Coolant sensor leak

2346 Views 3 Replies 4 Participants Last post by JonnyAbs, Dec 24, 2021

Blackvalor26

Discussion Starter · Dec 19, 2021

Hello, this weekend I was replacing the valve cover gasket and noticed the sensor in the water outlet was sleeping out coolant. I replaced the sensor today with a new one and it is still leaking. It seems there isn't enough downward pressure on the sensor to keep it from leaking. Is this a common thing I just have to live with or should I go ahead and buy a new water outlet? Thanks.

Automotive design Auto part Automotive exterior Metal Motor vehicle

See less See more

Save

1 - 4 of 4 Posts

DrivenDaily

· #2 · Dec 19, 2021

I'd check the condition of the sealing surfaces. If it's an O-ring, then make sure the outlet is not scratched.

Save

repairman54

· #3 · Dec 20, 2021

New sensor should have had a new O ring. Since it's still leaking change the housing. Plastics can warp or crack over time.
Just had to do heater hose plastic connectors in my Tahoe for seeping/dripping.

Save

Reactions: 1

JonnyAbs

· #4 · Dec 24, 2021

Blackvalor26 said:
Hello, this weekend I was replacing the valve cover gasket and noticed the sensor in the water outlet was sleeping out coolant. I replaced the sensor today with a new one and it is still leaking. It seems there isn't enough downward pressure on the sensor to keep it from leaking. Is this a common thing I just have to live with or should I go ahead and buy a new water outlet? Thanks.

View attachment 71869 in

I replaced my radiator last month and it has a coolant sensor just like this. The outlet in the new rad was too big and caused a leak. My bush fix was to wrap the sealing surface of the sensor with Teflon tape. Maybe the coolant will eat at it, maybe not. I really had no other choice except getting another rad. All good for now though.

Save

1 - 4 of 4 Posts

This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.

Top Contributors this Month