The MAF could be the problem, but I doubt the PCM is.

I think your right-I will try that this week,,I have a source of parts -used-and will see what happens,I dread the thought that the intake manifold gaskets may also be the problem...I had a so-called Ford tech tell me that... he didn't check...and then another told me-maybe the fuel pump...and didn't either.This area is full of experts..hah,,,

Thanks Hanky--will keep you posted, This Van is like new condition-70,000 miles...it's a shame it's making it impossible to do my work///but thats life..

John

After you take care of this little problem, and it is not a disaster, you will look back and wonder how you missed the small item.

Ha !!! Exactly ! It happens frequently in my Refrigeration business...Quite often we say " How did I miss that " Right...
Got to love these cars-truck with EPA inspired designs...

Now I know why you are keeping your "cool" !

HAAAA ! That's it...I ordered a fuel pressure gauge with adaptors...I plan to check the fuel pump while driving and see how it;s performing...


before replacing the Map and PCM I did spray nonflammablebrakecleaner over the upper and lower intake area...no change of engine speed at all..

John

The 4.9s didn't have much problem with intake manifold gaskets , just the Vs.

Thanks Hanky-Thats good to know,,,

Hello Hanky- You were right on ! It was the MAF sensor !!! Never received a code-but you were right,,,Van runs like a big dog..

Thanks a million for all the help..


John

Thanks for the update. Now that you corrected the problem, what are you going to do with all that spare time now? lol