Well I went to a salvage yard today and picked up a manifold for $20. Think I'm going to save a little extra cash and splurge for the Thorly trial y's. Also picked up some more goodies while I was there. Got all the a/c duct, nice shiny t case shift assembly and new a looking a/c control unit...
I noticed last night that my right exhaust manifold is cracked and was thinking about replacing them with a set of headers. Anyone have any suggestions on who makes a decent set. I still have all the smog crap hooked up and was planning on keeping it unless there's a real benefit to getting rid...
I had a CJ7 that did this to me. Turned out there was a wire from the switch to motor that was broke. So I would think it is a switch problem or bad connection from switch to motor. I have an 87 with column switch I'll take a look at it tonight and see if I can tell witch wire controles the park...
When selector switch is in a/c position you should have vacuum on the brown line. That is where I would start checking for leaks. However if there is no change in airflow no matter what position selector is in
Defrost, a/c, heat etc. You may have a leak in the main vacuum line (grey one).
Yeah sounds logical to me. I pulled the vacuum switch out of my control unit and disassembled it to try and make sense of the whole vacuum mess. There is a rubber disk with a maze of groves cut in it that sits against the plastic manifold that your vacuum lines all connect to. On mine the rubber...
Switch position dictates vacuum on these lines. Off -blue,max-brown&orange, norm-brown, bi level-none, vent-brown, heat (floor)-blue, defrost-blue&black. I hope this helps someone out along the way.
Last one is the solid black. It connects to the actuator located on the left side of the unit. Just left of the floor air outlet. This damper switches air from floor to defrost.
Next are the brown and blue lines. These run to an actuator located on the back side of the unit and I don't think you can even get to it while its installed in the truck. This actuator operates the damper that switches from vents to floor/defrost. The blue connects to the nipple on the side of...
OK I figured it out. It took taking the entire unit out of thej truck to diagnos how everything works, or in my case didn't work. But it was all full of leaves and dirt so it needed to be cleaned out anyways. Being I found no documented info on how this stuff hooks up I figured I'd let y'all...