Hello to all!
Hopefully some of you guys can help me out as I am very frustrated.
So basically here's what happened. Ran great for the first 200mi, Then after replacing the fuel filter I went on a drive across the country side only to have the disco stall about 45min into the drive. Well After finding the ignition module had a intermittent grounding issue and correcting it it seemed to run great. well the next day almost the same thing happened, so I checked resistance on coil, both primary and secondary, Way out of wack! after letting the disco cool down for a couple hours I rechecked the resistance and it was within spec, so new coil was installed!! Fired up woo hoo, on a test drive to the store We stop to get a soda (about 20 min away) go to start after getting something to drink and nothing, just cranking away! WTF!!!! so after checking the ignition yet again all appears good, as does fuel pressure, so I decide to pull The main fuel pump and injection fuses thinking maybe a contact issue , while the fuses were out I tried to start it fired right up and died, so I put the fuses back and she fired up and drove home just fine.Oh and the relays appear to be cycling properly. ANY IDEAS?????

 

Ignition amplifier module that drives the coil.

 

I have the appropriate voltages, signal, and ohm's on it so it tests good, as do all the grounds . Any other thoughts/ideas? And it is relocated per factory tsb.

 

So I had another thought, are there any know "problem areas" in the wiring harness that may be causing an intermittent short?

 

"rubs" and "skint wires" can happen in many places. Shake the harness. Replace coil?

 

Yes I replaced the coil, It appeared to be suffering from a heat soak type failure.
When cold the primary and secondary windings test good but after a good drive they were really high. I will try to tack a closer look at the harness and do a more extensive wiggle test.

 

Alright so I have it pinned down now, It was a relay was having intermittent problems.
New one and a spare on order, then the Disco is going up forsale. I hate to sell it but parts availability is just to hard to deal with out here in the sticks. Thanks for the help guys!

 

That was fast. How long have you had it, a week and ready to get rid of it?

 

I have had it for about 3weeks, and I was hoping for it to be a good daily driver but with the parts availability in my neck of the woods I unfortunately cannot justify it.