TonyB66
New member
If you are willing to buy a used, well cared for SG2, I have one. I believe I have an extra cable also. Makes it easy to use on two different rides. I'm about to post in Craigslist actually... $100.
3rd Gen Scangauge II Owners!
- Thread starter tannerc
- Start date
If you are willing to buy a used, well cared for SG2, I have one. I believe I have an extra cable also. Makes it easy to use on two different rides. I'm about to post in Craigslist actually... $100.
brillo_76
Elite Member
The answer is yes. I have a bluetooth obd II called OBDLINK and the Torque Pro app.
You can monitor just about anything you have a PID for.
I use this in place of a scangauge2
One of my screens as an example.
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Can you input the Transmission Temperature codes as discussed and get a reading?
brillo_76
Elite Member
I believe it has to be a 99 or higher for the transmission temp to be there.
My 98 will not register a transmission temp.
I wanted to look at the circuit and see if it's just an idiot light that triggers at a temperature on the dash of pre 99. Or its there and the PID just hasn't been found.
I just didn't have time to dig into it any further yet.
Somethings are just not there before the communion bus when they switched to newer standards..
I never looked at the Toyota software to see what's all available either.
However, I have a 01 and I can plug my bluetooth reader in it and see if it reads the transmission temperature. I just probably wont get to that for a few weeks.
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19963.4lsr5
New member
I believe it has to be a 99 or higher for the transmission temp to be there.
My 98 will not register a transmission temp.
I wanted to look at the circuit and see if it's just an idiot light that triggers at a temperature on the dash of pre 99. Or its there and the PID just hasn't been found.
I just didn't have time to dig into it any further yet.
Somethings are just not there before the communion bus when they switched to newer standards..
I never looked at the Toyota software to see what's all available either.
However, I have a 01 and I can plug my bluetooth reader in it and see if it reads the transmission temperature. I just probably wont get to that for a few weeks.
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The 96 to 98 trans temp inputs to the ECU and the ECU controls the light for trans temp.
I tried every memory location from 00 to FF and it never returned anything close to a valid number associated with my trans temp at the time I was searching for it.
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brillo_76
Elite Member
If the ECU controls that idiot light. We should be able to find it.
Being how Toyota is, we may have to see if it's in their software and work backwards.
It could just be a resistance value for the transmission temperature or even a voltage range. Something in the ECU is triggering our temp idiot lights. The trick is going to be figuring out what.
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4Runner4Leon
Senior Member
They do, e.g. the Torque Pro is a superb app. But they come at a price of always tying up your phone (or whatever else you use to display the app). I tried running the Torque Pro app for a while, and while I liked the display, I found that I didn't like tying my phone up all the time. Plus I had to manually turn on the app every time I started the truck, so I ended up never running it unless I was trying to diagnose something.
The nice thing about the Scangauge or Ultragauge is that they are dedicated devices, and come on as soon as your truck is on (and go to sleep when the truck is off).
brillo_76
Elite Member
I can see that being a problem. Starting and stopping the application. My plan to tackle this is to replace the head unit with and android based one. That way I can set the app to launch when the radio is powered on. This will eliminate the need to use a cell phone or tablet seperate.
Plus I will be able to put more gauges on my screen space.
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4Runner4Leon
Senior Member
I can see that being a problem. Starting and stopping the application. My plan to tackle this is to replace the head unit with and android based one. That way I can set the app to launch when the radio is powered on. This will eliminate the need to use a cell phone or tablet seperate.
Plus I will be able to put more gauges on my screen space.
That's a good option, I looked into it as well! One thing to beware of though is that you'll need to take your eyes off the road to look at the display. I have a trans temp gauge mounted in that vicinity, and I find it scary having to look that far down to see the temp, too much can happen in a split second at 60 mph.
brillo_76
Elite Member
I plan on just setting the limits for the alarms. So they let me know something getting warm. It's on my list after everything else is fixed. So maybe a few years.
That way you can glace at the low and max. When in a parking lot or stop light.
I am after one for reverse Camara too. Comes in handy and the radios will do that.
Well we always have the transmission idiot light. In the mean time.
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FYI...got the OBDLink MX+...
https://www.amazon.com/gp/product/B07JFRFJG6/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
After registering it, it asked if I wanted a free extended data pack or something...and I told it my car and it downloaded it. It had the Automatic Transmission temperature PID in it! And now I have a gauge on my Android phone app that shows the Automatic Transmission temp!
-Mike
https://www.amazon.com/gp/product/B07JFRFJG6/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
After registering it, it asked if I wanted a free extended data pack or something...and I told it my car and it downloaded it. It had the Automatic Transmission temperature PID in it! And now I have a gauge on my Android phone app that shows the Automatic Transmission temp!
-Mike
brillo_76
Elite Member
99 and up all can read the transmission temp. It's the 96 thru 98 that don't have a PID for it and we been trying to find an indirect way of measuring it.
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mesooohoppy
New member
someone suggest i look into this gauge in my build thread, as i was told you just plug this into your OBD port and go. although i dont think that is the case. can someone help me with some questions i have?
i put in 3rd gen 4runner, 1999, and this is what i get:
>> X-Gauge Categories >> ISO – VPW
-im assuming i have to wire this in to power the main unit. is there a how to? i didnt see anything in the OP and google didnt pick anything up.
-there are no mention of a temp gauage for trans temps? does this monitor trans temps?
-What do the 'TXD', 'RXF', 'RXD', and 'MTH' acronyms mean on the link?
-is there a reason why when i click the red links there are no pictures of anything??
i honestly dont think i will be able to figure this out on my own as i cant get past stuff like this.. very confused!
i put in 3rd gen 4runner, 1999, and this is what i get:
>> X-Gauge Categories >> ISO – VPW
-im assuming i have to wire this in to power the main unit. is there a how to? i didnt see anything in the OP and google didnt pick anything up.
-there are no mention of a temp gauage for trans temps? does this monitor trans temps?
-What do the 'TXD', 'RXF', 'RXD', and 'MTH' acronyms mean on the link?
-is there a reason why when i click the red links there are no pictures of anything??
i honestly dont think i will be able to figure this out on my own as i cant get past stuff like this.. very confused!
phattyduck
Elite Member
The Scangauge II does just plug into the OBD-II port. The port has power, ground and signal wires to communicate with the engine ECU.
The TXD/RXF/RXD/MTH are references to labels on the screen in the Scangauge when you are adding "x-gauges"
TXD - Transmitted data
RXF - Received filter
RXD - Received data
MTH - Math
The specifics don't really matter though, unless you are trying to find new data to display. If you want to display something that somebody else has figured out (say, transmission temp on a '99+) you just need to enter the numbers/letters in the correct field in the Scangauge and it will then appear as a selectable option in the main gauge screen.
-Charlie
mesooohoppy
New member
thank you for your help. i saw you posted in my build thread but i will just reply here. so is the reason why when i click the red links there arent any pics because its a code?
if so, how come i dont see a trans temp code for 4runner when i click the link i posted earlier? do you have to pick a different car? if this installs just like that and i can figure out how to 'program it', i will likely go this route as it seems a lot easier than trying to wire a temp gauge in. it also doesnt seem that much more $$ than some of the auto meter gauges i was looking at.
phattyduck
Elite Member
Yeah, its just four hexidecimal numbers and a three character name. You just navigate the menus on the Scangauge and set the numbers to match the 'gauge' you want to add.
This is the code that works on my 4Runner:
Transmission Temperature F:
TXD: 686AF101B4
RXF: 044105B40000
RXD: 2808
MTH: 00090005FFD8
NAM: TFT
You can change the "NAM" field to whatever makes most sense to you. The OEM sensor is on the trans fluid output to the cooling loop, so it is the hottest temp that the trans fluid sees.
-Charlie
mesooohoppy
New member
perfect. thank you for all of that other info. i really appreciate it. also good to know that i can change the name, although TFT is prob the best.
Malcolm99
Member
Just watch Long term (and short term) fuel trims, depending on tire size and load/weight of vehicle, engine conditions ect,. you want to see the LTFT level out at or near +14 cruising around for any period of time at or around 70mph, if your seeing 19LTFT lean something is not right it's trying to richen the mixture up under load or certain conditions, 8LTFT rich cruising and it is trying to lean out the FT, like when you come off throttle, WOT or at idle which would be a LTFT normal condition During those conditions. This may take a few hours of driving for the ECU to learn/smooth out the LTFT for the best fuel economy under the conditions it is use to, every vehicle will vary a little and the conditions the vehicle is used in can effect the LTFT as well. You don't want the trans temp over 200-210 for any length of time really, hills are the killer where I live.
EDIT: this was incorrect as pointed out below, I'm now running at 0% LTFT/STFT and it was a bad MAF.
EDIT: this was incorrect as pointed out below, I'm now running at 0% LTFT/STFT and it was a bad MAF.
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