Car Problem Reports

Pontiac Bonneville Misfire Due to Failed Ignition Coil

Pontiac Bonneville Problem
5 Reports
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Model Years Affected: 2004, 2005

Engines Affected: 3.8L V6, 4.6L V8

Average Mileage: 106,536 mi (62,000 mi - 151,073 mi)


An ignition coil may fail causing one of the cylinders to misfire. Each of the two banks of cylinders has its own coil assembly. If one ignition coil fails the coil assembly for the corresponding cylinder bank must be replaced.

  • Visitor, , 3.8L V6, 151,073 mi

    Hard to start about half of the time, wont get up to speed no where near as fast as it used to, starts shaking bad going down the road, will take probably 2 minutes to get up to 60mph

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