Reply To: Why does my 2004 Subaru overheat then cool down while driving?

› Forums › Car Problems & Maintenance › Subaru › Why does my 2004 Subaru overheat then cool down while driving?

May 11, 2025 at 7:23 pm #1119
Matt

    I had a 99 Outback a long time ago.

    I was having that issue with the temp climbing up and going back down. It was the head gaskets. It was a hairline break, causing exhaust to leak into the coolant.

    You’re going to need to check your coolant for exhaust.

    It won’t show up unless you can get it to overheat.