AFAIK, if the immobilizer was engaged the starter wouldn't turn over. It could be a fuel or spark problem, but not your immobilizer.
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2002 Boxster Base - Arctic Silver - Tiptronic
2010 Subaru Forester
1980 Ford C-8000 Custom Cab Emergency-One Fire Truck
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"I never lose. I either win or I learn." -Nelson Mandela