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Do i have a broken cam or a bad TPS?

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Old May 15, 2009 | 04:58 PM
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Default Do i have a broken cam or a bad TPS?
Ok, so i can drive normally with no problems, but once i get on it, and it gets to around 3k rpms the engine starts to cut out and sputter, like its misfiring. On my hptuners the KR goes way up into the red. Please help me diagnose this problem. Thanks
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Old May 15, 2009 | 06:37 PM
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i have the same problem on my stroker... i get on it or have been driving for awhile then it shuts off... or starts surging bad then it shuts off... i wonder what could it be... but on ur case it would be the tps..have u checked all ur connections?
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Old May 15, 2009 | 07:02 PM
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Fuel filter.
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Old May 16, 2009 | 02:22 PM
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i put a new fuel filter on when i put my headers on, and i tried to unplug my tps sensor and it still did the same thing.
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Old May 16, 2009 | 02:32 PM
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Mass Airfolw Sensor
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Old May 16, 2009 | 03:05 PM
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I had the same issue, cutting out at 4k at full throttle. Ended up being a ground for me.
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Old May 16, 2009 | 07:42 PM
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i unplugged the MAF and it still does it even then. Cant be that
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Old May 17, 2009 | 10:21 PM
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How much timing does it pull when it knock retards? Also what is your air fuel ratio at when you get on it, could be going way lean.
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Old May 17, 2009 | 10:23 PM
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Have you actually looked at all your scan tool data? You need to look at EVERYTHING, and no, unplugging things won't always make the problem go away. Do you have any DTCs?
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Old May 18, 2009 | 12:25 AM
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it could be a multitude of things, however my guess would be a poor connection on the crankshaft position sensor.
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