Still trying to get to the bottom of this problem, lots of advice and experience picked up from this and other forums. Previous owner has already replaced the CHTS x 2, air regulator, fuel filter, fuel pressure regulator, oil pressure sender, dist cap and rotor.

I have been working around the connectors and all so far look clean. Some vacuum pipes have been removed - those to the carbon cannister - which has also been removed. No EGR - is this just a US spec sensor?

Checked the MAF this morning, disconnected it with no difference noted. Positive in that ECU picked up it wasn't working when disconnected.

The ECU changed between 1986/87 models. Does anyone know if they are interchangeable? Looking at differences in the list of error codes, I suspect I have a 86 in my 87 car? Is there anyway of checking the serial number or are there any physical differences?

One thing for to get a mechanic in to look at is the return fuel pipe - understand that a blockage can cause a pressure build up and a stall result?

Any other advice welcome.