hour meter????

[dstktmusa]

playing around with my Z71 with the key off, I could push the trip reset button and the milage would appear. If i held the button a "hr 138.5" would appear. at first i thought is was an hour meter but after a 3 hour drive it still said 138.5. any ideas???

[LarryE]

its the engine hour meter..  not how long you drive...  engine hours are measure different that time or mileage...

 

you can drive a long time and not reach a full hour on the hour meter

[sport48]

It is my understanding that the hour meter represents the hours that the engine has spent running. It allows those fleet and commercial operators who often operate in stop-and-go traffic or leave their engines idling for extensive periods of time to calculate a more precise servicing schedule.

 

As long as the engine was running for the entire 3 hours trip, then it should have logged three hours run time.

Sport48

[dstktmusa]

I drove for an hour and a half straight for 2 times and the hour meter didn't add a single 10th. This is why I wonder if it's an hour meter or not.

[Guest]

Its for sure an hour meter.. Why else would that advertise it as that? Must be some kinda glitch in yours.. Mine works fine

[SilveradoWV]

I think mine works as one would think, I have never really checked it for accuracy though!!

[ClipperSkipper]

Maybe they work more like "Tach hours", as in small aircraft.

If you fly a Cessna 172 for 1.0 hrs on the Hobbs meter, which runs off oil pressure, you usually log around .6 or .7 on the tach. The 172 engine (Lycoming O-320) fetches up at 2700 rpm, with a 2300 or so rpm cruise. Your 5.3 fetches up at 5000 rpm, but at 70 mph your only turning around 1900 rpm.

Just a thought.

 

Have a great one!