Originally Posted by Grant Francis

Found some of my early day scribblings for the D Jetronic system.

MAP testing:

Term 7 & 15 = 85.5 to 94.5 ohms.
Term 8 & 10 = 346.5 to 353.5 ohms.
Term 7 or 15 and ground = open circuit.
Term 8 or 10 and ground = open circuit.

All my PreHE had adjustable MAP units, and I remember that spec was market specific. That allen screw was "sealed" with a dob of Yellow paint.

I have not had a MAP that was faulty, most were out of range, and I adjusted that screw by ear with the engine running , and eventually got all those engines running fine.

Fuel pressure was a PAIN, and I eventually got 2 pressure gauges, and that made it easier.

One car was sweet at 29psi, the other was sweet at 31psi. The spec is the spec, but the engine knows what it wants.

The 3rd I fitted a HE fuel rail and one FPR, set at 30psi, good as I wanted it.