Very strange errors and problems - please help

[Magicfx1]

Morning All,

I would really love your feed back and input, was having
The throttle forced limited power error code come up
On my Aston Martin Db9. I ran loads of checks, found I
Have no volts going to injector 3, and infinite resistance coming from the coolant sensor, so repaired the connector fault, and replaced the sensor, however
The car will start and then cut out seconds later. None
Of the injectors have a consistent resistance reading, and all are above 17 ohms.

Regards
SG