Did some more tests today:
1. Started up from cold (about 25 degF) no problems, but started to cut-out as usual soon after start-up. If left at idle the cutting out is enough for the engine to stall, but if some revs applied it keeps going.
2. Had fuel pressure gauge connected and there is no drop in fuel pressure when the engine cut's out.
3. Removed MAF plug and restarted, still cuts out in same fashion.
4. Put jumpwire with ground to coil/amp bracket, still same cutting out.
5. Removed temp sensor plug, seemed to improve, but by then it had warmed up enough to stop cut out anyway.
6. Drove a small distance, no issues.
My conclusions:
- Fuel pump, pipes, filter and power to pump is OK.
- MAF is not culprit since cutting out is happening without it connected.
- Coil, amp and their ground is OK
- Still suspects are temp. sensor, ECU and distributor???
I don't seem to be able to locate a "non-ferrous" gauge for the air gap, all shops here just seems to have the normal metal ones.
I will buy a ign. stroboscope tomorrow to connect and see what happens to that when cutting out starts, should be interesting to know if it's a spark problem or injectors either not opening or opening too much.
As far as fuel pressure drop I think I wrote before that it drops to about 20 psi after 30 min. That seems to be within LR spec but of course one or several injectors could still be out of spec.
Thanks!