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Recent content by GrandprixSteve

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    Throttle body bolt snapped off - cant find replacement

    2004 GT Evidently my torque wrench isn't sensitive at <10ft/lbs and I wasn't paying attention, doing three things at once, and I snapped one of the upper two bolts right off. It's the one that screws into the plenum, top right if facing the the intake. I was able to get it out of the plenum...
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    Hesitation then very hard shift accelerating from stop

    2004 Grand Prix GT - not sure if this is a transmission or engine issue - thought I would start here - I'll move if I need to When I'm accelerating from a stop the car slams into gear. It feels like it is downshifting hard but that seems weird as it would have to be starting in 2nd...anyway...
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    Engine bogs down intermittently at idle - poor MPG

    04 GT N/A 65K "no CEL" For several months now I've noticed the car bog down to 300 RPM then pop back up to normal - sort of a hesitation or hiccup - at idle only when I was coming off the freeway to a stop. Didn't happen often and only 1 or 2 "hiccups". Idle never went high, always bogged...
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    Should I replace oxygen sensor?

    I have an 04 GT with only 60k miles. The last 10k miles I've been running with a cooling issue I didn't have time to run down. I fixed it earlier this week. Flushed the coolant, new tstat, changed the air and fuel filters, plugs and wires. Ran a dose of techron through it. Car runs better...
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