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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

My infamous Code 67 has returned!

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Old Dec 30, 2015 | 09:32 AM
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My infamous Code 67 has returned!

Two years ago I searched high and low for the source of this code. (67) To no avail or nothing on my part, it went away. I was doing some routine work yesterday and thought I'd run the codes and now it is back. I just put a new clutch in the truck and did not touch anything else. So I am asking in the past couple of years has anyone dealt with locating the problem?
 
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Old Dec 30, 2015 | 09:45 AM
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I failed to mention this is a 1985 5.0L EFI basic cab.
 
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Old Dec 30, 2015 | 09:53 AM
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Is this what you got the first time?
<table border="1" width="566"><tbody><tr><td align="center" width="28">
67

</td> <td align="center" width="63">
</td> <td align="center" width="453">
Park/Neutral circuit fault – PNP
</td> </tr> <tr> <td align="center" width="28">
</td> <td align="center" width="63">
</td> <td align="center" width="453">
Transmission Manual Lever Position (MLP) sensor circuit – Transmissions
</td> </tr> <tr> <td align="center" width="28">
</td> <td align="center" width="63">
(M)

</td> <td align="center" width="453">
Intermittent Park Neutral Position (PNP) sensor fault – PNP
</td></tr></tbody></table>
 
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Old Dec 30, 2015 | 11:02 AM
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Code 67 - 1985 5.0L EFI - 4 in the floor

Yes that is what I got. Never could find anything connected to the transmission other than the backup light switch. Replaced the clutch switch that had been removed that prevented you from starting the truck in gear.
 
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Old Dec 30, 2015 | 11:05 AM
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What trans do you have in the truck?
 
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Old Dec 30, 2015 | 11:13 AM
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If the rain will let up for a minute I'll run out and check. I am just not sure what transmission is in it. Is that information on the sticker, or do I need to find a tag attached to the transmission Chris???
 
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Old Dec 30, 2015 | 11:20 AM
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Your door sticker will have the trans code.
 
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Old Dec 30, 2015 | 11:24 AM
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Sticker says it has a "F"
 
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Old Dec 30, 2015 | 11:46 AM
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My book says it is a four speed Warner (T-18)
 
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Old Dec 30, 2015 | 12:07 PM
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I am not really familiar with the T-18s but from what I could find the only sensor on those is a backup/reverse sensor. Not sure if it's the same thing as what you called the clutch switch.
 
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Old Dec 30, 2015 | 12:30 PM
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The clutch switch is located on the clutch lever that was the only thing we could find that was related to the transmission in our search.
 
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Old Dec 30, 2015 | 12:52 PM
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Back-up Lamp Switch in picture
 
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Old Dec 30, 2015 | 06:07 PM
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I found the backup switch plug, but as your pic indicates nothing else hooks to that transmission.
 
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Old Dec 30, 2015 | 09:06 PM
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KOEO or KOER?

Could be A/C on during KOER test?

https://web.archive.org/web/20110414...index.php?p=47
 
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Old Jan 2, 2016 | 02:49 PM
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No I checked and I have had the air turned off. This neutral switch I have been told to look for is not on this transmission. In fact I don't see where it would attach to operate. Richard
 
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