HI All,
I haven't been here in a long time but I have been gradually working on my 76 280z. Lots of new parts including all new injectors (this car came to me in pieces and with some missing pieces, including the entire exhaust system). Anyway, it runs but runs rough when cold, not bad when warm but still seems like it should be smoother. I was running through some of the resistance checks in the EFI manual. I had suspected the air/water temp sensors because it is running pretty well when warmed up but those checked out OK, at least the cold measurments did. Anyway, I was surprised to find problems when checking the AFM as it looks like the guts are new. Here is what I am getting:
Pins 6/8 - 230 ohms. Good, I think (spec says approx 180 ohms)
Pins 7/8 - open. Out of spec, should be "small resistance"
Pins 8/9 - 120 Ohms. Good (manual says "approximately 100 ohms).
Pins 7/8 - Voltage tests seem OK as I vary the opening of the flap. No Jumps. Good.
Pins 36/39 - Continuity always. Out of spec but I don't think this matters.
6/7/8/9 to body all open. Good.
Given that it runs pretty well when warm, are the out of spec measurements of any consequence here? It seems like the pins 7/8 being open are the only really problematic issue but I have no idea if this is really a problem.
The AFM looks like someone put a kit into it or something. The little board in there looks brand new could it have been installed incorrectly?
Let me know if you have any suggestions.
Thanks,
Dan
Here she is: