Quick question. Searched but didn't find the answer.

I have a 94 F150 5.0. If it has a MAF does it not have a MAP? Trying to solve my rough idle/stalling problem.

 

Im 90% sure they are basically the same thing, you only have one. MAF=mass air flow MAP=manifold something pressure? believe they work the same though.

 

Well no.. they don't work the same but Brett is right a truck will only have one or the other. Are there any codes present?

 

MAP: Manifold Absolute Pressure

 

@ conan--They do the same job basically right?

 

Well.. lets just say they're related. The MAP sensor measures manifold vacuum and that's the only input an SD computer has to indicate engine load. The MAF sensor measures incoming air mass and the computer calculates load using that input but it also uses the measured air mass directly for other things.