Hi badly1, Welcome to 2carpros and TY for the donation
Sounds like the alternator is not compensating for the additional load place on the engine from the compressor or the computer is not picking up the compressor engagement input signal to increase engine speed thru the IACV. Won't hurt cleaning out the MAF sensor with a electronic cleaner.
If there's a problem with the charging system the engine management system will not function correctly due to the required input voltages to operate the sensors/PCM/TCM
Monday, February 15th, 2010 AT 2:34 PM