The 2800 V6 (1975, 4-speed with A/C)has a unit mounted in the front center of the engine where the heater and radiator hose connect. It also has the temp sensor and three vacuum control units. Two of the units have three ports and one has two. I am doing a rebuild after 10 years of sitting in the garage. Anyone know how to test these units. I put them in boiling water to see if they acted differently and nothing changed. Suspect I need more pressure than I can deliver by mouth. I know one of the three port units needs replace since it leaks from the body. BTW the two three port units are different part numbers. D5Z3-A2A and D0AE-E. The two port is D3?E-A7A
Secondary--anyone have a vacuum diagram for a 1975 V6. It would be helpful.
Secondary--anyone have a vacuum diagram for a 1975 V6. It would be helpful.