Do you know what the code was or is in computer if shop did not check go to autozone and have them check it knowing the code whould help a great deal to my knowlage the egr valve has nothing to do with the a/c. I would like to know what the code was to help you more this is what makes your a/c work.
A/C Pressure Sensor- Damaged or faulty A/C pressure sensor or A/C pressure sensor circuit.
A/C Clutch Coil- Damaged or faulty air conditioning clutch coil (fails to energize and engage air conditioning clutch).
A/C Clutch- Air conditioning compressor clutch not engaging.
A/C Compressor w/o Clutch- Refrigerant in system is low, contaminated, or restricted.
A/C Compressor w/Clutch- Damaged or faulty a/c compressor and/or clutch, low oil level.
A/C Condenser- Refrigerant in system is low due to leaking air conditioning condenser.
A/C Expansion Valve- Damaged or restricted air conditioning expansion valve or capillary tube.
A/C Accumulator- Damaged, clogged, or restricted A/C accumulator/receiver drier.
Tuesday, October 14th, 2008 AT 7:26 PM