Hello I have a 2002 ranger. I have 2 vacume hoses (gray and black) coming from my fire wall. Gray one is conected hvac heater valve and the black one is just sitting there unconnected due to missing hvac Reservoir. I know the black one will connect to the Reservoir but he Reservoir has 2 entries. We're would I find the second line that goes there. I did locate a red vacume line coming out of the intake. Would this be it. If not what does the red line connect to. Attached are pictures for refrence. Sorry one more question. I attached a picture with a part circled in blue. It seems that part is upside down based on other engine pictures on line. If I turn it over the curved part would be facing the wrong direction. Can these just be eliminated. Thanks for any help.

 

Welcome to the forum

There should be a vacuum hose diagram on the Rad support, but it often doesn't have Vacuum Reservoir on it since it is not an emissions system

Standard vacuum for cab vent control
Intake(vacuum port)----------check valve-----------reservoir-------------------------into cab at firewall

If you have a disconnected full time vacuum hose then it probably connected to an inline check valve and that connected to reservoir
If you have a EGR system then you could have had a "T" check valve, one hose to reservoir and the other to EGR solenoid(not EGR valve), so both have stable vacuum regardless of engine RPMs


You can connect the black hose from firewall directly to engine vacuum, and Vent controls will work until you accelerate(vacuum level drops) then it will switch to Defrost vent, then once at cruising speed vent control will return
Obviously vacuum reservoir would be better but some control is better than no control, lol

Last picture looks like a 2.3l Durarec engine and that would be the Resonator/muffler for the intake air, quiets it down