Car Problem Reports

Buick Riviera Cam sensor interrupter failure

 
Buick Riviera Problem
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Model Years Affected: 1991, 1992, 1993

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The camshaft position sensor interrupter (magnet) on the camshaft sprocket may fall off causing the check engine (SES) to illuminate. If this fault occurs on high mileage vehicles our technicians recommend to also replace the timing chain at the same time.

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