Code 27 keeps coming back 93 Dakota V-6

You may have a vacuum leak at the intake manifold or other vacuum source, follow the link.

https://www.autocodes.com/p1138_ford.html

I have ran codes and it keeps throwing a fuel code but fuel pump is working as it should.???? What code ??? P0 what ? Can't help without knowing code .

That's Random or multiple missfire code. Have you checked for proper fuel pressure? Improper fuel pressure will trigger this code if it's too low, thus causing a lean mixture in multiple cylinders.

Sounds like a fuel problem,You did the coils,plug wires and sparkplugs, that should of taken care of the misfire,You may have a EGR that stay open and doesnt close properly and it doesnt set a code why the ECM compensate for the false air.Now this causes rough idle,and smooth cruise with no misfire until you get to stop or idle speed.The map sensor this can also fail when warm especially if the vacuum it is suppose to get is not met. And a failing MAP causes a lack of power. A TPS failing causes a stumble and lack of power but no misfire.

Since you have fuel injection for fuel delivery, something has to tell the system how long to have the fuel injectors open, and something has to tell the system when to activate each fuel injector ... unless you have throttle body injection. Do you know which type of fuel injection you have? I will need that answer above before telling you anything useful.

Sounds like MAF(Mass Airflow Sensor).

Computers aren't ALWAYS correct. If a code wasn't cleared after the original problem, it will read the same codes off to the diagnostic. I would remove the wire connector to each injector while it's running. If one of them makes no difference THAT is your culprit. Let me know please!

catylac converter

Replace the ECT sensor.
And letme know. If you feel any diference. ok.

this trucks have very coming problem with the injectors stuck open or close, and some times they just works great and some does not, dealer has an updated injector assembly, i recomend you to install this update and spark plugs and plug wires, if you had replace plugs and wires recently just redo the spark plugs with the injectors