There may be enough differences between 84 and 86 that this info may not help much...
The large red-circled connector is, on mine, a vacuum pipe that runs off and, I believe, connects to the electric vacuum pump under the LF fender. It may also be the main body vacuum feed...
(This part I will confirm tomorrow...)
I am certain that the small red-circled feed is for your air cleaner's thermac valve. Mine has the tap for that ON that larger pipe, and does not have this small one on the back of the throttle-body.
The one off the front I am not very certain about, but, if this is transverse, probably goes up to the firewall to the MAP sensor (flat rectangular thing) and lets it know the state of the vacuum at the inlet...
Hope that helps!:thumbsup:
The large red-circled connector is, on mine, a vacuum pipe that runs off and, I believe, connects to the electric vacuum pump under the LF fender. It may also be the main body vacuum feed...
(This part I will confirm tomorrow...)
I am certain that the small red-circled feed is for your air cleaner's thermac valve. Mine has the tap for that ON that larger pipe, and does not have this small one on the back of the throttle-body.
The one off the front I am not very certain about, but, if this is transverse, probably goes up to the firewall to the MAP sensor (flat rectangular thing) and lets it know the state of the vacuum at the inlet...
Hope that helps!:thumbsup: