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CharlieM View Drop Down
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Posts: 1797 		Direct Link To This Post Topic: Need some Gearhead Advice
    Posted: 09 Aug 2014 at 7:54pm
Originally posted by fwunder

Charlie, transmission temps are pretty easy in 4th and 5th gen 4.0Ls. It seems the engine oil temp/pressure either have secret sensors or no sensors.

fred


Sorry Guys,

I missed that you were looking for engine oil, not AT oil temps. Old age.. old brain...Ya know?
Charlie
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OLD: 2013 RP-172, 2010 Honda Pilot 3.5L 4WD
PRESENT: 2014 Camplite 21RBS, 2013 Supercharged Tacoma 4L V6 4WD
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fwunder View Drop Down
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Posts: 1676 		Direct Link To This Post Posted: 09 Aug 2014 at 7:23pm
Charlie, transmission temps are pretty easy in 4th and 5th gen 4.0Ls. It seems the engine oil temp/pressure either have secret sensors or no sensors.

fred
2014 RPod 178 => MyMods and Buying Habits
2008 4Runner Limited 4.0-liter V6
Yes, those are wild ponies dining on grass while dumping tanks!
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fwunder View Drop Down
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Posts: 1676 		Direct Link To This Post Posted: 09 Aug 2014 at 7:20pm
Originally posted by techntrek

What about adjusting the oil formula so it starts out closer to ambient, then see if it rises up to about 200 F?  It will take much longer than the coolant temp to come up to full temp, maybe 20-30 minutes.

Yeah, I'll try that Doug when we get back from...wait for it...the annual family crab feast!

Taking the sooby down to MD tomorrow.

fred
2014 RPod 178 => MyMods and Buying Habits
2008 4Runner Limited 4.0-liter V6
Yes, those are wild ponies dining on grass while dumping tanks!
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CharlieM View Drop Down
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Posts: 1797 		Direct Link To This Post Posted: 09 Aug 2014 at 7:14pm
FWIW my 2013 Tacoma 4.0L V6 has the same  1GR-FE engine code and it does report both T1 and T2 transmission temperature codes. The ScanGauge reads both. The codes for the ScanGauge are a different format so I can't help there, but the data is there and it must come from the transmission via the on-board computer. The Tacoma dashboard also has an AT over-temp idiot light but who knows what it's set for.
Charlie
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OLD: 2013 RP-172, 2010 Honda Pilot 3.5L 4WD
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techntrek View Drop Down
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Posts: 9062 		Direct Link To This Post Posted: 09 Aug 2014 at 6:51pm
What about adjusting the oil formula so it starts out closer to ambient, then see if it rises up to about 200 F?  It will take much longer than the coolant temp to come up to full temp, maybe 20-30 minutes.
Doug ~ '10 171 (2009-2015) ~ 2008 Salem ~ Pod instruction manual
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fwunder View Drop Down
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Posts: 1676 		Direct Link To This Post Posted: 09 Aug 2014 at 6:36pm
Spent way too much time searching the forums. Closest thing I could find was in Toyota GT86 forums. Figured I'd try it:

2101,Oil temperature t1,-40,215,°C,AC-40,0
2101,Oil temperature t2,-40,215,°F,(A - 40)*9/5 + 32,0

Interesting that PID 2101 does reflect data. Just not the right data. Both formula spit back -40. Didn't try running with it to see if number changes. I doubt it.

I think I did read that the late model FJCs don't report oil temp. Still trying to figure if 08 4runner 4.0 does.

Interesting side is how MPG is calculated in Engine Link:

MPG = (14.7 * 6.17 * 454 * VSS * 0.621371) / (3600 * MAF / 100)
MPG = 710.7 * VSS / MAF

MPG - miles per gallon
14.7 grams of air to 1 gram of gasoline - ideal air/fuel ratio
6.17 pounds per gallon - density of gasoline
4.54 grams per pound - conversion
VSS - vehicle speed in kilometers per hour
0.621371 miles per hour/kilometers per hour - conversion
3600 seconds per hour - conversion
MAF - mass air flow rate in 100 grams per second
100 - to correct MAF to give grams per second

Prolly would be a lot easier if manufacturers would give access to all the sensors and PIDs and you could just measure injector flow rate.

fred
2014 RPod 178 => MyMods and Buying Habits
2008 4Runner Limited 4.0-liter V6
Yes, those are wild ponies dining on grass while dumping tanks!
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Budward View Drop Down
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Posts: 438 		Direct Link To This Post Posted: 09 Aug 2014 at 11:41am
From what I've read the 4.0L 1GR-FE Toyota has no oil temp sensor Unhappy
I hope that is wrong, because I'd like to see it too!
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fwunder View Drop Down
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Posts: 1676 		Direct Link To This Post Posted: 08 Aug 2014 at 9:29pm
Thanks Doug. The formula I have for oil temp doesn't seem to be working for the 4Runner:

015C,Engine oil temperature,-40,419,°F,(A - 40)*9/5 + 32,0

Budward, you got a working formula?

Thanks!

fred
2014 RPod 178 => MyMods and Buying Habits
2008 4Runner Limited 4.0-liter V6
Yes, those are wild ponies dining on grass while dumping tanks!
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techntrek View Drop Down
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Posts: 9062 		Direct Link To This Post Posted: 08 Aug 2014 at 8:01pm
If you can get it to show you oil temps, that one is pretty vital.  Your tranny temp and coolant temp look normal for daily driving.  You'll see an oil temp about 10 degrees higher than coolant, usually about 200-205, until you start towing.
Doug ~ '10 171 (2009-2015) ~ 2008 Salem ~ Pod instruction manual
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fwunder View Drop Down
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Posts: 1676 		Direct Link To This Post Posted: 08 Aug 2014 at 3:05pm
I should have searched the forum first.

Its all right here...


Thanks anyways!

fred
2014 RPod 178 => MyMods and Buying Habits
2008 4Runner Limited 4.0-liter V6
Yes, those are wild ponies dining on grass while dumping tanks!
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