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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

1987 OBD1 Plug Location????

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Old Feb 25, 2011 | 09:12 PM
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1987 OBD1 Plug Location????

Yes I have read all the threads about how to use it and where it SHOULD be located. I have searched the inside of the fenders near the firewall high and low, following the the wiring harness, etc. I did find two connectors hooked behind the fuse panel on some retaining clips that have 3 pins each, one grey one black, but nothing that matches the pics and discriptions I have found. Now the wiring harness is far from unmolested, the previous owner has spliced and hacked to high heaven. I have kind of figured it got hacked off. Any other suggestions?

Picked the truck up for $500 bucks and im starting to tear into fixing it up. its an 87 f150 ext cab w/ 351 and someone slapped a 4 barrel Holley on it.

Thanks in advance
 
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Old Feb 25, 2011 | 09:15 PM
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From: Cottage Grove, WI
Good luck. In 87 im 99% sure the 351W trucks came carbed from the factory...

Otherwise it will be under a cover bolted to the back side of your airbox. will say EEC TEST PORT on it.
 
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Old Feb 25, 2011 | 09:17 PM
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Yah ... thats what I thought ... its gone

Thanks for the pic ...
 
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Old Feb 25, 2011 | 09:20 PM
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In 87 the 351w came stock with the 4bbl holly and no obd1. the 351w did not go EFI tell 88. I love my 87!
 
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Old Feb 25, 2011 | 09:35 PM
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Originally Posted by pintoches
In 87 the 351w came stock with the 4bbl holly and no obd1. the 351w did not go EFI tell 88. I love my 87!
Good info ... thanks...
 
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