The fact that the front and back were different might be something to do with vent doors in the airbox. I realize you did not work in that area but unless the air was not cold enough to stay cold by the time it got to the back, that may be the issue.
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Friday, June 29th, 2012 AT 1:06 AM