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Wire/sensor on radiator

Tiny
ETERNALARIANNE
  • MEMBER
  • 1987 CHEVROLET CELEBRITY
  • 2.8L
  • V6
  • 2WD
  • AUTOMATIC
  • 200,285 MILES
This is more information for me than anything else.

I am having a hard time finding what this is that plugs into the radiator. I’ve replaced the thermostat and temperature sensor on the engine itself, but I can’t find anything about what this is on the radiator.

It has a single wire going into it and it’s about 2 inches below the fill cap of the radiator. If this is a sensor, should I replace it since I’ve replaced the temperature sensor on the engine or what?
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Thursday, February 4th, 2021 AT 3:54 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,913 POSTS
Hi,

I believe you are seeing a coolant level sensor. I tried looking but can't find it in my manuals. I did, however, find an AC Delco part number. It is 25005074. If you don't have a light indicating low coolant, I would leave it alone. I did find a pic online and attached a pic of it below.

Let me know if this helps or if you have other questions.

Take care and God Bless,

Joe
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Thursday, February 4th, 2021 AT 4:53 PM
Tiny
ETERNALARIANNE
  • MEMBER
  • 189 POSTS
Okay, thanks. That’s makes since it would be a sensor of low coolant. I’m good on levels and haven’t seen a dash light so I’ll consider it good!
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Thursday, February 4th, 2021 AT 4:55 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,913 POSTS
You are very welcome. I agree. If it isn't broken, don't fix it. LOL

Please feel free to come back anytime you have questions.

Take care,
Joe
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Thursday, February 4th, 2021 AT 4:57 PM

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