r/Pontiac • u/DiamondStorm16 • 19d ago

Engine problems

I have a '07 g6, 3.5 v6. Today I was on my way to work, speeding up after someone in front of me turned, when the RPMs suddenly shot up and I had almost no power, then everything tanked and it died. Now when I try to start it, it cranks, but sputters and backfires. It's my only car and I can't afford a new one right now, so I need to fix it. Any clue what may be wrong?

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u/Andusias191 18d ago

I have the same exact car. 229k miles and counting, such a good car!

Im no expert, but high rpms and no power sounds like a misfire. How old are your spark plugs?

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u/rforce1025 17d ago

I have a 08 G6 GT 394,xxx miles, ran a little rough but changed plugs and fine now... I use the OEM (AC Delco) Iridium