1982 High Idle

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Today | 07:26 PM

#21

markkrollc3

Thread Starter

Heel & Toe

Joined: Sep 2024

Posts: 23

Likes: 2

From: Lake Orion, MI

The part # kind of jumps out at you....I can't find it on the interweb.....Maybe I should buy a AC Delco.

Today | 07:47 PM

#22

klturi421

Instructor

Joined: Aug 2023

Posts: 212

Likes: 44

From: San Antonio, TX

Quote:

Originally Posted by markkrollc3

Here are pics of the setup. The copper ends you see sticking out are probing the connector. I files the diameter down which you can not see. Even with the TPS completely off, the reading is 1V. It is fully returned at 1V as well. Must be bad?

Definitely seems likely that the TPS is bad at this point. Just to rule out that it's not the multimeter, I'd test the multimeter on a the battery using the same setting to see if ti shows 12.5v or more. If so, then I think it's safe to assume that the TPS is bad. Assuming it's the original then all likelihood is it's at the end of it's life. I wouldn't toss it just yet and would recommend holding onto it until you get a replacement more so as a confirmation for you to test the original versus the new. I would recommend getting the sensor from GM Part #17111262. Though there are cheaper options, the last time I used a store-brand part I got inconsistent results.

One other test you could try is connecting the B wire and C wire to see if you get a reading above 3v. Shoud be closer to 5v but mine oscillated (I think due to ECM attempting to get a reading and adjust).