Quote:
Originally Posted by davedeck
A hole in the bottom of the intake plenum was the issue. I haven't a clue what caused it but they covered it and everything smoothed out.
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Glad to see they figured it out, but did they not test for vacuum leaks during initial testing? I feel like that hole should have been fairly easy to spot. Irregular idle is often caused by vacuum issues. Again, I'm just wondering if you should reevaluate your relationship with said shop. Looking out for you and your car in saying so.