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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Engine code question

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Old Dec 14, 2015 | 06:27 PM
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Engine code question

I pulled codes on my 4.9L 1990 F150 to see what it would have. One of the codes was koeo 26. I looked it up and it said VAF/MAF out of range. My question is my truck doesnt have a MAF it has a MAP and I know where it is located. My father had this truck for over 10 years and now it is mine. So why am I getting this code exactly? I am planning to pull codes again to see if it gives me 26 again.
 
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Old Dec 14, 2015 | 08:02 PM
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For trucks code 26 is Transmission Oil Temperature (TOT) sensor out of range, if the engine and trans were not at operating temp when the codes were pulled this code can be set.
 
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Old Dec 14, 2015 | 08:36 PM
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Now that I look back at the website I got the code description from it does say that. Well tomorrow I do plan on trying to do a KOER test. So I will do KOEO again to check that one. This truck has been in the family just about my whole life and it sat for a good 3 years before I finally go it. I want to see what I can get code wise.
 
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