Originally posted by fairdeal
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F225TXRF250TXR Temperature Indication
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Originally posted by fairdeal View Post
That's looking with YDIS, yes?
Am I correct that Command Link gauges only show "bars" for temp - not numbers?
Do you recall what a CL gauge is showing at around 259 F engine temp?
Got me to thinking now about the temperature output from the ECU. If normal for one motor is say 200* but maybe 230* for a different motor, how does the bar scale know to show mid-range for both motor types, with each having a different temperature?
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Originally posted by rodbolt17 View Postthe 4.2 typically will show around 259* at about 5800.
normal.
Am I correct that Command Link gauges only show "bars" for temp - not numbers?
Do you recall what a CL gauge is showing at around 259 F engine temp?
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big diff twixt the old 3.3 and the later 4.2.
the 4.2 typically will show around 259* at about 5800.
normal.
it is where they located the sensor on the 4.2
not all Yamahas are the same even though the HP plate is the same.
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[QUOTE=Keith Ohanesian;n209878]
225trx or as Rodbolt would call it a 225txrd cause it has the plug for data.[/QUOTE
Sorry f225trx
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Thoughtful consideration Fairdeal. Damn shame that we don’t have some sort of Official Yam Rep participating to confirm your deduction. Yamaha seems surrounded by mystery. Maybe it’s just corporate Japan.
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Originally posted by boscoe99 View PostWhat do you (fairdeal) think of the comments at this post? One guy says that the output is "factored) to represent water temperature. News to me if it is.
But then I am surprised to learn that the SHO (4.2L, yes?) has an overheat alarm point of 302 F.
That's substantially higher than the 3.3 F225, at 248 F.
I'm assuming that since the overheat point is higher, so is the "normal operating temperature"
Now, what is the purpose of the Yamaha "NMEA 2000" output?
to feed a Command Link gauge, right?
which indicates temperature in "bars" between "L" and "H" ?
Yamaha doesn't care about people connecting up their MFDs to "steal" the CL data
If Yamaha has already engineered the CL gauge based on "normal" conditions
and then they come up with a new engine design that runs considerably hotter
is the CL gauge going to pegged on full bars - "H" - when running normally?
isn't that going to upset the owners - seeing their new SHO running maxxed out on "H" temperature?
So maybe its plausible,
that Yamaha programmed the SHO ECM to "adjust" the temp value that its outputs for Command Link
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Originally posted by boscoe99 View Post
What model motor?
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Mine runs 160 *****ing, 180 around 4500 and 200 at 5500. Thats from my Simrad that doesn't give me a depth reading.
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What do you (fairdeal) think of the comments at this post? One guy says that the output is "factored) to represent water temperature. News to me if it is.
http://www.bbcboards.net/showthread.php?t=926521
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Good morning, Boscoe
I have never seen the N2K value on the Garmin not match YDIS -
(excepting that YDIS displays tenths and the Garmin round degrees)
However, I have not compared it on many occasions.
"normal" operating temp for my F225TRD is "around" 180 F when running between 3800-4000 rpms.
Lower - down to ~160 F - at idle and when *****ing at 1600-1800
I rarely go over 4200 rpms, and am usually alone in the boat,
but I've noticed temp will rise over 4500 rpms
The highest I've ever seen was 205 F
that was with four souls on board, and a few miles sustained running at ~4500 rpms
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