Code 22, 89 Conv
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Joined: Apr 2019
Posts: 87
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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
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Joined: Apr 2019
Posts: 87
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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
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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.
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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.
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Joined: Apr 2019
Posts: 87
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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
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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
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Joined: Apr 2019
Posts: 87
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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.
