Does anybody know what is going on!

[Danner717]

When I put it 4 wheel drive all the vents shut off and switch to the defrost and when I switch back to 2 wheel the defrost shuts off and goes back to the vents again. :shrug: Also the 4wheel drive doesn't lock in either!:cursing:

 

[GO BIG OR GO HOME]

Sounds like either your electric vacuum pump has took a dump or you have a vacuum leak somewhere

sent while doing burnouts somewhere in the country

 

[Lassie]

Yep. Vaccuum leak or bad PVH solenoid.

 

[Danner717]

thanks guys