I have a 93 Lincoln TC, 4.6L that is having cold start and cold run issues.
I live in the Phoenix AZ area, so the morning "cold" start is about 90 F.
Most of the time, it will not start, so you have to treat it as a flooded engine...hold the accelerator to the floor and crank till it starts.
It is also stalling out when pulling from a stop for about the first five minutes.
No codes.
My thought is that either (or both) the Engine Coolant Temp Sensor, or the Intake Air Temp Sensor is/are bad. This is faking the PCM into believing that the engine is warm, so the mix is too lean, hence the stalling and hard starting.
Had an '88 Camry that had a similar problem, when it got hot here it was a bear to start "cold". No fix for it, it was a programming problem.
Once warm, the engine is flawless...no misses, nothing!
Any other ideas anyone?
Thanks!