Is this the right VMV?

[MuddyGrimes]

On the left, is a picture of the VMV taken out of my 91 Explorer. On the right, is the VMV I bought at the part store. Why do they look different? Wrong Part?

 

[Opera House]

Look the same to me. The adjustment screw allows you to change the shift point a little. Don't set it too high or it might snap the band.

"The modulator works as a throttle position sensor. You must have good vacuum at the transmission, if not it will shift out too hard and high. If you have an adjustable modulator, turn the screw in to make it shift higher at light throttle. Turn the screw out to make it shift lower at light throttle."