It's about 57-59 degrees here.
Throttle valve switch checks were oke.
Resistance between terminals at temperature sensor:
58 --> 3.1kOhm
(58 --> 3.95 kOhm pin13 at ECU to ground)
68 --> 2.66kOhm
136 --> 0.58 kOhm
(136 --> 1.43 kOhm at pin 13 ECU to body ground)
176 --> 0.29 kOhm
I also measured the coil resistance:
Primary resistance: 1.9 Ohms (between outer terminals of coil, without it being connected. That's a bit high, is that a concern?)
Secondary resistance: 11.97 kOhms
What is the 12 Start signal to ECU?
I adjusted it to 15 degr BTDC --> 13/14 Hgin cold and 17 Hgin warm (so no change it seems)
I never adjusted the valve lash, I don't think I have the skills to do that, but if it might be the problem I could go to a garage.
The car did start at 1000 rpm, I adjusted the timing, in 5 min or so it dropped to 800 rpm and then raised to about 1000 rpm when completely warm, so that is better than before, but still a bit strange. I adjusted the idle when warm to 800 via the idle adjustment screw, and will see next weekend how it starts when it's cooled down again.