Car starts fine in shop at 15C. Put car outside in -20C overnite.
Next morning at -20C , car turns over fine , coughs like it is going to catch then doesn't. Swapped out fuel pump relay with new one, no difference - I could hear the main pump start up and keep running while cranking over.
Replaced plugs, wires, rotor, cap (cap had 3 of the four pins eroded away to almost nothing I don't know how it ran so smooth with the cap like that - also there is oil around the inside rim of old the cap), swapped coil. Squirted some "quick start" into throttle body. Still no start in cold but will start if I bring it into shop and let it warm up. Noticed 3 or 4 very tiny cracks in the intake bellows.


Did get it to start once outside in cold but only after considerable cranking and applying heater to area around exhaust side aimed at distributor and shaking banging the hell out of the fuse/relay board while cranking - go figure.
This after all maintenance mentioned above was performed. It purrs like a kitten when it does get started even in the cold weather.

I checked the wiring harness and it is in suprisingly good shape, no frayed or loose ends.

I am wondering if it is the Hall Sensor...

I am a big fan of the FAQ for 700 series on this site, simply amazing , and have read plenty.

I am know officially pulling my hair out.
--
1985 740 GLE, 1981 245 Ice racers