Car won't fire on cold mornings

One more thing - testing MUST be performed BEFORE attempting to start COLD engine - key on engine OFF.. IF more help is needed you can reply here.

The 2000 4.3 only has 1 sensor. Even looking up coolant temp sensor I just see that one and only part that threads into the block on the driver's side. The older models had 2 sensors but not my gen.

Testing remains the same and is recommended. COLD engine CTS scanner reading must match ambient temperature. **TESTING** is the key!

IF CTS displays ambient temperature on COLD engine - fuel pressure testing and TPS readings should be viewed - regardless of assumptions.. Mike no mistake - COLD temperatures can affect electrical components and there circuits. Askew TPS reading at closed throttle can trigger clear flood = no injector pulse.. Fuel pump pressures can also be affected by extremely cold weather. Any moisture within fuel system will freeze - especially fuel filter. What it boils down to here is *hands-on* TESTING preferably with the aid of a quality scan tool. GOOD LUCK!