check engine code 1223

[ashton]

My car is throwing a check engine code of 1223 the coolant temp sensor code. Im not sure why my car is throwing this code cause I've already replaced the sensor. My car wont start the first time in the morning when I go to start it. And in second gear in wont rev past like 3800. I have an 88 325i with a 173 ecu. Oh and if I drive it for a while and the turn it iff it has probleams starting too.... if you have any info on this problem please help me out. Thanks.

Ashton.

[jlevie]

1223 Coolant Temperature Sensor
Measures the temperature of the coolant inside the engine block. Used
to determine if the engine is warm or cold. Check the wiring and the
expected resistance value of the sensor.

This fault will be a bad ECT sensor, bad engine harness or ECT connector, or bad DME.