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Old Jul 15, 2008 | 08:28 PM
  #1  
richardson.k.b's Avatar
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Computer Bad

I have a 2002 F150 4.6 V8. I think the computer might be bad. It isn't running very good (feels like a cylinder misfire), but the check engine light is not on. We hooked 3 different OBDII up to the computer and all of them say, please connect to computer, so it is not getting any kind of reading. Any suggestions. If you have any feedback on new computers to buy also let me know. Thanks
 
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Old Jul 15, 2008 | 10:30 PM
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It is highly unlikely that there is anything wrong with your computer.

Check the fuse for the cigar lighter (look in your owner's manual). It also supplies power used by the scan tools for power at the OBDII port and, when blown, will not let most scanners connect to the computer.

Steve
 
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Old Jul 16, 2008 | 05:51 AM
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That may be it. One of my cigar outlets doesn't have power to it. I didn't know it ran off the same circuit. I'll check that out and let you know the results. Thanks!
 
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Old Jul 16, 2008 | 06:35 AM
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That was a really brilliant idea to power the OBDII link with the cigar lighter circuit!

anytime you need to scan the vehicle...you get the lighter fixed free!

Mark
 
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Old Jul 16, 2008 | 07:23 PM
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Changed the fuse for the cigar outlet and it fixed itself. I would have never guessed that, Thanks a lot!
 
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