You are correct. Your car does not have a separate cold start injector.

But that is not Phil's point. Phil is telling you the cold start enrichment is, whether provided by a squirt from a 5th injector, or an extended on time from the 4 service injectors, controlled by the temperature sensor.

When the connector gets cruddy, or the sensor itself begins to fall apart, the circuit opens up. When it is open, the computer sees the engine is very cold. So cold, indeed, the Swedish wildlife hunker down in hibernation. So the injectors pour on the fuel to get some evaporation for a mix rich enough to ignite. Listen to Phil.

This is remarkably easy to check.

However, if you do like most shadetrees do, and try to measure resistance, 9 gets 10 you will (1) fix it temporarily by jostling a loose connection, (2) misdiagnose it trying to connect a meter in a nearly hidden location under the intake manifold, or (3) just give up and swap in a new one (see 1 and 2 above.) Whatever happens, if you are working under the hood, you will get filthy, cold, and frustrated and not know for certain whether you've solved the trouble.

Instead, try this inside the cabin where it is (presumably) clean and warmer. Remove the cover on your ECU's plug. Find the blue wire. It is on pin 2. Connect your multimeter between it and a ground (like the ECU's mounting bracket) with the meter set to measure voltage. Yes, voltage. Turn the key on and measure the voltage at the blue wire with the ECU plugged in.

Doing this verifies the engine coolant temperature sensor and its wiring without disturbing the condition which is causing your rich fuel load.

A high voltage (as approaches 5V) indicates you should replace the ECT and inspect its connector.

A mid-range voltage (2-3V) translates to normal temperatures you'd expect South of the Arctic Circle, and North of the Antarctic Circle.

Voltages under 0.5V indicate the motor is warmed up somewhat.

More precise temperatures can be calculated based on the thermistor's resistance chart and the resistance values of the voltage divider inside the computer, but save this for academics later.

Measure it and let us know what you find. Check the 7/9 FAQ list for more on this simple and easy check.
--
Art Benstein near Baltimore

A man's knowledge can never outweigh his experience.