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JavaG66
Well-Known Member
- Joined
- Feb 8, 2008
- Messages
- 56
- City
- South Carolina
- Vehicle Year
- 1986
- Engine
- 2.9 V6
- Transmission
- Automatic
It's the little square box that sits on the right of the intake manifold and gets a pressure signal from the EGR valve. ('86) It has a three wire connector. According to my wiring diagram and meter, I've got a ground (Bk/W), a signal to the ECM (Br/Lg), and another feed from the ECM (O/W - 5v) . How can I bench test this, or verify it is working on the engine? What voltages should I see at which wires at what pressure? On the engine, I get ~3.4 volts on the signal wire that fluctuates a bit when the hose is connected, and a steady 3.3v disconnected, which makes me think it is working. How does it work? Too many questions at once? Thanks for any help...
