[Hottrod334455]

I am thinking about buying a 4x4 mud toy, but when I went to test drive it I couldn't get it to shift but one time, we were thinking it could be the floor shifter since they made it from the steering column to floor shifter, it has automatic tranny, but i don't know why It wont shift more than once. Anyone help me out? Thanks, Jake.

[sqzbox]

Could be a bad modulator. Check the vacuum line from the engine all the way to the modulator and make sure it's all good. If it is, pull the vacuum line off the modulator and if any trans fluid comes out of the vacuum line, the modulator is bad. With an off road truck, sometimes the line get's knocked off
from mud build up on the vacuum line. Easy check!

[Hottrod334455]

He thanks for that, but I do have another question, bear with me since I have never messed with cars before, were is the modulator located? is that vacuum line the one from the back of the engine to the tranny? Thanks for your help, Jacob.

[sqzbox]

Yes. the modulator is located on the passenger side of the tranny just above the rear of the fluid pan. If you look at it from the pass. side the small vacuum port on the left (end) is where the hose connects to.