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Questions and Answers

Pontiac Bonneville No Start

Q. 1988 Pontiac Bonneville 3.8 liter FI type 3 with fuel in rail and dry plugs. No Spark at plug, no juice in wires, no power on coil towers, only lights up on one prong below each coil on module (which I have replaced for same result). No codes being set, only reads 12. Good/strong turnover but no attempt to fire. Sensor bad? New EGR and O2 sensor.

Pontiac Bonneville No Start

A. It sounds like a crank sensor. It's mounted behind the harmonic balancer.

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