[byron911]

Greg, let me try to summarize:

- This is an engine transplant into an earlier car. So it's not entirely clear if/how the DME relay is wired. On a stock 3.2 the DME relay's first stage switches on when the key is turned to RUN. That powers the DME. The second stage of the DME relay is controlled by the DME and powers the fuel pump and the O2 sensor heater. It gets turned on when the FW is rotating >200RPM or when cranking (+12V to pin 4

I've chased the wiring and believe that the DME relay is connected as per a stock 3.2.
All the Bentley DME troubleshooting checks are OK

- You found a damaged resistor inside the DME related to pin 4. Pin 4 is the input that senses when the engine cranks (key in START) and then turns the 2nd stage of the DME relay on.

The fact that that resistor is damaged means there is most likely more damage related to the DME relay control. The resistor itself won't burn unless the driver is also damaged. A non-working DME relay could explain why your fuel pump isn't running and you have issues.

mmm ok, bad news! But when i jump the fuel pump to a direct 12v supply it runs however I try to start the engine it still won't fire

- You get spark when cranking (tested by grounding a spark plug to the engine
- You get some running when spraying starter fluid into the intake

yep

My advice:

Verify that the ICV is vibrating when the key in RUN or START position. This tells you the DME has power and there is nothing wrong with the aftermarket alarm/immobilizer unit.

Yes, it vibrates. I have removed the immobilizer

Check for fuel pulses with a NOID light while cranking

I don't have a noid light. I've made a test light with a small 3 amp bulb which I'm told should work....it does flash during cranking

Check that the fuel pump is running when cranking. The best method is to measure voltage drop across the fuel pump fuse. Alternatively, you can measure voltage directly at the fuel pump. If all else fails check for fuel pressure. My guess is the fuel pump isn't running and that's why your car doesn't start.

I haven't checked voltage drop, so will do so. I can check pressure tomorrow when i grab an adapter

BTW, the DME can be checked and repaired - let me know if you need help.

Thanks Ingo