Temp gauge reading hot

Asked by Hoyacoach Jun 04, 2023 at 11:24 AM about the 1998 Lexus LS 400 RWD

Question type: Maintenance & Repair

Temperature is reading hot but have replaced timing belt, water pump,
thermostat, instrument cluster, fan clutch, hoses, coolant been flushed and
replaced , new radiator.  What am I missing?

3 Answers
307,255

Gene answered 10 months ago

Does the cooling system build pressure really fast when it is first started? I’m thinking blown head gasket. You can get a DIY kit from your local parts store or have you favorite shop do,it.

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155,245

james answered 10 months ago

Coolant temperature sensor or the wiring going to the sensor could be faulty. If you have a bare spot on the wire going to the sensor and it's touching something metal the temperature gauge will show hot. Hope that helps! Jim

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