Nissan Sentra Service Manual: Thermostat and thermostat housing
Exploded View

- Thermostat housing
- Gasket
- Rubber ring
- Thermostat
- Water inlet
- Clamp
- Radiator hose (upper)
- To radiator
WARNING:
Do not remove the radiator cap when the engine is hot. Serious burns
could occur from high-pressure
engine coolant escaping from the radiator. Wrap a thick cloth around the cap.
Slowly push down and
turn it a quarter turn to allow built-up pressure to escape. Carefully remove
the cap by pushing it down
and turning it all the way.
NOTE:
When removing components such as hoses, tubes/lines, etc., cap or plug
openings to prevent fluid from spilling.
Removal and Installation of Thermostat
REMOVAL
- Remove engine under cover. Refer to EXT-16, "Exploded View".
- Drain engine coolant from radiator. Refer to CO-12, "Changing Engine
Coolant".
CAUTION:
- Perform this step when the engine is cold.
- Do not spill engine coolant on the drive belt.
- Disconnect radiator hose (lower) from water inlet side. Refer to CO-15,
"Exploded View".
- Remove water inlet bolts, then remove water inlet and thermostat.
Inspection after removal
- Place a thread (A) so that it is caught in the valves of the thermostat
(1). Immerse fully in a container (B) filled with water. Heat
while stirring.
- The valve opening temperature is the temperature at which the
valve opens and the thermostat falls from the thread.
- Continue heating. Check the full-open lift amount.
NOTE:
The full-open lift amount standard temperature for the thermostat is
the reference value.
- After checking the full-open lift amount, lower the water temperature
and check the valve closing temperature.


- If valve setting at measured values are out of standard range,
replace thermostat.
Installation
Installation is in the reverse order of removal.
- Install the thermostat with the whole circumference of the flange
(A) fitting securely inside the rubber ring (1).
CAUTION:
Do not reuse rubber ring.

- Install the thermostat (2) into the thermostat housing (1) with the
jiggle valve (A) facing upwards. The position deviation may be
within the range of В±10В°.
- After installation, refill engine coolant and check for leaks. Refer to
CO-12, "Changing Engine Coolant" and CO-11, "System Inspection".

Removal and Installation of Thermostat Housing
REMOVAL
- Remove the generator. Refer to CHG-29, "Removal and Installation".
- Partially remove the fender protector (LH). Refer to EXT-28, "FENDER
PROTECTOR : Removal and
Installation - Front Fender Protector".
- Remove the thermostat housing bolts, then remove the thermostat housing.
- Remove thermostat if necessary. Refer to CO-21, "Removal and
Installation of Thermostat".
- Remove water pump if necessary. Refer to CO-19, "Removal and
Installation".
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
- Do not reuse gasket
- Do not spill engine coolant on the drive belt.
Inspection
INSPECTION AFTER INSTALLATION
After installation, refill engine coolant and check for leaks. Refer to
CO-11, "System Inspection" and CO-12,
"Changing Engine Coolant".
Exploded View
Gasket
Water pump
WARNING:
Do not remove the radiator cap when the engine is hot. Serious burns
could occur from high-pressure
engine coolant escaping from the radiator. ...
Exploded View
CVT MODELS
Water control valve
Rubber ring
Radiator hose (upper)
Clamp
Water outlet
CVT oil warmer hose (outlet)
Heater hose (inlet)
Heater hose (outlet)
Electr ...
Other materials:
Excessive abs function operation
frequency
Diagnosis Procedure
1.CHECK START
Check front and rear brake force distribution using a brake
tester.
Is the inspection result normal?
YES >> GO TO 2
NO >> Check brake system.
2.CHECK FRONT AND REAR AXLE
Make sure that there is no excessive play in the front and rear
axles. ...
P0850 PNP Switch
Description
For CVT models, transmission range switch is turn ON when the selector lever
is P or N.
For M/T models, park/neutral position (PNP) range switch is ON when the selector
lever is Neutral position.
ECM detects the position because the continuity of the line (the ON) exists.
DTC ...
P0127 IATSensor
DTC Logic
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0127
IAT SENSOR-B1
(Intake air temperature too high)
Rationally incorrect voltage from the sensor is
sent to ECM, compared with the ...
© 2014-2025 Copyright www.nisentra.com