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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

OBD1 test plug location???

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Old Jul 11, 2020 | 02:10 PM
  #16  
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I was referring to my posting a photo that someone had posted previously. I'd not seen it and posted the same photo. I pop in and out on a small device with terrible connectivity so I may not get to see the contributions made by others.

As noted by someone previously my OBD1 connection was hiding in plain sight with the relays and didn't seem to have ever been accessed. Thank you all for the assistance, I pulled my codes and a stalling / rough idle condition I had been having was a worn throttle position sensor.



 
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Old Jul 11, 2020 | 02:11 PM
  #17  
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Originally Posted by My4Fordtrucks
Found it! Isn’t that gray connector the self test input wire?

That was it, thanks for the tip.
 
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Old Jul 11, 2020 | 03:14 PM
  #18  
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Understand now. No problem. Glad you got it fixed.
 
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