How to locate and replace the coolant temperature sensor on Toyota MR2?

Search for the coolant temperature sensor; you will mount it on the front side of the cylinder head rear cover but it will screw in. For evaluating the characteristics of the sensor, the connector has to be disconnected, and the resistance between both terminals has to be checked, which will decrease with the increasing coolant temperature, allowing for the evaluation of the sensor's function. If the above monitoring is not effective, then the sensor should be changed. Remove the coolant or accept the fact that you are going to spill some of the liquid, then undo the screw on the sensor. To fix this new sensor, screw it in and make sure it is very tight, then cover the threads with teflon tape to avoid leakage.

Genuine Toyota MR2 Coolant Temperature Sensor

Coolant Water Temperature Sensor

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

7 Coolant Temperature Sensors found

View related parts
Toyota MR2 Water Temperature Sensor
Part Number: 89422-20010
$69.02 MSRP: $97.29
You Save: $28.27 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Water Temperature (For E.F.I.)
- Manufacturer Note: ENGINE BLOCK
- Comment: (FOR E.F.I.)
- Warranty: This genuine Toyota part is covered by warranty.
Fits the following Vehicles:
- 1988-1995 Toyota MR2 | GT, Super Charger | 4 Cyl 1.6L, 4 Cyl 2.0L, 4 Cyl 2.2L | 3SGTE, 4AGELC, 4AGZE, 5SFE; AW11L-WCMQFA, AW11L-WCMQFK, AW11L-WCPQFA, AW11L-WCPQFK, AW11L-WJMQFA, AW11L-WJMQFK, AW11L-WJMQRA, AW11L-WJMQRK, AW11L-WJPQFA, AW11L-WJPQRA, SW20L-ACMZZA, SW20L-AJMZZA, SW20L-AJMZZK, SW21L-ACMZKA, SW21L-ACPZKA, SW21L-AJMZKA, SW21L-AJMZKK, SW21L-AJPZKA
View related parts
Toyota MR2 Engine Coolant Temperature Sender
Part Number: 89428-28030
$130.56 MSRP: $185.61
You Save: $55.05 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Switch, Water Temperature (For E.F.I); Coolant Temperature Sensor
- Comment: (FOR E.F.I)
- Warranty: This genuine Toyota part is covered by warranty.
Fits the following Vehicles:
- 1985-1988 Toyota MR2 | GT, Super Charger | 4 Cyl 1.6L | 4AGELC, 4AGZE; AW11L-WCMQFA, AW11L-WCMQFK, AW11L-WCPQFA, AW11L-WCPQFK, AW11L-WJMQFA, AW11L-WJMQFK, AW11L-WJMQRA, AW11L-WJMQRK, AW11L-WJPQFA, AW11L-WJPQRA
View related parts
Toyota MR2 Temperature Detect Switch
Part Number: 89428-33010
$142.03 MSRP: $201.91
You Save: $59.88 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Switch, Temperature Detect, NO.2
- Warranty: This genuine Toyota part is covered by warranty.
Fits the following Vehicles:
- 1992-1994 Toyota MR2 | 4 Cyl 2.0L, 4 Cyl 2.2L | 3SGTE, 5SFE; SW20L-ACMZZA, SW20L-AJMZZA, SW20L-AJMZZK, SW21L-ACMZKA, SW21L-ACPZKA, SW21L-AJMZKA, SW21L-AJMZKK, SW21L-AJPZKA
View related parts
Toyota MR2 Water Temperature Sensor
Part Number: 89422-30020
$87.31 MSRP: $123.07
You Save: $35.76 (30%)
ADD TO CART
Product Specifications
- Other Name: Sensor, Water Temperature (For E.F.I.)
- Manufacturer Note: NO.1
- Comment: (FOR E.F.I.)
- Replaced by: 89422-12010
- Warranty: This genuine Toyota part is covered by warranty.
Fits the following Vehicles:
- 1985-1989 Toyota MR2 | GT, Super Charger | 4 Cyl 1.6L | 4AGELC, 4AGZE; AW11L-WCMQFA, AW11L-WCMQFK, AW11L-WCPQFA, AW11L-WCPQFK, AW11L-WJMQFA, AW11L-WJMQFK, AW11L-WJMQRA, AW11L-WJMQRK, AW11L-WJPQFA, AW11L-WJPQRA
View related parts
Toyota MR2 Temperature Detect Switch
Part Number: 89428-15030
$126.69 MSRP: $180.11
You Save: $53.42 (30%)
Product Specifications
- Other Name: Switch, Temperature Detect, NO.2
- Warranty: This genuine Toyota part is covered by warranty.
Fits the following Vehicles:
- 1985-1993 Toyota MR2 | GT, Super Charger | 4 Cyl 1.6L, 4 Cyl 2.0L, 4 Cyl 2.2L | 3SGTE, 4AGELC, 4AGZE, 5SFE; AW11L-WCMQFA, AW11L-WCMQFK, AW11L-WCPQFA, AW11L-WCPQFK, AW11L-WJMQFA, AW11L-WJMQFK, AW11L-WJMQRA, AW11L-WJMQRK, AW11L-WJPQFA, AW11L-WJPQRA, SW20L-ACMZZA, SW20L-AJMZZA, SW20L-AJMZZK, SW21L-ACMZKA, SW21L-ACPZKA, SW21L-AJMZKA, SW21L-AJMZKK, SW21L-AJPZKA
View related parts
Toyota MR2 Thermo Switch Assembly
Part Number: 88625-17011
$68.27 MSRP: $96.24
You Save: $27.97 (30%)
Product Specifications
- Other Name: Thermo Switch Assy; Fan Switch
- Warranty: This genuine Toyota part is covered by warranty.
Fits the following Vehicles:
- 1992-1995 Toyota MR2 | 4 Cyl 2.0L, 4 Cyl 2.2L | 3SGTE, 5SFE; SW20L-ACMZZA, SW20L-AJMZZA, SW20L-AJMZZK, SW21L-ACMZKA, SW21L-ACPZKA, SW21L-AJMZKA, SW21L-AJMZKK, SW21L-AJPZKA
View related parts
Toyota MR2 Thermistor
Part Number: 88625-17010
Product Specifications
- Other Name: Switch, Temperature Detect, NO.2; Fan Switch
- Warranty: This genuine Toyota part is covered by warranty.
Fits the following Vehicles:
- 1985-1993 Toyota MR2 | GT, Super Charger | 4 Cyl 1.6L, 4 Cyl 2.0L, 4 Cyl 2.2L | 3SGTE, 4AGELC, 4AGZE, 5SFE; AW11L-WCMQFA, AW11L-WCMQFK, AW11L-WCPQFA, AW11L-WCPQFK, AW11L-WJMQFA, AW11L-WJMQFK, AW11L-WJMQRA, AW11L-WJMQRK, AW11L-WJPQFA, AW11L-WJPQRA, SW20L-ACMZZA, SW20L-AJMZZA, SW20L-AJMZZK, SW21L-ACMZKA, SW21L-ACPZKA, SW21L-AJMZKA, SW21L-AJMZKK, SW21L-AJPZKA

Toyota MR2 Coolant Temperature Sensor

The Toyota MR2 engine Coolant Temperature Sensor monitors the heat level of your engine's coolant and sends real-time information to the engine control module. The Coolant Temperature Sensor, comprised of a thermistor having a negative temperature coefficient, is united with coolant for contact. As the temperature rises, its electrical resistance falls, which affects the reference voltage return sent by the control module of 5 volts. The Coolant Temperature Sensor supplies information to the vehicle's control logic and, where fitted, the temperature gauge. Using this signal, the computer determines the coolant temperature and adjusts several functions. It increases the injector pulse width for a richer mixture when cold, reduces it as the MR2 warms, increases idle speed, and activates the electric cooling fan as necessary. Data regarding temperature permits the exhaust gas recirculation system, the evaporative purge valve, and the torque converter clutch solely after the engine warms, enabling the Toyota MR2 to run smoothly and inhibit overheating. A trusted Coolant Temperature Sensor is necessary to allow the MR2 to operate within Toyota limits since interference with control can be caused by faulty output from the Coolant Temperature Sensor.

If you are in demand for superior quality and affordable OEM Toyota MR2 Coolant Temperature Sensor, then shop with us! We own a wide range of the reduced-priced genuine Toyota MR2 Coolant Temperature Sensor. You can purchase in confidence as all parts come with a manufacturer's warranty. Any issues with our products? No need to worry as we have a hassle-free return policy to guide you every step of the way.

Toyota MR2 Coolant Temperature Sensor Parts Questions & Experts Answers

Engine Coolant Temperature Sender
89428-28030
Q: How to locate and replace the coolant temperature sensor on Toyota MR2?
A:
Search for the coolant temperature sensor; you will mount it on the front side of the cylinder head rear cover but it will screw in. For evaluating the characteristics of the sensor, the connector has to be disconnected, and the resistance between both terminals has to be checked, which will decrease with the increasing coolant temperature, allowing for the evaluation of the sensor's function. If the above monitoring is not effective, then the sensor should be changed. Remove the coolant or accept the fact that you are going to spill some of the liquid, then undo the screw on the sensor. To fix this new sensor, screw it in and make sure it is very tight, then cover the threads with teflon tape to avoid leakage.