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Thanks for the add 1st off. I'm a new vette owner of a 16 Z06. Its has 37k on it. And I'm trying to google and research about this rev limiter. And the only thing Im finding is qbout cars with 500 or less miles. I've added a picture for reference. Does the ring on the outside of the tach only show when the engine or tranny is cold. Because I notice it randomly comes and goes(as far as the yellow and orange areas). Any information would be useful and appreciated.
It should only come on when the engine isn't warmed up to proper temp. What does your engine temp show? After you drive it long enough to warm up and the rev limiter disappears and then comes back on check the engine temp. May be something wrong with the thermostat.
Last edited by joemessman; Jan 24, 2022 at 08:21 AM.
I always plan my morning coffee-run drives so I'm sitting in a left turn pocket at the light, typically for a couple minutes. A nice way to let the temps come up.
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When doing a cold start, the ring will show up. As the engine warms, you will notice that the yellow bars will slowly decrease to the right and when the engine gets warm enough, the ring will disappear.
Thank you all. Yes it's been cold down south here in the 30s. And the eng temps been sitting about 150-160 daily. So that could be it. Sorry just new to this area.
The manual is hardly a page turner but there are lots of valuable nuggets of information buried in the text. There are lots of ins and outs to the dash displays that you can play around with like trans temp, horsepower, tire temp, tire pressure, G meter and not to mention programming the exhaust, suspension and steering. Don’t miss out on the fun stuff, the manual is your friend.
There are also plenty of youtube videos out there for the stuff mentioned above.....
I didn't even drive my new to me vette yet - really, winter here, but I have watched **** tons of videos that go well into detail about the hidden adjustments for the C7's.... https://www.youtube.com/results?sear...idden+features
My understanding is that the "floating" yellow & red arcs are not a rev limiter, the driver is simply expected to obey them.
There is a real rev limiter at the fixed red line only.
The floating arcs appear to be controlled by coolant temperature. I suppose that's better than nothing, but in really cold weather the floating arcs can disappear completely when the oil temperature has barely come off the peg. I keep oil pressure and oil temperature displayed in the little pocket gauges, and don't go full throttle until the oil reaches 160'F.
Thank you all. Yes it's been cold down south here in the 30s. And the eng temps been sitting about 150-160 daily. So that could be it. Sorry just new to this area.
Thank you much
I want to go back to the OP saying the engine temps are running 150-160 degrees. Running temps should be in the 200-220 range. Maybe a previous owner changed to a 160 thermostat? I don't believe there is any benefit to running that low. (???)
I want to go back to the OP saying the engine temps are running 150-160 degrees. Running temps should be in the 200-220 range. Maybe a previous owner changed to a 160 thermostat? I don't believe there is any benefit to running that low. (???)
On our dry sump (Z51), oil temp takes a lot longer to stabilize in cold temps than coolant temp, but eventually both of them settle around 190
Thanks for the add 1st off. I'm a new vette owner of a 16 Z06. Its has 37k on it. And I'm trying to google and research about this rev limiter. And the only thing Im finding is qbout cars with 500 or less miles. I've added a picture for reference. Does the ring on the outside of the tach only show when the engine or tranny is cold. Because I notice it randomly comes and goes(as far as the yellow and orange areas). Any information would be useful and appreciated.
It should only come on when the engine isn't warmed up to proper temp. What does your engine temp show? After you drive it long enough to warm up and the rev limiter disappears and then comes back on check the engine temp. May be something wrong with the thermostat.
Yup.
If you're seeing the ring come back after driving the car for an extended period of time then you probably have an issue with the thermostat. My car was taking a long time for the oil temperature to warm up and I'd notice the RPM ring coming back even after driving for 30+ minutes on the highway. I changed my thermostat (after two dealers did not find a problem) and the issue went away entirely. I no longer see the RPM ring return after the car has warmed up.
The yellow and red lines are not rev limiter lines. The yellow line means the engine is not warmed up yet and is a suggestion not to exceed engine revs past where the line shows. The red line indicates danger if revs exceed into that area. The rev limiter will actually not allow revs go to beyond a level which will cause engine damage. I have heard a couple hit the rev limiter in their Corvette, which is not a good thing.
The yellow and red lines are not rev limiter lines. The yellow line means the engine is not warmed up yet and is a suggestion not to exceed engine revs past where the line shows. The red line indicates danger if revs exceed into that area. The rev limiter will actually not allow revs go to beyond a level which will cause engine damage. I have heard a couple hit the rev limiter in their Corvette, which is not a good thing.
It is also not a terrible thing to hit the actual rev limiter. Over the 6 years, I have had my C7Z I have hit the rev limiter many times when on track. It usually happens when I am coming off a slow corner onto a long straight and I have the transmission in 2nd gear and I am waiting for slower cars to move to the right and provide a point by. Even with the HUD, it is easy to hit the rev limiter as you are picking up speed while waiting for 3 or 4 cars to sort themselves out and to decide which side of the track they want to be on. Until I know what they are doing I focus on them Vs the tach.
If you're seeing the ring come back after driving the car for an extended period of time then you probably have an issue with the thermostat. My car was taking a long time for the oil temperature to warm up and I'd notice the RPM ring coming back even after driving for 30+ minutes on the highway. I changed my thermostat (after two dealers did not find a problem) and the issue went away entirely. I no longer see the RPM ring return after the car has warmed up.
This is actually happening to me right now but had no idea what was going on, great to know that it's nothing serious.
If you're seeing the ring come back after driving the car for an extended period of time then you probably have an issue with the thermostat. My car was taking a long time for the oil temperature to warm up and I'd notice the RPM ring coming back even after driving for 30+ minutes on the highway. I changed my thermostat (after two dealers did not find a problem) and the issue went away entirely. I no longer see the RPM ring return after the car has warmed up.
I'm looking into this as week speak. Thank you all for the input.
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Question New Vette Owner
