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Old 10-15-2013, 03:38 AM
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Question Periodic Engine Light But No Codes

Hello all,

I've a 2002 F350 7.3. A few weeks back the engine light started coming on but so far it also goes out. While driving it will just come on with no other indications of a problem but then go out after a little bit of time. I have a Pocket code scanner hooked up to it because it was not leaving a code. While driving and when the engine light comes on I read the codes but nothing is coming up and the Pocket scanner has no indication that the light is on. The light coming on does not seem to be associated with a particular RPM nor does it seem to be associated to power demands or coasting.

I have changed the oil and fuel filters, the air filter is fine, and we've gone through several tanks of fuel from different vendors.

Otherwise the truck seems fine. No detectable change in power or performance. Even after a few cool nights without the block heater the truck starts right up and runs fine.

I know many of you would say that there isn't a problem but something is making that light come on. Besides it is remarkably annoying and I will not be able to get a state inspection if that light comes on.

Any ideas?

Thank you,
Fred
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Old 10-15-2013, 05:52 AM
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Your "Pocket Scanner" is NOT compatible with your truck. You certainly Do have a code, if the light came on. It's a stored code that the right scanner will retrieve. Unfortunately, it takes a professional scanner (NOT what they have at the Parts Stores) to read our trucks, which are Not strictly OBD-II, and you have to either buy a real scanner (like the AutoEnginuity) yourself or take it to a professional to have it scanned for you.
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Old 10-17-2013, 09:36 AM
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Quote:
Originally Posted by NoRalPh View Post
Your "Pocket Scanner" is NOT compatible with your truck.
Well that pretty much stinks. I guess I will have to take the truck to Ford and let them have it for a few days and see if they can read the code or catch to code when the light comes on.

Thank you,
Fred
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Old 10-17-2013, 12:35 PM
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check out the "TORQUE APP" thread. Its a great scanner/gauge reader, for our trucks, IF you can get it to read the truck. Im still tryn to figure that out....Its on "google play" for 5 buks download it and order up a bluetooth obd device for 25 buks.
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