Check engine light came on my VW Jetta diesel. My regular diesel mechanic close his shop so I had to find another mechanic - gave Scheller a try. They checked everything and did not find anything that need to be repaired. They probably could have tried to fix something and charge me, but they did not. They advised me that if the check engine light came back on - bring the car back out. Several days now and no check engine light. So far I think these guys are going to be honest. Thanks guys.
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