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P0300 that keeps coming back
Posted to Technical Discussion Forum on 5/3/2018 22 Replies

Been having some comebacks with this vehicle. It does have a P0300 on multiple cylinders and does run just a hare rough at idle but smooth off and after that. Fuel trims are -8. Got no vacuum leaks and ignition is good. MAF is clean. Only odd thing is that on ... Login to read more.

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car Vehicle Data

2005 Pontiac G6 3.5L

VIN 1G2ZG52875
Engine3.5 L
Trans4-speed Automatic (Electronic)

car Vehicle Data

2005 Pontiac G6 3.5L

VIN 1G2ZG52875
Engine3.5 L
Trans4-speed Automatic (Electronic)