Cannot locate coolant temp sensor
My car has a manual transmission.
On the 2002 Celica, the Engine Coolant Temperature Sensor is not directly accessible and thus requires about 2 hours of labor to remove components including the exhaust manifold bolted to the cylinder head. That is tricky because you have to be careful not to break the manifold mounting studs which are usually rusted and possibly not even re-usable. When the manifold is put back on a new gasket must be applied and the manifold mounting nuts have to be evenly tightened, in a sequence (per the manual), with a calibrated torque wrench otherwise you will have exhaust leaks at the manifold. Toyota special service tool no. 09817-33190 (or equivalent) is used to remove the Engine Coolant Temperature Sensor itself once access is gained. If you desire testing and/or replacement of this sensor, please use YourMechanic’s Engine Coolant Temperature Sensor Service Page and the responding certified mechanic will get this resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.
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