- Mazda 3
- 125 K miles
- this is the first major ( > $300) thing to need fixing on this car
The problem originally was that when you turn the AC on you get some cool air for about 20 minutes. Then it slowly gets warmer until the air coming out is the same temperature as the outside.
What the mechanic did to fix the problem:
I took my car in to have the AC fixed recently. The ASE certified mechanic (small shop) did a test and found that the system wasn't leaking. Then he found that the condensor was damaged and so he replaced that.
But then he said the computer wasn't turning on the sytem so he replaced a wiring harness that was part of a recall (as in this wiring harness had a recall but I had never taken the car in to have the recall fixed). THEN he said the computer had to be reset at the dealer (he didn't have the right equipment).
My mechanic is now saying to me "the dealer says the expansion valve is clogged and needs to be replaced and their quote is $1200... but I'm not sure if replacing the expansion valve will fix the AC".
(After replacing the condensor and wiring harness, turning on the AC button does not have any affect on the temperature of the air coming out.)
I don't want to spend hundreds of dollars to replace a part that may or may not fix the problem. If it were a small amount ... I might go for it. But for a job that will cause $600-1200... I would like to know with greater certainty if replacing the expansion part will fix the problem.
Is there some test I can have a mechanic do to verify that the AC expansion valve is broken and needs to be replaced? Or do I have to just spend the money and hope the AC works again?
(If there is a test to check the AC expansion valve, how do I ask to have such a test done?)