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[zirk]

The 3.5v bit cant see that being right, with the relay open, just remind me is it there with the top plug disconnected.

Why did you swop the relay in the first place.

Whats makes you think the ECU screwed.

When you forced 12v to the gp's does the inlet manifold get slightly warm.

[Agemo]

Right, with the relay open, 3.5 volts, closed 12 volts. With the top plug connected the 12v goes to the plugs.
I swapped the relay because the car took a while to start, when warm. i.e. GPs didn't come in, but would have started sooner if they had.
I think the fault seems to be ECU or sensor, because the voltage is getting to the plugs.
Actually not felt for heat at the manifold, good point.

[zirk]

Ok, without shooting myself in the foot, ECU's are quiet robust but thats not to say its not the ECU.

Think if it was me now would start to concentrate on getting the Engine started and warmed up, nice and warm today, is there plenty of fuel in the tank. pop one of the injector pipes of the top, is it dribbling fuel? etc.

Dont have a TD any more, so cant really do any checks, but if someone can confirm this 3.5v on the GP side of the relay that would be good, cant see why it should be there myself.

Need to shoot back to work, good luck with it.

Chris. 

[Agemo]

OK Chris, thanks. I think the manifold was very slightly warmer, hard to say. Half a tank of fuel, car was running fine yesterday. There is something making it refuse to start. I tested the GPs a couple of months ago, "Cherry Red" after 8 seconds.

[Agemo]

Just realised, there is no engine management light. It does give a slight flicker as I turn the IGN off, same with the GP light.