vacuum modulator valve

I have tried to search for this exact problem, and I either searching wrong or something because I didn't find anything like it, if someone can point me in the right direction or right thread I would appreciate it. So, after looking at where the modulator was I opted to have my mechanic do the...

Help! Had the symptoms of a bad vacuum modulator on 94 Ranger 2WD 3.0 L. Removed and replaced vac mod with adjustable version. Followed the steps from Brooklyn Bay's responses on this site. After everything was back in place, pin and all (plus oil change), we started up the truck. She...

Hello All, I have a 1987 Ford Areostar and I am curious as to how I would know if the Vacuum Modulator Valve on the transmission needs replacing? Over weekend the transmission required me to rev the engine to a high rpm before it would shift from 2nd to 3rd and 3rd to 4th. Fluid levels are...