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I Need Help ASAP!!!

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Old May 2, 2012 | 07:26 PM
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Ok so im driving along today and my bonni SSEI just flat out shuts off on me no warning lights no nothing and wont turn over again. so i sit for maybe 15 mins and try to start the car again and boom it turns over so i sit in a parking lot for 5-10 mins to see if it does it again and it starts to sputter when the rpms get to the 700 range and the rpm needle jumps up and down then it shuts off again. What could this be? There is gas in the car, no lights on the dash and the car drives fine until that happens What is it? Please i need to fix this so i can go to work in the am!!!
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Old May 2, 2012 | 07:56 PM
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Sounds like a bad CPS (crankshaft position sensor). If you can get it to crank and not start, check it for spark.
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Old May 2, 2012 | 08:22 PM
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Crank shaft position sensor is the most likely culprit.
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Old May 3, 2012 | 01:02 AM
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but the car runs, it just shuts off after maybe 10-15 mins
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Old May 3, 2012 | 07:43 AM
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electronics dont like heat, usually when they fail its when heat soaked so the sensor is fine cold and when hot makes your car not spark anymore.
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Old May 3, 2012 | 08:19 AM
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Part of the problem might be the MSD coils in your mods list, they don't have the best track record.
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Old May 3, 2012 | 02:09 PM
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but the car runs, it just shuts off after maybe 10-15 mins could it be the O2 sensor because i smell a eggish type smell from under the car
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Old May 3, 2012 | 05:10 PM
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That'* just an indication that it is running rich, or your cat is "gone".

Just because it is running, doesn't mean something is wrong. If you have the stock coil packs, reinstall them.
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Old May 3, 2012 | 07:06 PM
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coils wont make the car stall just run like crap
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Old May 4, 2012 | 08:37 AM
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I still say it is likely to be a bad crank shaft position sensor. When mine failed it often restarted itself based on road speed and still being in gear. Even when it didn't restart on its own, it would usually restart right away as soon as I pulled over and got it into Park. As the sensor degraded further, it got to the point where the car sometimes would not start for 15 or 20 minutes, but that was after I had been having the problem for a month.

That was the first time the CPS failed on my car. The second time I was driving home last new year'* eve and out of the blue the car stalled. Pulled over, got it into Park, and it restarted. I put a new CPS on 2 or 3 days later (as soon as the parts stores were open) and never had the problem again.

Your description of the car running and shutting off after 10 to 15 minutes is consistent with a CPS failure.
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