PCM question

[xploder92]

hi everyone i am wondering if a ranger pcm and engine and trans harness will work in a explorer recenty, changed to a manual and found a ranger pcm and harness with a 4.0 and manual trans, any help would be apreciated i need to pass emmissions

 

[imp]

hi everyone i am wondering if a ranger pcm and engine and trans harness will work in a explorer recenty, changed to a manual and found a ranger pcm and harness with a 4.0 and manual trans, any help would be apreciated i need to pass emmissions

The main thing to determine, IMO, is that both the Ranger and Explorer used the same set-up for Oxygen Sensors, same number of them, similar locations. Be careful as there were two distinctly different 4.0L V-6s, the earlier an Overhead Valve engine, the later an Overhead Cam engine; PCMs for those would likely be different from each other.

The other headache might be incompatibility of the connectors used between the two. At some point, your Ranger harness will have to interconnect with the Explorer's. imp

 

[xploder92]

thanks for the reply they are both 4.0 ohv engines i was just hoping someone has done it before

 

[imp]

thanks for the reply they are both 4.0 ohv engines i was just hoping someone has done it before

If you go ahead, the harnesses fit together, the O2 sensors seem right, I don't see any reasons for trouble. If it don't work right, it can be MADE to work right. imp

 

[SoHK_alumni]

There are couple gotcha's involved:

While both the Ranger and Expo use a 42 pin body to engine harness connector, there are wiring differences in most year combinations. Nothing that cannot be resolved but largely not "plug and play".

Typically, Rangers use Type E PATS, the Expo uses Type B. Some differences in hardware and wiring, different keys.

Different years used different fuel pressures, think Ford changed the systems with the 99 MY.