# Subaru Temp gauge stuck on high

**URL:** <https://community.cartalk.com/t/subaru-temp-gauge-stuck-on-high/66961>\
**Category:** Maintenance/Repairs\
**Created:** [August 8, 2011, 7:32pm UTC](https://community.cartalk.com/t/subaru-temp-gauge-stuck-on-high/66961 "2011-08-08T19:32:04Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![gdchavez](https://avatars.discourse-cdn.com/v4/letter/g/f19dbf/32.png) [@gdchavez](https://community.cartalk.com/u/gdchavez)\
**Post date:** [August 8, 2011, 7:32pm UTC](https://community.cartalk.com/t/subaru-temp-gauge-stuck-on-high/66961/1 "2011-08-08T19:32:04Z")

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We have replaced the sensor twice now and it still pegs on high. Sometimes when we just start up the car, other times after we are driving. Have spent $400 now and are very frustrated. Any help appreicated.

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**Author:** ![PhillipNeuman](https://avatars.discourse-cdn.com/v4/letter/p/e9c0ed/32.png) [@PhillipNeuman](https://community.cartalk.com/u/PhillipNeuman)\
**Post date:** [August 8, 2011, 8:21pm UTC](https://community.cartalk.com/t/subaru-temp-gauge-stuck-on-high/66961/2 "2011-08-08T20:21:58Z")

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Check the wiring.

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**Author:** ![oldoutbackowner](https://avatars.discourse-cdn.com/v4/letter/o/ce73a5/32.png) [@oldoutbackowner](https://community.cartalk.com/u/oldoutbackowner)\
**Post date:** [August 8, 2011, 10:40pm UTC](https://community.cartalk.com/t/subaru-temp-gauge-stuck-on-high/66961/3 "2011-08-08T22:40:59Z")

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What type of Subaru, year, mileage? That may or may not help folks to provide more helpful info.

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**Author:** ![oblivion](https://avatars.discourse-cdn.com/v4/letter/o/3ab097/32.png) [@oblivion](https://community.cartalk.com/u/oblivion)\
**Post date:** [August 9, 2011, 1:18am UTC](https://community.cartalk.com/t/subaru-temp-gauge-stuck-on-high/66961/4 "2011-08-09T01:18:25Z")

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When you say it ‘pegs on high’, do you mean you start it up cold and immediately the gauge goes to high, or does it gradually move to high and then stay there?

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**Author:** ![gdchavez](https://avatars.discourse-cdn.com/v4/letter/g/f19dbf/32.png) [@gdchavez](https://community.cartalk.com/u/gdchavez)\
**Post date:** [August 9, 2011, 4:32am UTC](https://community.cartalk.com/t/subaru-temp-gauge-stuck-on-high/66961/5 "2011-08-09T04:32:54Z")

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It is a 1999 Forrester with around 245, 000 miles on it. It goes to high either immediately or within a few miles.

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**Author:** ![Cougar](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cougar/32/21348_2.png) [@Cougar](https://community.cartalk.com/u/Cougar)\
**Post date:** [August 9, 2011, 8:19am UTC](https://community.cartalk.com/t/subaru-temp-gauge-stuck-on-high/66961/6 "2011-08-09T08:19:10Z")

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There are two sensors for monitoring the coolant temperature. I assume you are working on the correct one. The one for the dash gauge should have a single wire tied to it. If you have replaced the correct one already then the wire between the gauge and the sensor most likely has a ground fault on it. You will need to trace the wire and look for a problem on it. If the wire isn’t the trouble then the gauge itself has a problem.