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Ford F-250

What would cause your overdrive switch to start to flash on your F 250 truck?

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Wiki User
July 11, 2009 11:25PM

We had that happen once on a '99 F-350, thought it was electrical........turned out that a vacumm line back near the firewall had come lose. The clamp we used to fix it was a lot cheaper than the egr and air intake valve we bought trying to solve our problem.....another lesson in checking the small things first before you go jumpin the gun. Logan