What could be causing my 04 Beetle turbo to get bad gas mileage and hrd starting on 2004 Volkswagen Beetle

Diagnostic showed a bad coolant sensor... car will start up fine cold, but after driving and turning car off a couple times, it will not start. After letting it sit for 15-20 minutes, it will start again.

by in Chesapeake, VA on September 11, 2012
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1 answer
ANSWER by , September 12, 2012
could be several issue incl coolant sensor circuit or mass air flow senor,seek diag and est