Idle will not come down when stopping
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
19 replies and not a single suggestion to check the TPS sensor? C'mon guys you're slacking!
Sometimes when a TPS dies it acts all funky at what should be idle and does not return to 0.54v. If you have a TPS test harness you can check it or you can puncture the wires with some small needles and use a multimeter. Sometimes an analog multimeter is best for the TPS so you can see the needle bounce up and down if it's busted.
Sometimes when a TPS dies it acts all funky at what should be idle and does not return to 0.54v. If you have a TPS test harness you can check it or you can puncture the wires with some small needles and use a multimeter. Sometimes an analog multimeter is best for the TPS so you can see the needle bounce up and down if it's busted.
Pro
Joined: Jan 2004
Posts: 565
Likes: 0
From: Toronto ON
19 replies and not a single suggestion to check the TPS sensor? C'mon guys you're slacking!
Sometimes when a TPS dies it acts all funky at what should be idle and does not return to 0.54v. If you have a TPS test harness you can check it or you can puncture the wires with some small needles and use a multimeter. Sometimes an analog multimeter is best for the TPS so you can see the needle bounce up and down if it's busted.
Sometimes when a TPS dies it acts all funky at what should be idle and does not return to 0.54v. If you have a TPS test harness you can check it or you can puncture the wires with some small needles and use a multimeter. Sometimes an analog multimeter is best for the TPS so you can see the needle bounce up and down if it's busted.
Happened to me.
Instructor
Joined: Dec 2007
Posts: 111
Likes: 0
From: Muscatine Iowa
19 replies and not a single suggestion to check the TPS sensor? C'mon guys you're slacking!
Sometimes when a TPS dies it acts all funky at what should be idle and does not return to 0.54v. If you have a TPS test harness you can check it or you can puncture the wires with some small needles and use a multimeter. Sometimes an analog multimeter is best for the TPS so you can see the needle bounce up and down if it's busted.
Sometimes when a TPS dies it acts all funky at what should be idle and does not return to 0.54v. If you have a TPS test harness you can check it or you can puncture the wires with some small needles and use a multimeter. Sometimes an analog multimeter is best for the TPS so you can see the needle bounce up and down if it's busted.
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
Team Owner
Joined: Sep 2003
Posts: 20,179
Likes: 673
From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
scorp is right. The TPS voltage needs to be check for closed throttle position and operation. You can insert your VOM probes into the TPS connector and make contact with the wires. With the ignition on engine need not be running, check the voltage at closed position .54 volts and then open the throttle slowly and watch the voltage climb. If the voltage jumps all over the place or does not respond linearly, the TPS sensor may be bad. Using a needle type gauge (analog) will help you view the voltage change as the throttle is moved.
Instructor
Joined: Dec 2007
Posts: 111
Likes: 0
From: Muscatine Iowa
scorp is right. The TPS voltage needs to be check for closed throttle position and operation. You can insert your VOM probes into the TPS connector and make contact with the wires. With the ignition on engine need not be running, check the voltage at closed position .54 volts and then open the throttle slowly and watch the voltage climb. If the voltage jumps all over the place or does not respond linearly, the TPS sensor may be bad. Using a needle type gauge (analog) will help you view the voltage change as the throttle is moved.
Yes scorp is right......the TPS voltage needs to be checked.....and one of the steps that is included in setting the base idle is to check the TPS voltage.......
Team Owner
Joined: Mar 2000
Posts: 83,383
Likes: 87
From: Boston, MA
I'd have to dig up the steps, but does it say to check it throughout the entire range and watch for jumpiness (is that a word?).
Instructor
Joined: Dec 2007
Posts: 111
Likes: 0
From: Muscatine Iowa
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
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
