tps voltage
Thread Starter
Intermediate
Joined: Oct 2003
Posts: 42
Likes: 0
From: San Lorenzo Ca
tps voltage
I am having a hrad time measuring my TPS voltage with the "Paper Clip" method. Is there another way that I can measure this to get an accurate reading.....Thank you
Team Owner
Joined: Jan 2003
Posts: 20,293
Likes: 240
From: Summerland B.C. Canada
Re: tps voltage (89blkvet)
There is a patch cord that you plug in between the connectors to simplify measurement.
I sharpened two paper clips and I slide them along the top of the wire into the connector. I get them far enough in to make connection with the pin in the connector. Works everytime.
You are using the top to wires of the TPS, Right ?
My laptop and software now take over for the paper clips :D
:cheers:
I sharpened two paper clips and I slide them along the top of the wire into the connector. I get them far enough in to make connection with the pin in the connector. Works everytime.
You are using the top to wires of the TPS, Right ?
My laptop and software now take over for the paper clips :D
:cheers:
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Re: tps voltage (AGENT 86)
There is a patch cord that you plug in between the connectors to simplify measurement.
I sharpened two paper clips and I slide them along the top of the wire into the connector. I get them far enough in to make connection with the pin in the connector. Works everytime.
You are using the top to wires of the TPS, Right ?
My laptop and software now take over for the paper clips :D
:cheers:
I sharpened two paper clips and I slide them along the top of the wire into the connector. I get them far enough in to make connection with the pin in the connector. Works everytime.
You are using the top to wires of the TPS, Right ?
My laptop and software now take over for the paper clips :D
:cheers:
If there is none, it would be a lot easier for me to check/set mine using Diacom with the engine idling, rather than using jumper wires on the TPS itself.
Thanks,
Jake
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: tps voltage (JAKE)
The TPS is adjusted with the throttle at base idle (~450RPM) positiion, while normal idle is around 600-700RPM.
With the IAC disconnected, ignition on and engine off you may be able to read the TPS voltages, though I can't recall if the scanner will get sensor values with the engine not running.
With the IAC disconnected, ignition on and engine off you may be able to read the TPS voltages, though I can't recall if the scanner will get sensor values with the engine not running.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Team Owner
Joined: Jan 2003
Posts: 20,293
Likes: 240
From: Summerland B.C. Canada
Re: tps voltage (JAKE)
There is a patch cord that you plug in between the connectors to simplify measurement.
I sharpened two paper clips and I slide them along the top of the wire into the connector. I get them far enough in to make connection with the pin in the connector. Works everytime.
You are using the top to wires of the TPS, Right ?
My laptop and software now take over for the paper clips :D
:cheers:
I was wondering if you ever made a back to back test to see if there is any difference in voltage when checking the TPS with the engine "off"/ignition "on" Vs engine idling?
If there is none, it would be a lot easier for me to check/set mine using Diacom with the engine idling, rather than using jumper wires on the TPS itself.
Thanks,
Jake
I sharpened two paper clips and I slide them along the top of the wire into the connector. I get them far enough in to make connection with the pin in the connector. Works everytime.
You are using the top to wires of the TPS, Right ?
My laptop and software now take over for the paper clips :D
:cheers:
I was wondering if you ever made a back to back test to see if there is any difference in voltage when checking the TPS with the engine "off"/ignition "on" Vs engine idling?
If there is none, it would be a lot easier for me to check/set mine using Diacom with the engine idling, rather than using jumper wires on the TPS itself.
Thanks,
Jake
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Re: tps voltage (65Z01)
Yes, to set the TPS low voltage the throttle position needs to be at base idle.
The method to establish base idle and adjust the TPS is on my site.
The method to establish base idle and adjust the TPS is on my site.
My engine won't idle at 450 RPMs and Diacom won't show anything with the engine NOT running.
Are you sure about that IAC having to be disconnected part?
No matter whether the engine is idling or off, the throttle position doesn't change. The only change occurs when the engine is idling and the IAC maintains the idle speed; still the throttle remains stationary, only the IAC pintel moves.
Jake
[Modified by JAKE, 11:51 PM 1/23/2004]
[Modified by JAKE, 5:56 PM 1/24/2004]
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Re: tps voltage (89blkvet)
Jake's right - there's no mechanical linkage between the IAC and the TPS so it doesn't matter whether it's adjusted with the IAC disabled or enabled. You will need to adjust it if you change the angle of the throttle blades, but there's little reason to do make that adjustment unless the throttle body is worn or dirty (at which point you need to clean it first). If you want to make an inexpensive test rig, obtain some female weatherpak terminals and some 10 to 12 gauge solid strand copper wire. Cut the wire into 1 to 2 inch lengths and solder or crimp it to the weatherpak connectors. Insert the connectors into the male half of the TPS harness and the wire ends into the female half, making sure that none of the connectors touch one another (or if you want to minimize that risk, cover the majority of the connectors with shrink wrap). Hookup a DVM to the connectors from the appropriate leads (return voltage is blue and ground is black). Turn on the ignition and adjust TPS voltage to .54 +/- .08.
