ECT sensor

Asked by countryjoe68 Nov 26, 2019 at 07:56 PM about the 1999 Toyota Corolla LE

Question type: Maintenance & Repair

had an ect sensor code come up, but the temp gauge showed in the middle.
changed the ect and the gauge shot up to red right away. changed it again and
the same thing happened, what causes this?

1 Answer
155,265

james answered 4 years ago

Sounds like the wiring going to the sensor is bad. Look for a bare spot on the wiring that's touching something metal. This will drive the temperature gauge to hot every time. Hope that helps! Jim

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