Block Heater Wiring; Engine Coolant Temperature (Ect) Sensor - Ford Thunderbird Manual

03-03- 18
REMOVAL AND INSTALLATION (Continued)
Installation
1 . Make sure 0-ring is in groove on stem of radiator
draincock.
2. Water-saturate radiator draincock in order to wet
0-ring.
3. Push the radiator draincock into the radiator inlet
tank opening until it snaps into place.
4. lighten the radiator draincock by turning
clockwise to 1 .0 N·m (8 lb-in).
Water Temperature Indicator Sender Unit
3.8L Engi ne
Removal
1 . Partially drain engine cooling system as
�
described.
2. Disconnect engine control sensor wiring
( 1 2A58 1 ) from water temperature indicator
sender unit ( 1 0884).
3. Remove water temperature indicator sender unit.
Installation
Follow removal procedure in reverse order.
1 .
2. lighten water temperature indicator sender unit
to 1 2- 1 6 N·m (106- 1 4 1 1b-in).
4.6L Engine
Removal
1 . Drain engine cooling system as described.
2. Disconnect fuel charging wiring (9D930) from
water temperature indicator sender unit.
3. Remove water temperature indicator sender unit
from upper intake manifold (9424).
Installation
1 . Follow removal procedure in reverse order.
2. lighten water temperature indicator sender unit
to 1 6-23 N·m ( 1 2- 1 7 1b-ft).

Engine Coolant Temperature (ECT) Sensor

Refer to Section 03- 1 4.
Engine Cooling

Block Heater Wiring

Removal
1 . Raise vehicle on hoist. Refer to Section QQ-02.
2. Disconnect block heater power cable from block
heater (6A05 1 ).
3. Lower vehicle.
4. Disconnect block heater power cable retainer (if
equipped) and remove block heater power cable
from vehicle.
Installation
1 . Follow removal procedure in reverse order.
2. NOTE: Make sure power cable is routed and
secured away from rotating or hot components.
Block Heater
Removal
1 . Open hood ( 1 66 1 2) and install protective fender
covers.
2. Disconnect battery ground cable ( 1 4301 ). Refer
to Section 1 4-Q 1 .
3. WARNING: NEVER REMOVE THE PRESSURE
RELIEF CAP UNDER ANY CONDITIONS WHILE
THE ENGINE IS OPERATING. FAILURE TO
FOLLOW THESE INSTRUCTIONS COULD
RESULT IN DAMAGE TO THE COOLING
SYSTEM OR ENGINE AND/OR PERSONAL
INJURY. TO AVOID HAVING SCALDING HOT
COOLANT OR STEAM BLOW OUT OF THE
COOLING SYSTEM, USE EXTREME CARE
WHEN REMOVING THE PRESSURE RELIEF
CAP FROM A HOT COOLING SYSTEM. WAIT
UNTIL THE ENGINE HAS COOLED, THEN
WRAP A THICK CLOTH AROUND THE
PRESSURE RELIEF CAP AND TURN IT
SLOWLY TO THE FIRST STOP. STEP BACK
WHILE THE PRESSURE IS RELEASED FROM
THE COOLING SYSTEM. WHEN IT IS
CERTAIN ALL THE PRESSURE HAS BEEN
RELEASED, PRESS DOWN ON THE
PRESSURE RELIEF CAP (STILL WITH A
CLOTH), TURN AND REMOVE.
Drain radiator (8005) as described.
4. Disconnect block heater power cable from block
heater (6A05 1 ).
5. Loosen retaining screw and pry block heater from
cylinder blocks (60 1 0) while moving retaining
screw from side to side to disengage clamp
strap.
6. Remove block heater while noting the position of
heating element.
7. Remove block heater power cable.
Installation
1 . Clean the inside diameter of the cylinder block
hole machined surface. Remove any burrs at the
hole entrance to avoid damage to the 0-ring.
03-03- 1 8
1997 Thunderbird, Cougar July 1 996