C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Oil Temp Sensor replacement part

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Old Jul 7, 2023 | 05:21 PM
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Default Oil Temp Sensor replacement part

Has anyone found a good source for a replacement Oil Temp Sensor. I have tried 2 different new sensors from Standard (TS437) through Amazon. Both put the needle at 320 on initial cold start up. I am so mad that I broke the original sender during the engine rebuild.

Last edited by jmeyer58; Jul 7, 2023 at 05:22 PM. Reason: Spelling
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Old Jul 7, 2023 | 05:59 PM
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I found one at Eckler's Corvettes, but I haven't bought it yet. I'm not sure this is what I need. My analog gauge stays pegged at zero as does the electronic readout. My car is a '94 base coupe. Since both readouts are at zero I am assuming that it's the sender - do you think I'm right?

Last edited by rclanders; Jul 7, 2023 at 06:08 PM.
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Old Jul 7, 2023 | 07:28 PM
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Same Boat. My 1990 L-98 Sender is Broken and I have not found a replacement at the major auto parts stores or Rock Auto.
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Old Jul 8, 2023 | 08:14 AM
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If either stays pegged at zero it can be a broken wire but since both digital and analog are at zero that would require 3 broken wires. I would be more inclined to believe it’s a bad sensor or just unplugged.
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Old Jul 8, 2023 | 10:37 PM
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Corvette Central # 304813 Pigtail #664302

Zip Corvette ES 605

This is for 1990-1996. The Zip one costs more even though they are under the same ownership.
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Old Jul 9, 2023 | 01:09 AM
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If I can't locate an AC Delco or Delphi, I go with NAPA like I have for over 35 years. NAPA has never let me down.

https://www.napaonline.com/en/p/ECHOTS200
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Old Jun 30, 2025 | 08:40 AM
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I’m going to post this on all the threads I am subscribed to regarding this issue.

i found a fix! I bought this sending unit for a ‘92-95 ZR-1.

https://www.jerrysgaskets.com/sensor...new-92-95-2b1/

The thread is too large so off to Menards for an adapter number6805940 (3/8 in FIP x 1/4 in MIP). Thought I had it but the hex on the adapter interferes with the engine. I ended up putting the adapter in my drill press and removing the hex up about half way. This allows the adapter to thread all the way into the block. I’m sure if I tried a few different brass adapters I could find a solution without modifying the adapter but I was hot and sweaty so I didn’t feel like multiple trips to find different adapters. Plug in the connector and start the car, Check For Leaks!

my digital gauge and analog gauge now both work!

I wish I took pictures but again, Hot, Sweaty etc! Hope my description works.
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