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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

OBS engine swap

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Old Jun 24, 2019 | 05:11 PM
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Thumbs up OBS engine swap

I took a 96 351w and put it in a 95, I am wondering if the 96 351w had a crank position sensor but the 95 doesn't have the wiring for it .
will it still run without it ? or might that be the reason it wants to stall when come to a stop ?
 
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Old Jun 24, 2019 | 05:32 PM
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You should be using the wiring for the ‘95 truck.
 
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Old Jun 24, 2019 | 05:47 PM
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The #1 rule of engine swaps is don't use any wiring that comes with the donor motor. You pretty much have to use the '95 engine harness here, if the donor was from an HD truck you may get away with it but if it was from a 1/2 ton it's a complete no go because '96 was the first year for OBD2 and there were a lot of changes.

And with the '95 harness on the motor extra sensors like the crank position thingy don't matter because they weren't used with the OBD1 system. You would need to change the EGR components though as the OBD2 specific DPFE system isn't compatable with your OBD1 truck.
 
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Old Jun 24, 2019 | 07:12 PM
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Agreed, just checking things off the short list. There's no reason for engine stall that I haven't looked at
and the crank sensor and next ecm were the only things left to consider . After that I'm thinking target practice lol
 
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Old Jun 24, 2019 | 09:39 PM
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Are there active or stored fault codes from the KOEO test?
 
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Old Jun 25, 2019 | 10:13 AM
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96 351w swap into 95 f150

I did just keep the wiring on the 95 f150, but also did a complete egr delete . To see what that entailed there is a YouTube video for complete egr delete on 94 bronco.
 
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