The modulator was replaced, and now it won't shift.

[mark cole]

ok so ive got a 94 explorer i was getting a transmission fluid in my engine. i thought to my self thats not possible but guess what it is lol so turns out the vacuum moglator was bad so i clanged it and now it wont shift out of first gear. FML so i do some more reading and the vac mod is adjustable of so i start adjusting it no change at all any help.

yes it was shifting fine before i changed the part
yes its got transmission fluid in it.
it also shifts hard in to reverse now

 

[BrooklynBay]

Welcome to this forum! Your thread was renamed, and moved into the transmissions & transfer cases section. Did you remember to replace the pin when you installed the new modulator?

 

[974X4BLACKSPORT]

Sounds like the vacuum modulator is not getting vacuum, or the valve is stuck. At low vacuum, or no vacuum like WOT, the modulator moves a valve that raises fluid pressure, and shifts to a lower gear like when passing. Pull the modulator and make sure the valve inside the transmission move freely, and that nothing is blocking vacuum to the diaphragm.

 

[transman304]

Make sure the pin is in there. Easy to miss.