Author Topic: Engine Temperature Indicator (Read 2815 times)

Frank_M · **on:** September 29, 2022, 10:39:44 pm

I ran across this video while doing another search (tachometer for Meteor) and found this quite interesting. I'm led to believe from watching it that there may be a way to toggle and display an engine temperature. Since I can't understand what this young man is saying, is there anyone who can shed some light as to whether this can actually be accomplished and how?

https://www.youtube.com/watch?v=sKvkvcjFMfI

Frank_M · **Reply #1 on:** September 30, 2022, 12:24:14 am

I meant to post this along with the original post...

MMRanch · **Reply #2 on:** September 30, 2022, 04:31:52 am

Hi Frank

What bike is that speedometer from ? Its not like my Meteor ...

I like it better than the one on my Meteor . All except for the "Wrench" part ?
The wrench did show up on mine once but I didn't look to see if the "Temp" was showing at the same time. My attention was on making the wrench "go away" which I did.
There is a utube video on how to get rid of it.
Go to trip "B" and do some holding and releasing of the selector button , I'd have to look it up again

Displaying the engine head temp all the time would be nice.

Frank_M · **Reply #3 on:** September 30, 2022, 04:58:42 am

Quote from: MMRanch on September 30, 2022, 04:31:52 am

What bike is that speedometer from ? Its not like my Meteor ...

Displaying the engine head temp all the time would be nice.

According to the video it is a Meteor and appears to be the same as mine, a 2022 Meteor. I went out in the garage to see if mine had the same display as I had really never noticed it, and sure enough when you initially turn the key on, you can see a temperature indicator.

I have attached a picture of my speedometer for comparison. I agree, It would be nice to see an engine temperature indicator all the time, as it certainly "seems" to have the capability!

longstrokeclassic · **Reply #4 on:** September 30, 2022, 10:28:11 am

Surely it’s just a simple warning light for when the engine temperature exceeds a certain level, which means you wouldn’t expect to see it appear except in exceptional circumstances.

michiel · **Reply #5 on:** September 30, 2022, 01:16:55 pm

A warning light looks different. There are even numbers here

longstrokeclassic · **Reply #6 on:** September 30, 2022, 01:48:35 pm

Having now seen the above pic in high res, yes there are numbers present which would indicate something more than a warning light. All I could make out previously was a thermometer icon.

MMRanch · **Reply #7 on:** September 30, 2022, 02:32:45 pm

I'm going to see if mine has it too . Now that I know its available

Dexter · **Reply #8 on:** September 30, 2022, 03:27:14 pm

The graphic in the owners manual for the 2021 Meteor speedo icons does not show a temperature display as one of the things it can show. The 2022 speedo must be different in the icons it can display. Pages 38 and 39 of my North American version of the manual, as they apparently have page differences between regions.

Ivy · **Reply #9 on:** September 30, 2022, 03:54:38 pm

My UK Meteor shows the 88.8 C briefly on switch on but no mention of it in the handbook.

Frank_M · **Reply #10 on:** September 30, 2022, 05:55:11 pm

Quote from: Dexter on September 30, 2022, 03:27:14 pm

The graphic in the owners manual for the 2021 Meteor speedo icons does not show a temperature display as one of the things it can show. The 2022 speedo must be different in the icons it can display. Pages 38 and 39 of my North American version of the manual, as they apparently have page differences between regions.

Looking on pages 38 and 39 of my USA/California manual, the icon and numbers are not displayed either. RE is toying with us? $:-\$

Oscar · **Reply #11 on:** September 30, 2022, 05:56:02 pm

Just checked my handbook for my Meteor fireball blue (manufacture date 23.06.2022) and no mention of it in there, as with others visible briefly upon switch on?

Dexter · **Reply #12 on:** September 30, 2022, 07:00:25 pm

Just another example of the crap manuals that RE puts out for this and probably all of their bikes. I had a look at my 2021 speedo and, sure enough, the temp icon is there initially, but no mention of it in the owners manual.

Of course, we have no idea at what engine temperature it is supposed to come on, so suffice it to say if it does come on, it's time to shut the engine off immediately.

Hitchcock's offers an analog temperature gauge that measures the oil temperature, but it is fitted into the oil filler hole and only measures the oil that splashes onto it, not being actually submerged in the oil, so I don't know how accurate that would be.

Frank_M · **Reply #13 on:** September 30, 2022, 07:15:04 pm

Quote from: Dexter on September 30, 2022, 07:00:25 pm

Hitchcock's offers an analog temperature gauge that measures the oil temperature, but it is fitted into the oil filler hole and only measures the oil that splashes onto it, not being actually submerged in the oil, so I don't know how accurate that would be.

Dexter,

When I was placing an order with Hitchcock's recently I too saw the oil temperature gauge. While it caught my eye with curiosity my first thought was what I was taught a long time ago, you go where you look...so if you look down you are going to go down...and then said to myself, no thank you. I'm not even sure you could see it comfortably if stopped, and like you mentioned, just how accurate it would be. I see it as maybe a conversation accessory.

Frank_M · **Reply #14 on:** October 01, 2022, 02:28:02 am

This sensor certainly has the capability of sending information based on the service manual, and as such should be able to "translate" to the instrument cluster. Either RE engineers have not programmed it sufficiently or they have us "locked out" somehow.

MMRanch · **Reply #15 on:** October 01, 2022, 02:35:50 am

Frank

The first picture reads up to 100mph , the next picture reads up to 120mph as mine and yours does.

oldcolin · **Reply #16 on:** October 01, 2022, 11:16:10 am

My bike is , I assume, a 2021 model even though I bought it in March 2022.

My speedo is the same as the one shown in picture 1, which shows a thermometer and three numbers next to it with a c to the right. It seems it should have the capability to display temperature. If only I could get hold on a good wiring diagram !!!!!

I am sure someone out there should be able to tell us.

Colin

Ivy · **Reply #17 on:** October 01, 2022, 11:33:56 am

Quote from: oldcolin on October 01, 2022, 11:16:10 am

...... If only I could get hold on a good wiring diagram !!!!!

Colin

I hope that attachment helps you.

Ivy · **Reply #18 on:** October 01, 2022, 11:41:09 am

If that attachment does not work try here.
https://www.royalenfield.com/node/assets/WiringManual/code10/J1D-Meteor-350-USA-California.pdf

Zajeb · **Reply #19 on:** January 29, 2023, 08:53:18 am

Hey all, meteor 350 rider here.
Totally understand your thoughts on this, and as someone who works in the HVAC trade, it anoys a bit not knowing a temperature 🤣
According to the wiring diagram, there is a oil temperature sensor installed, and wired to the ECU. This means that the ECU is receiving the info, but I guess they decided not to show it on the speedo.
On one side I can understand since its a air cooled machine and putting a temperature on the display that would be prolly 100+'C would scare ppl. But they should have included ot and said on the manual something like : " in normal conditions the oil temperature should be between XX and XXX degree 'C/F"
Btw thanks for the diagram!!!

michiel · **Reply #20 on:** January 29, 2023, 09:17:40 am

The sensor referred to as the oil temperature sensor actually measures the temperature of the cylinder head

Zajeb · **Reply #21 on:** January 29, 2023, 05:49:20 pm

Quote from: michiel on January 29, 2023, 09:17:40 am

The sensor referred to as the oil temperature sensor actually measures the temperature of the cylinder head

Im sure it's screwed in at a place where it actually touches oil. Based on pictures online it's a pretty long sensor so I would assume it measures oil. I'll check on that myself. Ordered a obd adapter cable and will see what I can get out of the ecu information.

michiel · **Reply #22 on:** January 29, 2023, 06:35:02 pm

I checked it with an OBD scanner.
The temperature rises very quickly. Much faster than the oil can get warm.

Dexter · **Reply #23 on:** January 29, 2023, 07:33:15 pm

Welcome to the forum, Zajeb!

Zajeb · **Reply #24 on:** January 29, 2023, 10:28:46 pm

Thanks for the welcome!

As for the OBD temperature rise quickly, yes because from my understanding it is screwed in the cylinder head and very close to the exhaust, there are oil channels there. EO sensor is on the backflow of oil to the sump. So I'm guessing it is the hottest part of the oil (or is it?!?).

Either way its a shame they didn't put the information on the speedo, especially when it has the LCD symbols installed already!!

I've read on other forums of the check engine light going on with errors P0196 which is related to EO sensor. Again, not knowing what are the normal values for this doesn't help.
Then I've read that they made the lower/top limits of the temperature range too tight and it would register a e.g. start in freezing temperatures it would trigger the check engine light.

Sry if I repeat some topics if they were covered elsewhere.

michiel · **Reply #25 on:** January 30, 2023, 09:00:15 am

I expect an oil temperature sensor to indicate the oil temperature. Usually this is the temperature in the oil tank or in the wet sump of the engine. The operating temperature of oil is approx. 80° Celsius. The OBD device reports temperatures of up to 100° Celsius after a very short time of 1-2 minutes. However, the engine oil is not even warm to the touch.
Therefore, I think that the sensor indicates the cylinder head temperature.

3oro · **Reply #26 on:** January 30, 2023, 09:01:24 am

The oil temperature sensor is used for EFI control. That is why in such a place, the oil temperature in the engine is significantly lower.

michiel · **Reply #27 on:** January 30, 2023, 11:35:03 am

I do not understand the answer

3oro · **Reply #28 on:** January 30, 2023, 01:20:23 pm

The oil temperature sensor is on the engine head, it measures the oil temperature around the exhaust valve. This provides information to the EFI system about the current operating temperature. The oil temperature in the engine itself is much lower. We cannot determine the temperature of the oil in the motorcycle using the oil sensor located on the hottest part of the head. It can be an aftermarket temperature gauge that we saw in one photo or if the factory installs a sensor in the engine block

Zajeb · **Reply #29 on:** January 31, 2023, 06:33:00 am

You are absolutely correct. I remember doing an aftermarket install on my old VW Beetle, where I added a temperature sensor to the oil sump, it was screwed along with the bolt where you change oil, and had a separate "clock" for it.

Back on topic, I wish they enabled the temperature display on the speedo, no matter where it is measuring because we would all understand it better then and adapt. Oh well....

axman88 · **Reply #30 on:** February 05, 2023, 05:47:12 pm

One could always add a thermocouple type sensor under a spark plug. https://www.ebay.com/itm/294653596724

Not as elegant as using the built in sensor and gauge, but there's no arguing that it doesn't measures head temperature.

Placement of the sensor on the RE engines seems like it should give useful readings, unlike those meat thermometers down in the oil sump. I suppose one could figure out a buffer circuit that could tap off and translate the signal from the built in sensor without loading the circuit enough to through off the ECU, but seems like a lot of effort. The factory sensor is a Negative Temperature Coefficient Thermistor?