Data to collect? - Page 2 - Fuelly Forums

Click here to see important news regarding the aCar App

Thread Tools Display Modes
Old 04-15-2009, 04:39 AM   #11
Registered Member
theholycow's Avatar
Join Date: Apr 2008
Posts: 6,624
Country: United States
Send a message via ICQ to theholycow Send a message via AIM to theholycow Send a message via MSN to theholycow Send a message via Yahoo to theholycow
Based on what I saw at that link, it looks like you're expected to tap the wire that goes from that sensor to the ECU rather than query it from the ECU via OBDII. You get the same data that the ECU gets, rather than have the ECU tell you. You're using the existing sensor, you're just using its raw signal rather than the data the ECU provides.

So, for the IAT, you'd find the wire coming out of the intake snorkel and tap it to run to that module.

This sig may return, some day.
theholycow is offline   Reply With Quote
Old 04-15-2009, 07:49 AM   #12
Registered Member
GasSavers_BEEF's Avatar
Join Date: Apr 2008
Posts: 1,831
the way I saw it (and it may be wrong) it asks you if you want to include the AIT sensor. I am not farmiliar with that terminology but if you look at the box, it has a thermocouple plug on it that says K-TYPE T.C. the TC plug is standard for most K-types of thermocouples. I think yellow is for K and blue is for T and it is polarized. one lead is wider than the other.

it just hit me. the IAT sensor in most cars isn't a thermocouple at all. it is a variable resistor. a theromocouple actually gives off a voltage (be it small and able to handle almost no current draw) and that voltage varies by temperature. the IAT, being just a resistor, can be replaced with a resistor. this was a trick that some people used for a power increase. you would put a large resistor either inline with the sensor or to relace it completely. this would make the engine think that the air was colder. it didn't matter during regular driving but during WOT, you go into open loop and it ignores the oxy sensor.

wow, I just flashed back a couple of years on that one.

Be the change you wish to see in the world
--Mahatma Gandhi

GasSavers_BEEF is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Retire your old vehicles Matt Timion Fuelly Web Support and Community News 12 05-01-2008 12:08 PM
1998 National Speed Limit? gto78 General Discussion (Off-Topic) 7 03-22-2008 01:10 PM
when does winter gas end? civic94 General Maintenance and Repair 0 02-25-2008 06:20 PM
Brake and light inspection SupraRXZ General Maintenance and Repair 8 10-04-2006 01:06 AM
Ping Sming and bad gas lovemysan General Fuel Topics 4 09-14-2006 08:20 AM

» Fuelly iOS Apps
No Threads to Display.
» Fuelly Android Apps
No Threads to Display.
Powered by vBadvanced CMPS v3.2.3

All times are GMT -8. The time now is 10:52 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.