[SnakeCharmer]

after driving 2019 CR-V for 20 minutes, and engine is at operating temperature, temperature gauge went to zero, then gauge started moving up and down. anybody having similar problem? What's the cause and how to correct?

Dealer, Brown's Honda City, Glen Burnie MD is clueless to solve

This is normal. The temp gauge on your V does not monitor temps between 0-boiling. It monitors what is classified for this vehicle as a normal temp range while the motor is running. Therefore, it will fluctuate commonly, depending on factors while it is running. For example, if you come to a stop (like at a traffic light) after reaching normal operating temp, the gauge will likely drop. Once you get moving again, it will climb back up. Totally normal. The gauge will fluctuate more in cooler environments than in warm ones.

I find that running the heater will drop the gauge reading as well. Totally normal.

 

[SnakeCharmer]

Not sure what "not monitoring temps between 0-boiling" means.

In the 1960s, for example, car temp gauges read from ice cold to overheating. That's what I meant. Things have changed a lot, especially during the last decade.

 

[SnakeCharmer]

My 2009 Nissan Frontier's temp gauge never moved more than 1 millimeter after it was warmed up, regardless of the inside/outside temp, or if I was running the A/C or heater. This is what many, if not most of us, are used to seeing in a car's temp gauge. This new "running temp range" type gauge stuff is funky. They should go back the old school. It was tried and true. There has been so many changes in the last decade that I basically have to learn about cars all over again and I consider myself to be a hands-on, experienced car guy. ...Not any more!!!

 

[SnakeCharmer]

Been driving since the ‘60s.....never seen a factory temp gauge (with numbers) display below 100F. I’m guessing most factory temp gauges with “C” and “H”, the needle doesn’t move until coolant temp reaches about 100F. Most aftermarket temp gauges start displaying at 100F, not zero.

The Gen 5 1.5L factorygauge is somewhat different, however.......it 1st displays at 130F coolant temp and stops moving at 160F. I’ve observed 215F actual coolant temp, yet the factory needle hasn’t budged from the middle position.

In this case, 0=100. You know what I meant.

The point is, the V's temp gauge is ODD and it's clearly troubling the owners.