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Recent content by Vincenzo

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    PO171 case help

    2008 Grand Prix 3800 SE3 I drove the car more than usual last December while I was going uphill on a highway when a sudden loss of power occurred that was temporary, no codes. I went straight to an expert who test drove it violently and did not notice a difference but he "felt"a lean condition...
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    How do engines die?

    So, my current car is the first one I had this long and that's been aging in my possession. I'm planning on keeping it forever (or whatever practical with cars that may mean) and did replace the transmission two years ago and little by little took very good care of it at lower and lower costs...
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    Airbag Troubleshooting

    For a while now, I had an intermittent airbag dash light situation. I rattled the connectors under the seat and I "guess" that made some change, but the light is still intermittent. My next step is to remove the front seats so I can get a better access to those connectors, so I can, then, do...
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    PCV valve replacement question

    My question is about my 2008 grand prix V-6 3800. In my last few oil changes I started getting a loss of about one qt every oil change that I, initially, blamed the 135k miles for. Mechanics and other more experienced people agreed that the loss I'm having is normal for the age of the car...
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    Coolant leaks or major block damage?

    I apologize if this kind of issue was discussed somewhere else in the past, but I tried searching and couldn't find anything that helps. So, in my 2008 GP 3L8 that is about 8 years old now with 125K miles, I was driving last night and everything was going well until I decided to stop for a...
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    DIY Cleaning Fuel Injectors?

    Hello nice people, I just watched a video that reminded me of the 1990's and 1980's, when I had a very smart older friend (and sometimes boss) who owned a small car electronics garage. He was an inventor and I was his electronics geek young friend. One of the electronic circuits I designed and...
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    Cooling System/Sensor Acting Weird, A Puzzle for Experts

    ok, so I finished reflushing (emptying-starting for 10-20 min-filling radiator) 10 times (5 with distilled water to get all the old antifreeze out and five with 60/40 dexcool to bring it back to specs, first 2 times, chemical flush was added) purged the system the best I could, put new OEM...
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