Jun 032016
 

2001 Ford F1502001 ford F-150 4.6 misses after it warms up a little. runs smoothly while cold.


RESPONSE

When the engine is first started(cold) the computer uses preset parameters to operate the engine until it reaches normal operating temperature(warms up). At this point it moves from using the preset parameters to using the signals from the engine sensors.

The first thing to check would be any trouble codes that might be stored.

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