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Why does a 96 crown vic keep running after the key is out?

Updated: 8/16/2019
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15y ago

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Run-on or (Diesel ) is caused by low grade fuel. Also if the timing is set a little too high, meaning you need higher octane this will happen. Have the timing checked, lower it by a few degrees. With the price of high octane, a lower timing in the engine is the best solution. If you continue to have problems, make sure the idle rpm of the engine is not too high, if it is high, reset to factory spec's. If you still have problems, just turn the engine off while still in drive, then put it in park.

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15y ago
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Q: Why does a 96 crown vic keep running after the key is out?
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