2001 Ford F-150 plugs and coil

AFREEDOM4LIFE

MEMBER
2001 FORD F-150
V8
4WD
AUTOMATIC
130,000 MILES

In the past month my service engine light come on and I had it in the shop and they replaced the plugs and coil they reset the light and 200 miles later the same problem acured and it runs ruff when this happens I must add that I live in the country and drive through a lot of snow this time of year is this common and what can be done to fix this problem

Sunday, February 22nd, 2009 AT 12:10 PM

1 Reply

DAVE H

MECHANIC
13,384 POSTS

Check, clean or replace the CKP !

Crankshaft Position Sensor
The Crankshaft Position (CKP) sensor is a magnetic transducer mounted on engine block, next to crankshaft pulse wheel. On all engines except 6.8L, trigger wheel has a total of 35 teeth spaced 10 degrees apart with one empty space for a missing tooth. On 6.8L trigger wheel has a total of 39 teeth spaced 9 degrees apart and one 9 degree empty space for a missing tooth. By monitoring pulse wheel, the CKP sensor indicates crankshaft position and speed information to Powertrain Control Module (PCM). By monitoring missing tooth, CKP sensor is also able to identify piston travel to synchronize ignition system and provide a way of tracking angular position of crankshaft relative to a fixed reference.

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Sunday, February 22nd, 2009 AT 6:44 PM