ENGINE CONTROLS 1F – 385
DAEWOO V–121 BL4
9. Discard the O–ring.
Installation Procedure
1. Lubricate a new O–ring. Install the new O–ring onto
the fuel pressure regulator body.
2. Insert the fuel pressure regulator into the fuel rail
body.
3. Install the fuel pressure regulator retaining clamp.
Tighten
Tighten the fuel pressure regulator retaining clamp to
106 lb–in (12 NSm).
4. Connect the vacuum hose to the fuel pressure re-
gula–tor.
5. Install the air intake tube.
6. Connect the breather hose to the valve cover.
7. Connect the IAT sensor connector.
8. Connect the negative battery cable.
9. Perform a leak test of the fuel pressure regulator
with the engine off and the ignition ON.
ENGINE COOLANT TEMPERATURE
SENSOR
Removal Procedure
1. Relieve the coolant system pressure.
2. Disconnect the negative battery cable.
3. Disconnect the engine coolant temperature (ECT)
sensor connector.
Notice : Take care when handling the engine coolant tem-
perature sensor. Damage to the sensor will affect the prop-
er operation of the fuel injection system.
4. Remove the ECT sensor from the electronic ignition
(EI) system ignition coil adapter.
Installation Procedure
1. Coat the threads of the ECT sensor with sealer.
2. Install the ECT sensor into the EI system ignition
coil adapter.
Tighten
Tighten the engine coolant temperature sensor to 18
lb–ft (25 NSm).
3. Connect the ECT sensor connector.
4. Fill the coolant system.
5. Connect the negative battery cable.
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