Anybody have a spare TPS and a DMM handy? - Fuelly Forums

Click here to see important news regarding the aCar App

Go Back   Fuelly Forums > Tech, Troubleshooting and Repair > General Maintenance and Repair
Today's Posts Search Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 02-06-2007, 07:05 AM   #1
Registered Member
 
MetroMPG's Avatar
 
Join Date: Dec 2005
Posts: 4,223
Country: United States
Anybody have a spare TPS and a DMM handy?

Thinking about the ForkenSwift last night, had a brainwave:

Is a TPS just a potentiometer? Anyone know what the ohm rating is?

Seems like its range of motion is going to roughly match what I need for the ForkenSwift's potbox. (I did hack a potentiometer solution using gears, but I'm thinking ahead to replacement of that hack should it break/wear out).
__________________

MetroMPG is offline   Reply With Quote
Old 02-06-2007, 07:56 AM   #2
Driving on E
 
Matt Timion's Avatar
 
Join Date: Sep 2005
Posts: 3,110
Country: United States
I actually have 3 spare honda TPS sensors and DMM handy. I'm not an electrical guru, so you might have to walk me through what you're looking for.
__________________

Matt Timion is offline   Reply With Quote
Old 02-06-2007, 08:05 AM   #3
Registered Member
 
MetroMPG's Avatar
 
Join Date: Dec 2005
Posts: 4,223
Country: United States
How many electrical connectors/tabs/pins are there on the TPS?

I'd be looking for the range of ohms between 2 tabs as the actuator is rotated.

Try setting the DMM ohms range to "20k", hold to 2 TPS tabs and rotate the actuator. (You may have to try different pairs of tabs until you get a reading.)

I'm just curious what the ohm range is from "idle" to "wot".
MetroMPG is offline   Reply With Quote
Old 02-06-2007, 08:42 AM   #4
Registered Member
 
GasSavers_TomO's Avatar
 
Join Date: Oct 2006
Posts: 1,108
Country: United States
Send a message via AIM to GasSavers_TomO Send a message via MSN to GasSavers_TomO Send a message via Yahoo to GasSavers_TomO
I know for Hondas the voltage at idle is .45V (and below) and WOT is 4.5V+
The TPS has three wires: Ground, +5V and output (anywhere from .45V to 4.5V)
to measure the Ohms: The signal wire is the middle one so one lead there and Pin 3 is the +5V feed (pin 3 should be the one furthest right when the locking tab on the TPS is straight up) just measure resistance at no throttle and full throttle to get the Ohms reading.
Disclaimer:
Some of this is going off of memory WOT = very close to no resistance and closed throttle should be around 450 Ohms

Hope some of this helps.
__________________

Honda Civic VX Info/Links
Remember to use good Webiquette!
Quote:
Originally Posted by ezeedee View Post
controversy is an idea thought up by weak people who are too afraid to hear the truth.
GasSavers_TomO is offline   Reply With Quote
Old 02-06-2007, 09:15 AM   #5
Registered Member
 
MetroMPG's Avatar
 
Join Date: Dec 2005
Posts: 4,223
Country: United States
Thanks Tom. Sure it's not 4500 ohms? I could use it if it's 4500
MetroMPG is offline   Reply With Quote
Old 02-06-2007, 10:10 AM   #6
Registered Member
 
GasSavers_TomO's Avatar
 
Join Date: Oct 2006
Posts: 1,108
Country: United States
Send a message via AIM to GasSavers_TomO Send a message via MSN to GasSavers_TomO Send a message via Yahoo to GasSavers_TomO
not absolutely sure. I just used a formula to drop 4.5V down to .45V at 1mA and got 450, but it might be 4500 Ohms though. We'll have to wait and see what Matt says.
__________________

__________________

Honda Civic VX Info/Links
Remember to use good Webiquette!
Quote:
Originally Posted by ezeedee View Post
controversy is an idea thought up by weak people who are too afraid to hear the truth.
GasSavers_TomO is offline   Reply With Quote
Reply


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


» Fuelly Android Apps
Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 12:39 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.