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Torque » Torque OBD ECU Scanner » Torque Discussion / Ideas » Trans temp, IAT, and MAP

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Author Topic: Trans temp, IAT, and MAP
jschildm
Member
Posts: 29
Post Re: Trans temp, IAT, and MAP
on: October 3, 2014 (GMT)

So …. anyone mess with this for a while?

Capp777
Member
Posts: 2913
Post Re: Trans temp, IAT, and MAP
on: October 3, 2014 (GMT)

Hey Jschildm!

How has your TFT been doing?

m j
Member
Posts: 92
Post Re: Trans temp, IAT, and MAP
on: October 4, 2014 (GMT)

I changed the formula for accel pedal position to read in a % other then that not much

jschildm
Member
Posts: 29
Post Re: Trans temp, IAT, and MAP
on: October 10, 2014 (GMT)

Quote from Capp777 on October 3, 2014

Hey Jschildm!

How has your TFT been doing?

It seems to maintain a consistent offset with my mechanical gauge in the pan. I thought I read on a powerstroke forum where someone said the temp sensor in the transmission was in the valve body or one of the solenoids or something. This would explain why it read higher than the oil in the pan. I don’t run the app all the time, but it it seems to be working very well.

WViall
Member
Posts: 2
Post Re: Trans temp, IAT, and MAP
on: November 24, 2015 (GMT)

Hello all, i am new to the forum and i am reading alot of info on the 7.3 pid’s. I am just inquiring to see if anyone knows if the injector buzz test is capable? Thanks

Capp777
Member
Posts: 2913
Post Re: Trans temp, IAT, and MAP
on: October 27, 2016 (GMT)

Quote from Capp777 on February 24, 2014
My list to date.

See MJ’s postings for his suggested names
for the OBS 7.3L. (Link below).

MAP psia OBS
MAP psia
Header: C410F1
Mode/Pid: 221452
Equation: (((A*256)+B)*0.00109)-16.03
Units: psia

MAP freq OBS
MAP freq
Header: C410F1
Mode/Pid: 221452
Equation: ((A*256)+B)*0.00390625
Units: Hz

Boost OBS
Boost OBS
Header: C410F1
Mode/Pid: 221452
Equation: ((((A*256)+B)*0.00109)-16.03)-Baro()
Units: psi

Boost OBS (Alternate)
Boost Alt
Header: C410F1
Mode/Pid: 221452
Equation: ((((A*256)+B)*0.00109)-16.03)-Val{Baro42 psia}
Units: psi

MAP kPa OBS
MAP kPa
Header: C410F1
Mode/Pid: 221452
Equation: (((A*256)+B)*0.00752)-110.45
Units: kPa

IAT V
IAT V
Header: C410F1
Mode/Pid: 22114A
Equation: ((A*256)+B)/13168
Units: Volts

IAT F OBS
IAT F
Header: C410F1
Mode/Pid: 22114A
Equation: (((A*256)+B)*-0.00314)+193.34
Units: °F

IAT C OBS
IAT C
Header: C410F1
Mode/Pid: 22114A
Equation: (((A*256)+B)*-0.00174)+89.65
Units: °C

IAT C Poly OBS *
IAT C Poly
Header: C410F1
Mode/Pid: 22114A
Equation:
(-0.00000000000196*(((A*256)+B)*((A*256)+B)*((A*256)+B)))
+(0.000000196*(((A*256)+B)*((A*256)+B)))+(-0.00774*((A*256)+B))+144.0
Units: °C

Equation (Alternate):
(-1.96*(10^-12)*(((A*256)+B)^3))+(1.96*(10^-7)*(((A*256)+B)^2))+(-0.00774*((A*256)+B))+144.0
Units: °C

TFT V
TFT V
Header: C410F1
Mode/Pid: 2211BD
Equation: ((A*256)+B)/13168
Units: Volts

TFT F OBS
TFT F
Header: C410F1
Mode/Pid: 2211BD
Equation: (((A*256)+B)*-0.00360)+212.98
Units: °F

TFT F Poly OBS *
TFT F Poly
Header: C410F1
Mode/Pid: 2211BD
Equation:
(-0.00000000000194*(((A*256)+B)*((A*256)+B)*((A*256)+B)))
+(0.0000002*(((A*256)+B)*((A*256)+B)))+(-0.0096*((A*256)+B))+259.5
Units: °F

Equation (Alternate):
(-1.94*(10^-12)*(((A*256)+B)^3))+(2*(10^-7)*(((A*256)+B)^2))+(-0.0096*((A*256)+B))+259.5
Units: °F

TFT C OBS
TFT C
Header: C410F1
Mode/Pid: 2211BD
Equation: (((A*256)+B)*-0.00189)+95.35
Units: °C

Baro27 freq
Baro freq
Header: C410F1
Mode/Pid: 221127
Equation: A
Units: Hz

Baro42 psia
Baro psia
Header: C410F1
Mode/Pid: 221442
Equation: ((A*256)+B)/27.67985874
Units: psia

Baro42 kPa
Baro kPa
Header: C410F1
Mode/Pid: 221442
Equation: ((A*256)+B)/4.01463133
Units: kPa

Baro42 inH2O
Baro inH2O
Header: C410F1
Mode/Pid: 221442
Equation: (A*256)+B
Units: inH2O

MJ’s post for suggested names…

http://powerstrokenation.com/forums/showthread.php?t=299202&page=3

* Updated polynomials due to parser changes.

Friendly reminder:

The polynomial equations are preferred due to the
linear equations not being accurate at either end of
the voltage “S” curve.

For example, the TFT linear equation given will top out at
213°F and will not accurately show an overheat condition
beyond the point in the “S” where the end turns.

Other sites continue to make the mistake of propagating
the linear equation.

Capp777
Member
Posts: 2913
Post Re: Trans temp, IAT, and MAP
on: November 4, 2016 (GMT)

Bump for edits.

Ian this applies to 1.8.152.
[Ford] Transmission Fluid Temperature (Method 3).

TFT F OBS from above.

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