Arduino OBDII not working

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i received sparkfun can-bus shield christmas year. eagerly loaded example code onto arduino, when connected didn't work. code can found here. tried both can demo , ecu demo, neither worked. display "engine rpm:" no number. on can demo ever option chose, gave name, no number. have 2000 chevy cavalier 2.2l. have idea problem or can fix it? believe should work 2000 cavalier because has obdii port. thoughts?



Arduino Forum > Using Arduino > Motors, Mechanics, and Power (Moderator: fabioc84) > Arduino OBDII not working


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