Inaccurate Gages - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 17 Old 05-21-2014, 09:45 PM Thread Starter
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Inaccurate Gages

One thing I am really disappointed in with my new V2 is the inaccuracy of the speedometer and the air temperature gage. I understand the stupid reasoning of following the dang lawyers by overstating the speedometer (although I strongly disagree) but the air temperature gage I don't understand. My air temperature gage is a good 6F over the actual temperatures and I have checked it against posted temperatures and against gages on bikes I have had a great deal of experience with and know they are very close. How hard is it to make an accurate temperature gage? Mine is worthless and a total waste. I guess I'll have to go buy a cheap one that works, from Walmart, and stick it on the bike.

I don't suppose there is any way to fix the gage?

Maybe the Suzuki lawyers think that if they tell us it is warm outside, we won't actually freeze to death and they can avoid a law suit!
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post #2 of 17 Old 05-21-2014, 09:51 PM
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Re the gauge, if it is the intake air temp it might be ordinarily warmer than actual air temp. In which case, why bother showing it? This was how it worked on my Buell. Waste of time. Only the ecu needs to know that to compensate fuel adjustment. Does it decrease in temp the faster you go and then rocket up if you have to stop, say at the lights?

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post #3 of 17 Old 05-21-2014, 11:18 PM
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The intake air temperature is the air temp above the road surface, so it will not be the same as air temperatures measured at other locations. Expect high variability - that is why it is a major input to the fuel admission calculation. The IAT input drives the dash guage.

JohnB

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post #4 of 17 Old 05-22-2014, 12:58 AM
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Quote:
Originally Posted by Hellcat View Post
The IAT input drives the dash gauge.
That's highly unlikely. The intake air temperature sensor is part of the fuel injection system. It's way more likely the Vee2 has an ambient air temperature sensor like the Glee does.

Pat- 2007 DL650A was ridden to all 48 contiguous states. I didn't quite make it to 17,000 miles on the 2012 DL650A.
Nicknames I use to lessen typing, Vee = 2002-2012 DL1000s. Vee2=2014-2016 DL1000s. Wee = 2004-2011 DL650s. Glee = 2012-2016 DL650s
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post #5 of 17 Old 05-22-2014, 02:20 AM
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First of all, isn't the faulty temperature a warranty issue (it was on some pickups I know and got a fix). Second, locate the temperature sensor, it may be inside a fairing that seeing other heat from the rad or engine, as one of my bikes does. Perhaps it can be moved to where you know there is ambient airflow or perhaps run a piece of tubing to it that will direct ambient air there.

Can't help you with the speedo..... don't know if it's a legal thing or not, as most bikes have this 'error' factor to compensate for possible tires you might mount..... I hear the new Super Tenere is quite accurate.
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post #6 of 17 Old 05-22-2014, 02:20 AM
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Quote:
Originally Posted by Hellcat View Post
The IAT input drives the dash guage.
That is how it is fitted on the Buell.

Can't see the point really?

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post #7 of 17 Old 05-22-2014, 01:12 PM
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It states directly in the manual to drive the bike for stated amount of time before reading the temp, it is not faulty, you just did not read the instructions.....

Mine is very accurate after riding for 5 minutes or so.
The spedo on the other hand.....

Yeeeehaaaaaw!
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post #8 of 17 Old 05-22-2014, 01:17 PM
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mine is highly accurate, it reads sometime 100+ after a ride and sitting in the hot garage but after riding a few miles back to normal, read the manual, clearly indicated.
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post #9 of 17 Old 05-22-2014, 02:36 PM
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post #10 of 17 Old 05-22-2014, 02:45 PM
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I fixed the speedo on my Glee w/ a SpeedoDRD. Easy install and you can adjust the speedo input as needed. Speedos that read high are common on motorcycles. 6-8% high is the usual.

Current: '12 Dl650, '06 ST1300, '89 Transalp, '84 XL350R, '07 TRX350TM,
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