Rear Air Cleaner Housing - Two plastic Nipple Connections?

[warmblood58]

Still trying to figure out where the two nipples on the back of air cleaner (round plastic dial) removeable from housing by spring clip are connected and what each nipple connects to? One nipple slightly larger than the other -anyone?

[78 WIDETRAC]

I'll post up a pic of the factory air cleaner connections from my 91 and a pic of the springs and a measurement. Did you find the heat stove lines? I know I have some I removed intact. I need to find them though.

[warmblood58]

I'll post up a pic of the factory air cleaner connections from my 91 and a pic of the springs and a measurement. Did you find the heat stove lines? I know I have some I removed intact. I need to find them though.

Thanks so much WIDETRAC! I fabbed a aluminum tube that works but happy to buy your stove line(s) as the aluminum seems a little on the delicate side

[78 WIDETRAC]

Larger line goes to EGR valve.



Smaller line goes to the middle nipple on the front passenger CTO,

[warmblood58]

Larger line goes to EGR valve.



Smaller line goes to the middle nipple on the front passenger CTO,

Youre the best WIdetrac, thank you for all your help today!

[tgreese]

Never mind my previous.


EGR TVS (thermal vacuum switch) - shown here.

[tgreese]

EGR TVS:





TAC TVS:






EGR TVS plug:

[warmblood58]

Thanks Tim - same setup as mine, so larger line to EGR (off larger nipple) and smaller nipple line to dual CTO?

[tgreese]

Thanks Tim - same setup as mine, so larger line to EGR (off larger nipple) and smaller nipple line to dual CTO?

I expect it does not matter. If the diagram or the TSM does not make a point of it, connect it the easiest way. It's just a switch, not polar.