GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat

GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat (https://www.gmforum.com/)
-   1987-1991 (https://www.gmforum.com/1987-1991-93/)
-   -   In need of vacuum (https://www.gmforum.com/1987-1991-93/need-vacuum-213385/)

1992 trofeo Feb 26, 2005 11:51 PM

In need of vacuum
 
vacuum diagram anyone? Im tryin to figure out where the damn lines run to. (off the vacuum ball)

theJMFC Feb 27, 2005 04:33 AM

Isn't there a vacuum diagram sticker under the hood somewhere? Or am I thinking of our other car?

padgett Feb 27, 2005 12:27 PM

You have to look several places in the service manual for vaccuum diagrams, the major users are the HVAC and cruise control systems. If your local library has a set of Mitchell Manuals I think they have sets of just vaccuum diagrams.

1992 trofeo Feb 27, 2005 01:20 PM

no theres one to the transmission control and throttlebody which are both cracked and broken, but I cant see where they meet up.

opensourceguy Feb 27, 2005 03:57 PM

They meet up on the TB.. a vacuum distribution block.. has four ports [one blocked off if TEVES Braking System equiped], another to the cabin for the A/C vent thing, another to the Vacuum Modulator, and one more to the Charcoal Canister. We are talking about an LN3, right?


-justin


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