Silver Rose

The Mellium Falcon has had an intermittent no start problem for some time, but it is finnally doing it consitant.
In the past I have installed new crank ref sensors and even swaped a used DME. No help.
Currently it will crank no start. The tach jumps, but the coil is not getting signal. It has new ref sensor (as indicated by the tack jumping) and the orginal DME.
My current thoughts are to ohm the wire from the DME to the coil. If that is ok then try swaping a used DME again. Any other ideas????

mudbuddha

Have you checked fuel system? Not an expert here but thought I'd mention it...

Silver Rose

I have not delt with the fuel yet, at this point I am sure that there is no spark so I have not gone any further on fuel.

PorscheDoc

I realize there is tach bounce, but have you jumped the DME relay and tried?

Silver Rose

Very intersting. I used a noid light and injectors were getting signal. I then jumpered the main relay (used paper to hold the contacts closed) and it started.

If it is only a relay then sweet, Cheep fix and the next beer is on me Carl!!

But, I am confused as to how I could have power through the main relay enough to have injector pulse but not spark???

PorscheDoc

Magic.........DME relay is only about 25 bucks, just make sure to get the strabilus/kaehler (sp?) one and not the URO one (those suck)