Actually I do experince some of the problems you mentioned.

- Engine won't start (No)
- Difficult to start engine (At times)
- Rough idle (At times)
- Misfire or rough running (No)
- Loss of power (No)
- Frequent stalling while warming up (No)
- Frequent stalling after warming up (No)

I will try what you recommended....

Is there a code that indicates a coolant gauge malfunction....