No heat/temperature gage high?

HOLLYROSS

MEMBER
2000 SUBARU LEGACY
4 CYL
4WD
AUTOMATIC
235,000 MILES

While driving the temperature gage went all the way to overheating and hot air turned cold. There is coolant, we changed the temperature gage and thermostat.

Wednesday, November 23rd, 2022 AT 11:21 AM

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,867 POSTS

Hi,

Are the same things happening since the work was completed? With the engine cold, remove the radiator cap (not the overflow) and see if the coolant level is full. If it is, perform the bleed procedure below and let me know if that takes care of the issue. If it is not low, let me know if the original issues are still occurring.

Take care,

Joe

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Thursday, November 24th, 2022 AT 8:22 PM

HOLLYROSS

MEMBER
1 POST

Sorry, didn't mention before. We already bled the coolant. The problem still exists. Thanks

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Saturday, November 26th, 2022 AT 11:36 AM

JACOBANDNICKOLAS

MECHANIC
109,867 POSTS

Hi,

If you used the aforementioned procedure for bleeding, then something is likely putting air into the cooling system. My first thought is a failing head gasket. Take a look through the link below and let me know if you see anything that mirrors what you see on the vehicle:

https://www.2carpros.com/articles/head-gasket-blown-test

Let me know.

Joe

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Saturday, November 26th, 2022 AT 8:23 PM