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Old 01-11-2010, 07:28 PM
Junior Member
Join Date: Jan 2010
Location: on the Delaware River
Vehicle: 2003 Ford F150
Posts: 2
dash lights and gauges erratic, truck won't start?

I have a 2003 F150 with a 4.2. When I turn the key on the first position, the dash lights blink and gauges sweep quickly. The truck turns over but won't start. At above 40 degrees, I can leave the key on, and in a few minutes, everything normalizes, and the truck will start. Colder, and it never normalizes. Today marks 6 weeks at the dealership. They have replaced the computer, transceiver and keys, none of which helped. They are at a loss. Does anybody have any suggestions?
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Old 01-11-2010, 11:16 PM
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Join Date: Jan 2002
Location: The Bluegrass State
Vehicle: 2012 F-150 King Ranch
Posts: 31,304
Going to move this up to electrical in an effort to help you get some answers... best of luck!

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Old 01-12-2010, 12:16 AM
Technical Article Contributor
Join Date: Jun 2002
Location: Under the flightpath of ORD 22R
Vehicle: 2006 FORD F150
Posts: 10,290
replace the battery, the gauge sweep is an indicator of a dead battery
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Old 01-18-2010, 04:48 PM
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Join Date: Jan 2010
Location: on the Delaware River
Vehicle: 2003 Ford F150
Posts: 2

Thanks, but I failed to mention that the battery was the first thing I changed. The dealer says it has spark, and it has power and fuel at the injectors. Apparently the ground is not pulsing at the injectors. This is regulated by the computer, which is new. It starts when it's warm, the weather has been nice, so now it's starting, and it's impossible to troubleshoot! I'm bringing it home and it will be a fair weather truck, or going to a relative's in Florida! hum... how about a carburetor?
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Old 01-18-2010, 04:48 PM


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