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04 4.0 to an OBD1 5.0


build-it

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I just bought a 2004 FX4 Ranger that I want to swap the 4.0 to an OBD1 5.0. Any thoughts or guidance would be appreciated. First question; could you run the 5.0 off of one PCM, and the rest of the truck off of the 04 PCM? I did this with a 99 SD F-350, swapped in a Cummins left all the pcms hooked up for the body modules.
 


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19Walt93

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If your state does emissions inspection the same way NH does, that won't work. 8600 GVW and up are exempt here. It's better to know for sure before you spend a bunch of money.
 

build-it

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If your state does emissions inspection the same way NH does, that won't work. 8600 GVW and up are exempt here. It's better to know for sure before you spend a bunch of money.
No emissions test here
 

build-it

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Anyone have a thought on this? Thanks
 

RonD

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The 2004 Ranger was first year for digital dash, HEC, and CAN Bus, network between modules
Also first year for SJB, smart junction box, body computer

Only issue is the PCM and dash interface since dash needs data from the PCM to show speedo/odo, and warning lights, other modules shouldn't be an issue as far as functioning
PCM and HEC are also "married" so one won't work without the other, to prevent odometer tampering
If the 2004 is a manual transmission that would make it easier, as far as leaving PCM and HEC in place
2003 and earlier Ranger would be easier, all analog

You can of course run another PCM for 5.0l, again manual trans would be best/easier

People have done V8 swaps into 2004-2011 Ranger so it can for sure be done
I would look for those builds
 

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After around 02 swaps really dial up the difficulty level.
 


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