Shane M.
I took my car to Deer Valley Car care because my car had engine light on and was getting the Mass Air Flow fault codes. They quoted me $150 for diagnostic fee which was 50% more than the my previous mechanic shop and even higher than the Dealer! But since I was already there, and they had good reviews. I agreed. I also told them that I had already replaced the mass air flow sensor and it did not make a difference. At the end of the day, they gave me a report that the problem is either the MAF sensor or the Turbo going bad and the cost of it was over $3000! I know that cannot be the turbo. So I replace the MAF sensors again in case I had gotten a bad sensor first time and the problem was still there. After that, I did some search on line and found out that this was actually a common problem with small turbo engines especially GM cars. And the problem in most cases were the dirty throttle body! How could they not know or check the throttle body for Air flow issues? I opened the throttle body and sure enough the throttle was very dirty and had gummed up a bit. I followed the online process and cleaned it up. After that the car idle was noticeably smoother and no more fault code or engine light. I went back to shop to let them know. Instead of apologizing and refunding the diagnostic fee, they said that I should have kept taking the car back to them so they would change all the parts themselves, MAF sensors, Turbos, and who knows what else before they could finally find the issue while I was paying thousands of dollars.! Very disappointed with their technical knowledge and troubleshooting skills, and above all very poor business ethics, they do not take any pride or responsibility for their work.
