I would look at the water temperature probe, in this engine I do not know, but it is usually in the butt, near the exit of the thermostat, (not to confuse with the radiator probe). When it is damaged, these symptoms usually give, because it exercises as if it were a starter, it can be measured but its resistance is variable with the temperature, here I have no data of its values, it measures its resistance and then heated the bulb with a lighter, if it does not vary its resistance, it is defective. I hope it helps you, greetings.