Code 22, 89 Conv
Thread Starter
Advanced<br><img src="/forums/images/ranks/100-500.gif" border="0">
Joined: Apr 2019
Posts: 87
Likes: 29
From: Livermore, CA
2023 Corvette of the Year Finalist - Unmodified
2022 C4 of the Year Winner - Unmodified
Code 22, 89 Conv
Receivedthe code 22 and replaced the TPS on my 89. Set the voltage at .54 and ran fine for a couple of weeks. Him getting cold 22 again, then attempted to reset the voltage and got no voltage at all. I looked in the shop manual and told me to jump all 3 connections on the TPS. When I did, I got a negative voltage reading. Any ideas or help would be greatly appreciated. Thank you forum!
Last edited by shafe9900; Nov 23, 2020 at 03:24 PM.
Thread Starter
Advanced<br><img src="/forums/images/ranks/100-500.gif" border="0">
Joined: Apr 2019
Posts: 87
Likes: 29
From: Livermore, CA
2023 Corvette of the Year Finalist - Unmodified
2022 C4 of the Year Winner - Unmodified
No reading
Thanks for the reply. I did that and got no reading at all.
I'll try another TPS.
I'll try another TPS.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Test the two outer wires and you should see +5Vdc, if a negative value reverse DMM leads.
Then, keeping the DMM ground lead on the ground side of the TPS, measure the center electrode voltage.
Also, pull the TPS connector and inspect/clean the connector pins for solidarity. They should be clean and not move in/out when pressed lightly.
Then, keeping the DMM ground lead on the ground side of the TPS, measure the center electrode voltage.
Also, pull the TPS connector and inspect/clean the connector pins for solidarity. They should be clean and not move in/out when pressed lightly.
Thread Starter
Advanced<br><img src="/forums/images/ranks/100-500.gif" border="0">
Joined: Apr 2019
Posts: 87
Likes: 29
From: Livermore, CA
2023 Corvette of the Year Finalist - Unmodified
2022 C4 of the Year Winner - Unmodified
Thanks.
Thank you for the advice! I will check it out. Appreciated the diagram as well.
Thread Starter
Advanced<br><img src="/forums/images/ranks/100-500.gif" border="0">
Joined: Apr 2019
Posts: 87
Likes: 29
From: Livermore, CA
2023 Corvette of the Year Finalist - Unmodified
2022 C4 of the Year Winner - Unmodified
Code 22
Now I'm setting the TPS and I can't get a reading above .31 V
This is beginning to drive me nuts. I did replace my idle air control valve about a month ago.
Suggestions would be greatly appreciated.
Thank you guys out on the forum!
This is beginning to drive me nuts. I did replace my idle air control valve about a month ago.
Suggestions would be greatly appreciated.
Thank you guys out on the forum!
Pro
Joined: Aug 2020
Posts: 647
Likes: 126
From: Liliha Bakery stuffing my face with coco puffs!
Did you set minimum air idle when you change the IAC?
https://www.corvetteforum.com/forums...dle-speed.html
https://www.corvetteforum.com/forums...dle-speed.html
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
Thread Starter
Advanced<br><img src="/forums/images/ranks/100-500.gif" border="0">
Joined: Apr 2019
Posts: 87
Likes: 29
From: Livermore, CA
2023 Corvette of the Year Finalist - Unmodified
2022 C4 of the Year Winner - Unmodified
89 Vette
Yes I did..thanks.
Last edited by shafe9900; Nov 29, 2020 at 02:47 PM.