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Eric
Eric, Automotive Repair Shop Manager
Category: Toyota
Satisfied Customers: 30848
Experience:  20+ yrs. experience as repair shop manager and technician.
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Toyota Corolla Where is the location of the engine coolant

This answer was rated:

Where is the location of the engine coolant temperature sensor in a 1998 Toyota Corolla LE?
Hi,

I am showing it tucked in behind the exhaust manifold:

  1. Disconnect the air/fuel ratio sensor connector.
  2. Remove the four bolts that retains the exhaust manifold heat insulator.

    Click image to see an enlarged view

    Fig. Removal of the exhaust manifold

  3. Remove the five nuts and then the exhaust manifold
  4. To prevent possible damage, remove the gasket from the cylinder head.

    Click image to see an enlarged view

    Fig. Removal of the Engine Coolant Temperature (ECT) Sensor

I am showing it tucked in behind the exhaust manifold:

  1. Disconnect the air/fuel ratio sensor connector.
  2. Remove the four bolts that retains the exhaust manifold heat insulator.

    Click
    View Full Image

    Fig. Removal of the exhaust manifold

  3. Remove the five nuts and then the exhaust manifold
  4. To prevent possible damage, remove the gasket from the cylinder head.

    Click
    View Full Image

    Fig. Removal of the Engine Coolant Temperature (ECT) Sensor

Customer: replied 5 years ago.
How many pins are on this coolant temperature sensor?
Hi,

it is a 2 pin sensor
Customer: replied 5 years ago.
Okay thanks for responding. In front of the driver's side just to the right of the top radiator hose there is a 3 pin sensor. What sensor is this?
Hi,

which one #1 or #2 in below diagram:

graphic
Hi,

my mistake. looked at wrong one. it is a 3 prong sensor. the end where the connector fits is almost tri-angular in shape:

graphic
Customer: replied 5 years ago.
Yes, that's why i asked the question.Would you know the oem part # XXXXX the sensor?
Hi,

did you get my last post. the one nearest the top radiator hose is the ect sensor. I looked up wrong one. IT IS A 3 pin sensor.

The one you are seeing is the ECT sensor.

sorry, dont have the OEM part number handy.
Eric and 3 other Toyota Specialists are ready to help you
Customer: replied 5 years ago.
Thanks for the clarification. I will now accept.