Question about 2003 Ford F150 Regular Cab

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Check engline light on a 2003 f150 why?

Why does my check engline light stay on? I have a 2003 f150 regular cab

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With the truck running feel around the engine vacuum lines under the hood on the passenger side. listen to see if you can hear a vacuum leak or if you can feel one with your fingers. it will probably be close to the firewall close to the rear of the valve cover

Posted on Jun 21, 2009

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Check engine light comes on when the computer senses a problem with an emissions component. Take youre vehicle to a place like autozone or other parts store that does free obd ii scans. They will give you the codes and tell you what they mean. You can then post them here where we can help you further.

Posted on Jan 13, 2009

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1 Answer

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if you checked fuses, bulbs are good, and running lights work, then i would check the brake switch.

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Check the Fuse for the OD function, this is cab fuse panel fuse #29, 5A.
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1 Answer

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Could be the door ajar switch ( part of the door latch ) is gummed up, and needs to be WD-40 sprayed into it, and close open the doors a few times, and repeat.

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Oct 06, 2009 | 2003 Ford F150 Regular Cab

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