1987 MAZDA 626 engine coolant

7C TROUBLESHOOTING
STEP 2 (STALL TEST)
This step is performed to determine if there is slippage of the friction elements or malfunction of the
hydraulic components.
Preparation
Check the following items prior to testing:
1. Engine coolant, engine oil and ATF levels.
2. Warm the engine thoroughly to raise the ATF temperature to operating level (50—80°C, 122—176°F).
3. Set the parking brake and block the front and rear of the wheels.
Pull the parking brake Water temperature
ATF
7C—14
76G07C-024

15 WARNING AND SENDER
86U15X-068
86U15X069
86U15X-070
Door Switch
1. Check for continuity of the switch with an
ohmmeter.
2. If continuity is not as specified, replace the switch.
Washer Level Sensor
1. Check for continuity between C (LY) terminal and
D (B) terminal of the washer level sensor con-
nector.
Oil Pressure Switch
1. Disconnect the connector from the oil pressure
switch.
2. Check for continuity between the switch and a
body ground with each condition.
Coolant Level Sensor
1. Remove the level sensor and connect the con-
nector.
2. With the sensor not grounded to the body, start
the engine.
3. After checking that the warning light illuminates,
ground the threaded part of the sensor.
4. If the warning light remains illuminated, the sen-
sor is faulty and replace it.
73G15X-013
15—40

Engine Continuity
Running Yes
Stop No
Terminals Float level Continuity
C (LY)—D
(B)
Bottom Yes C (LY)—D
(B)
Above bottom No

2. If continuity is not as specified, replace the sensor.

30 TECHNICAL DATA
3A. COOLING SYSTEM (GASOLINE)
Engine model F6, F8, FE SOHC
Item FE DOHC ECE, Hong Kong
Singapore Middle East General

Cooling method Water-cooled, forced circulation

Water pump

Type Centrifugal, timing belt driven
Impeller diameter mm (in) 70 (2.76)
Number
of
impeller blades 6
Speed ratio 1
:
1.00 1
:
1.05
Water seal type Unified mechanical seal

Thermostat

Type Wax, 2-stage Wax
Start
to
open °C (°F) Sub: 83.5-86.5 (182-188) Main: 86.5-89.5 (188-193) 86.5-89.5 (188-193) 80.5-83.5 (177-182)
Full open °C (°F) 100 (212) 95 (203)
Lift mm (in) Sub: 1.5 (0.06) min.
Main: 8.0 (0.31) min. 8.5 (0.33) min.

Radiator

Type Corrugated
fin

Cap opening valve pressure kPa (kg/cm2,
psi)
74-103 (0.75-1.05,
11
-15)
Cooling system pressure kPa (kg/cm2,
psi)
103 (1.05,
15)
Cooling fan

Type Electric
Capacity W MTX 80 Capacity W ATX 120
Current A MTX 5
6 7.6
Current A ATX
—
8.0-11.0
Number
of
blades 4
Outer diameter mm (in) MTX 320 (12.6) Outer diameter mm (in) ATX 340 (13.4)
Switching temperature OFF -
ON
°C(°F) 97 (207) 91 (196)

Coolant

Capacity liters (US qt, Imp
qt)
With heater 7.5 (7.9, 6.6) Capacity liters (US qt, Imp
qt)
Without heater 7.0 (7.4, 6.2)
Protection Mixture percentage (volume)
%
Specific gravity
of
mixture
at
20°C (68 °F) Antifreeze solution
Protection Water Solution
Specific gravity
of
mixture
at
20°C (68 °F) Antifreeze solution Above -16°C (3°F) 65 35 1.054
Above -26°C (-15°F) 55 45 1.066
Above -40 °C (—40°F) 45 55 1.078

30-16

TECHNICAL DATA 30
3B. COOLING SYSTEM (DIESEL)
Item Engine model RF-CX, RF-N

Cooling method Water-cooled, forced circulation

Water pump

Type Centrifugal, timing belt driven
Water seal type Unified mechanical seal

Thermostat

Type Wax, two stage
Start
to
open °C (°F) Main valve:
86.5-89.5 (188-193)
78.5-
Sub valve: 81.5 (173-179)
Full open lift mm (in)/°C (°F) Main valve: 8.0 (0.31) Sub valve: 1.5 (0.06) min./100 (212) min./100 (212)

Radiator

Type Corrugated
fin

Cap opening valve pressure kPa (kg/cm2,
psi)
74—103 (0.75—1.05,
11
-15)
Cooling circuit checking pressure kPa (kg/cm2,
psi)
103 (1.05,
15)
Cooling fan

Type Electric
Number
of
blade 4
Outer diameter mm (in) 340 (13.4)
Switching temperature OFF -»
ON
°C (°F) 91 (196)
Voltage V 12
Capacity W-A 120-8.0-11.0

Coolant

Capacity liters (US qt, Imp
qt)
With heater 9.5 (10.0, 8.4) Capacity liters (US qt, Imp
qt)
Without heater 9.0 (9.5, 7.9)
Protection Mixture percentage (Volume) Specific gravity
of
mixture
at
20°C (68 °F) Antifreeze solution
Protection Water Solution
Specific gravity
of
mixture
at
20°C (68 °F) Antifreeze solution Above -16°C (3°F) 65 35 1.054
Above -26°C (-15°F) 55 45 1.066
Above -40°C (-40°F) 45 55 1.078

30-17