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Customer Interest for Thermostat: > < Instruments - Temperature Gauge Overshoot
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Thermostat: All Technical Service Bulletins
Instruments - Temperature Gauge Overshoot

REFERENCE  ENGINE NUMBER  029 (REVISED) DATE  03-27-87 MODEL  RA, RN
TITLE - 22R-E ENGINE TEMPERATURE OVERSHOOT

Double Valve Thermostat

Some 1984 pickup trucks and 1983-1984 Celica models, equipped with 22R-E engines, may experience a condition called "temperature gauge
overshoot". After starting a cold engine the temperature gauge will indicate a higher than normal engine temperature for a short time just prior to the
thermostat opening. After the thermostat opens, the temperature gauge will return to the normal range. A new double valve thermostat has been made
available to reduce temperature gauge overshoot. (See illustration below)

Affected Vehicles

From

To

JT2RA64*#*0009167 - JT2RA64*#*0057774 JT2RA64*#*6113139 - JT2RA64*#*6233178 JT2RA65*#*0000001 - JT2RA65*#*0007764
JT2RA65*#*4000001 - JT2RA65*#*4046703 JT4RN50S#E0000001 - JT4RN50S#E0042296 JT4RN50S#E5000001 - JT4RN50S#E5000946
JT4RN55S#E0000001 - JT4RN55S#E0074963 JT4RN55S#E5000001 - JT4RN55S#E5027591

PART NUMBER INFORMATION

Previous Part No.

New Part No.

Part Name

*

90916-03055                90916-03070               Thermostat

*

16341-35010                Same                      Gasket, Water Outlet

*

Parts are interchangeable

Customer Interest for Thermostat: > < Instruments - Temperature Gauge Overshoot