Question about 1999 Ford Super Duty F 550

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My f250 supperduty wont start after i installed a supper chip i removed itand it still wont start

My truck wont start after installing a power chip so i removed it and it still wont start and ineed to know if there is a fuse or a relay thta controles the computer

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  • hjjackson923 Jun 02, 2009

    ok do you know where i can find a fuse and relay dirgram for that truck and which relay is it that may have blown

  • gerry bissi May 11, 2010

    yes, there is a power relay for the PCM. Maybe the chip compromised the security and PCM needs to be reflashed. Call your Ford dealer for advice.

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  • Ford Master
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This is for 6.8L engine. If you have 5.4L, let me know.

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Posted on Jun 02, 2009

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