Voltage Tables

[bholland]

Does anyone know what the voltage to charge air temperature table is?

I have just purchased an LM-3 AuxBox from Innovate Motorsports and I want to record the charge air temps from my sensor but I don't know what the voltage conversion table is.

Also does anyone have the EGT conversion table as well??

Thanks,

[NAJ]

0 deg = 4.70 volts
20 deg = 4.47
40 deg = 4.11
60 deg = 3.67
80 deg = 3.08
100 deg = 2.51
120 deg = 1.97
140 deg = 1.52
160 deg = 1.17
180 deg = .86
200 deg = .65
220 deg =.48
240 deg = .35
260 deg = .28
Cannot help with EGT's

[bholland]

Thanks, I've been looking all over for this.
Will this work for a 1987 Shelby GLHS Charger sensor? I'm assuming they are they same sensor for most of the dodge/chryslers, but I just want to make sure.

[NAJ]

That came from a Chrysler Training Manual and the manual does not discuss individual vehicles only the theory of operation,evolution and general diagnostics of systems up to 1990 so that chart will be accurate for all vehicles using an Air Charge Temp Sensor.

[glhs727]

Excellent info!! Thanks NAJ!

see Brian, I knew that info was out there somewhere :)
later,
Cindy

[bholland]

Thanks for checking Cindy, I put the table into the LogWorks SW last night and it works great.
Thanks NAJ!!!!

[NAJ]

Not A Problem,Glad To Help.

[87turbodance]

Would that table also apply to chrysler CTS sensors?

[NAJ]

Coolant Temp Sensor Response Chart
110 degs = 4.20 volts
120 = 4.00
130 = 3.77
140 = 3.60
150 = 3.40
160 = 3.20
170 = 3.02
180 = 2.80
190 = 2.60
200 = 2.40
210 = 2.20
220 = 2.00
230 = 1.80
240 = 1.62
250 = 1.45
Temperature to Resistance
32 degs = 30 - 35 K ohms
77 degs = 9 - 11 K ohms
212 degs = 640 - 720 ohms

[87turbodance]

oooohhhh. thanks. That kind of info would be very valuable for MegaSquirt EFI :: Index users.

[NAJ]

Someone should make those charts a sticky so I do not have to retype them when someone else needs the info.
Glad I could be of help.

[jonnymopar]

Quote:

Originally Posted by NAJ 32 degs = 30 - 35 K ohms 77 degs = 9 - 11 K ohms 212 degs = 640 - 720 ohms

YES! This is the information that I have been searching and searching for! I don't have a working TII charge air temp sensor to test, but I've been trying to figure out if the Neon charge air temp sensor is compatible with the old turbo Dodge sensor. It definitely appears to be!

[crazymadbastard]

Ok Naj thanks,
how about the 3bar and 2 bar sensors?

tps etc? please.

[NAJ]

Map Sensor Response Chart Turbocharged
Pressure in Inches/HG to Voltage
24.01HG/.43V
18.11HG/.93V
12.20HG/1.42V
6.30HG/1.92V
.39HG/2.41V
2.71PSIG/2.91V
5.61PSIG/3.41V
8.51PSIG/3.90V
11.31PSIG/4.40V
14.31PSIG/4.90V
TPS Response Chart
Throttle Position in Degrees to Increase of Minimum TPS Volts
Closed Throttle
10 DEGS/0.00V
20 DEGS/0.38V
30 DEGS/0.75V
Half Throttle
45 DEGS/1.31V
58 DEGS/1.80V (1)
75 DEGS/2.43V (2)
Wide Open Throttle
90 DEGS/3.00V


(1) The computer will usually consider an increase of 1.80 volts or more over the minimum TPS voltage to be WOT.
(2)2.43 volts above the minimum TPS voltage during cranking will cause the computer to recognize Clear Flood request shutting off all fuel delivery.

[crazymadbastard]

GM part 16040749 (discontinued) 3 Bar map 3bar measured voltage with cheap digital voltmeter and used the compressor regulator to set pressure . Btw, pin a is ground b is signal and c is 5v. I do believe on the newer sensors PINS A and B are switched.
20hg vac .5
Atmosphere 1.59 (currently 30.13 in per weather.com)
under boost- PSI
5 1.98
10 2.8
15 3.10
20 3.64
25 4.25
28 4.63
32 4.99
Enjoy!