Got the vacuum canister today. Works like a champ. Thanks alot!!!!!
For lucas3397, my truck didn't come with the canister type. It had a small
check valve about the size of a quarter with nipples on each side. It was located
inline next to the dryer. Hope this helps.

 

Alrighty then I'll check it out. Thanks

 

yeah nobodys trk came with it it was released later as a tsb

 

Ok mine is fixed! I replaced the check valves as they were weak & not holding a vaccum but the big problemwas that the vaccum cap that I plugged the 4x4 system with after installing the Posi-lok went missing & that is where the vaccum was bleeding offon acceleration which is when the a/c doors wouldswitch. The a/c is way colder now because I think that it was not having enoughvaccum to work all of the doors involved when the a/c is on. Now I hear the doors all snap shut which I never heard before, even before disconnecting the vaccum for the 4x4 posi-lok conversion.

[8D]

 

with it being a 4X4. i had the same problem.. took me a hell of a time tracking it down but i found the hard vacume lines comeing from the t-case to the front CAD/axle.. on a small section of the bends ,,these hard lines were rotted through.. you can get prebent ones from the dealer for pretty cheep.. i think less the 50 bones

 

I capped the vac off for the 4x4 system at the "T" that goes to the a/c & 4x4 so that there is no vaccum in the lines at all. Since I removed the cad & do not use the system I figured there was no reason to have vaccum in the lines at all but it is nice to know that the lines are not that expensive ;-)

 

There is a vaccum line under the battery. Sometimes acid will leak down on it and cuase a leak. Check it out.

 

Under the battery? what the hell does that one go to?

 

It's for the cruise control.