Throttle position problem
Thread Starter
Intermediate
Joined: Jan 2014
Posts: 48
Likes: 0
Throttle position problem
I have an 84 crossfire I was tuning while
Waiting for a new ecm and prom while
Still using the old ones I balance the throttle
Bodies and go to set the tps it's got three wires the top one shows 4.83v the middle shows nothing and the bottom shows .03v I turn the tps and no change please help
Waiting for a new ecm and prom while
Still using the old ones I balance the throttle
Bodies and go to set the tps it's got three wires the top one shows 4.83v the middle shows nothing and the bottom shows .03v I turn the tps and no change please help
Race Director
Joined: Feb 2002
Posts: 11,616
Likes: 1,055
From: Compound in the Grove, Ga.
2026 Corvette of the Year Finalist - Unmodified
2025 C4 of the Year Winner - Unmodified
2024 C4 of the Year Finalist - Unmodified
2020 C3 of the Year Finalist - Unmodified
2019 C4 of Year Finalist (performance mods)
2018 C4 of Year Finalist
2015 C4 of the Year Finalist
St. Jude Donor '16
Measure the voltage between A & B adjust the TPS to 0.52 +/-0.025V Closed throttle
http://www.corvetteactioncenter.com/...-problems.html
http://forums.corvetteforum.com/c3-t...solutions.html
http://www.corvetteactioncenter.com/...-problems.html
http://forums.corvetteforum.com/c3-t...solutions.html
Last edited by FASTAZU; Jan 14, 2014 at 10:42 PM.
Race Director
Joined: Aug 2007
Posts: 11,889
Likes: 8
From: Whitefish Falls Ontario
St. Jude Donor '08-'09
Are you connecting your meter to the bottom two wires on the TPS? If you don't get a change when you move the TPS either it is NFG or the arm is not inserted into the throttle body correctly.. To check the TPS you could disconnect it and try manually moving the arm if you get a varying voltage check how it sits in the throttle body, if it doesn't change you need a new one..
Thread Starter
Intermediate
Joined: Jan 2014
Posts: 48
Likes: 0
I do not get a changein voltage on any of the wires even when moving the throttle position arm by hand when I unplug it and check voltage coming to the tps I get the same 4.83 on the top nothing In the middle and .03 on the bottom is that voltage to the three tps wires normally and why would the third wire have the .03 reading
Race Director
Joined: Aug 2007
Posts: 11,889
Likes: 8
From: Whitefish Falls Ontario
St. Jude Donor '08-'09
If you read We Gone's post #2 and followed the instructions in the first link he provided for you, and then my last post, you would know where your problem was..
Burning Brakes
Joined: Feb 2013
Posts: 1,173
Likes: 152
From: norway
I do not get a changein voltage on any of the wires even when moving the throttle position arm by hand when I unplug it and check voltage coming to the tps I get the same 4.83 on the top nothing In the middle and .03 on the bottom is that voltage to the three tps wires normally and why would the third wire have the .03 reading
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Intermediate
Joined: Jan 2014
Posts: 48
Likes: 0
That's what I'm thinkin jut buy a new one my new ecm and prom should b in today my real question was is that the correct voltage on the wires when there not hooked to the tps also I keep getting conflicting views on what two wires to jump to set the tps
Race Director
Joined: Feb 2002
Posts: 11,616
Likes: 1,055
From: Compound in the Grove, Ga.
2026 Corvette of the Year Finalist - Unmodified
2025 C4 of the Year Winner - Unmodified
2024 C4 of the Year Finalist - Unmodified
2020 C3 of the Year Finalist - Unmodified
2019 C4 of Year Finalist (performance mods)
2018 C4 of Year Finalist
2015 C4 of the Year Finalist
St. Jude Donor '16
The reading is done on wires A & B with every thing plugged up and ignition on. You may have to rig up some jumper wires or pierce them with a probe, Mid America also sells a jumper set up. The second link to the 82 is because it also has the L83 and much of it works over to the 84.
Race Director
Joined: Feb 2002
Posts: 11,616
Likes: 1,055
From: Compound in the Grove, Ga.
2026 Corvette of the Year Finalist - Unmodified
2025 C4 of the Year Winner - Unmodified
2024 C4 of the Year Finalist - Unmodified
2020 C3 of the Year Finalist - Unmodified
2019 C4 of Year Finalist (performance mods)
2018 C4 of Year Finalist
2015 C4 of the Year Finalist
St. Jude Donor '16
Burning Brakes
Joined: Feb 2013
Posts: 1,173
Likes: 152
From: norway
Intermediate
Joined: Feb 2005
Posts: 40
Likes: 0
From: West Chester Ohio
Measure the voltage between A & B adjust the TPS to 0.52 +/-0.025V Closed throttle
http://www.corvetteactioncenter.com/...-problems.html
http://forums.corvetteforum.com/c3-t...solutions.html
http://www.corvetteactioncenter.com/...-problems.html
http://forums.corvetteforum.com/c3-t...solutions.html