2004 DAEWOO NUBIRA Service Repair Manual

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Page 849 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual ENGINE CONTROLS 1F – 603
DAEWOO V–121 BL4
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

Page 850 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual 1F – 604IENGINE CONTROLS
DAEWOO V–121 BL4
4. Disconnect the coolant hose from the throttle body.
5. Disconnect the throttle cables by opening the re-
lease slot.
6. Disconnect the main throttle

Page 851 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual ENGINE CONTROLS 1F – 605
DAEWOO V–121 BL4
5. Disconnect the throttle cables by opening the
throttle and moving the cable through the release
slot.
6. Disconnect the vacuum hoses from the thrott

Page 852 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual 1F – 606IENGINE CONTROLS
DAEWOO V–121 BL4
7. Connect the TP sensor connector and the IAC
valve connector.
8. Connect the coolant hoses to the throttle body.
9. Connect the vacuum hoses to the t

1F – 606IENGINE CONTROLS
DAEWOO V–121 BL4
7. Connect the TP sensor connector and the IAC
valve connector.
8. Connect the coolant hoses to the throttle body.
9. Connect the vacuum hoses to the throttle body.
Important : Make sure the throttle/cruise control cables
do not hold the throttle open. With the engine off, check to
see that the accelerator pedal is free.
10. Connect the throttle cable.
11. Install the air intake tube.
12. Connect the breather hose to the valve cover.
13. Connect the IAT sensor connector.
14. Connect the negative battery cable.
15. Fill the cooling system.
FRONT HEATED OXYGEN SENSOR
(HO2S1) (1.4L/1.6L DOHC)
Removal Procedure
1. Disconnect the negative battery cable.
Notice : The oxygen sensor uses a permanently attached
pigtail and connector. This pigtail should not be removed
from the oxygen sensor. Damage or removal of the pigtail
or the connector could affect proper operation of the oxy-
gen sensor. Take care when handling the oxygen sensor.
Do not drop the oxygen sensor.
2. Disconnect the front heated oxygen sensor
(HO2S1) connector.
Notice : The oxygen sensor may be difficult to remove
when engine temperature is below 48°C (120°F). Exces-
sive force may damage threads in the exhaust manifold.
3. Carefully remove the HO2S1 from the exhaust
manifold.
Installation Procedure
Important : A special anti–seize compound is used on the
oxygen sensor threads. This compound consists of a liq-
uid graphite and glass beads. The graphite will burn away,
but the glass beads will remain, making the sensor easier
to remove. New or service sensors will already have the
compound applied to the threads. If a sensor is removed
from any engine and if for any reason it is to be reinstalled,
the threads must have anti–seize compound applied be-
fore reinstallation.
1. Coat the threads of the HO2S1 with an anti–seize
compound, if needed.
2. Install the HO2S1 into the exhaust manifold.
Tighten
Tighten the oxygen sensor to 42 NSm (31 lb–ft).
3. Connect the HO2S1 connector.
4. Connect the negative battery cable.

Page 853 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual ENGINE CONTROLS 1F – 607
DAEWOO V–121 BL4
FRONT HEATED OXYGEN SENSOR
(HO2S1) (1.8L DOHC)
Removal Procedure
1. Disconnect the negative battery cable.
Notice : The oxygen sensor (O2S) uses a perma

Page 854 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual 1F – 608IENGINE CONTROLS
DAEWOO V–121 BL4
3. Remove the heated oxygen sensor.
Installation Procedure
1. Install the rear heated oxygen sensor.
Tighten
Tighten the heated oxygen sensor to 42 NSm

Page 855 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual ENGINE CONTROLS 1F – 609
DAEWOO V–121 BL4
Installation Procedure
1. Install the IAT sensor.
Tighten
Tighten the IAT sensor to 22 NSm (16 lb–ft).
2. Connect the IAT sensor connector.
3. Conn

Page 856 of 2643

DAEWOO NUBIRA 2004 Service Repair Manual 1F – 610IENGINE CONTROLS
DAEWOO V–121 BL4
Notice : Do not use methyl ethyl ketone because it can
damage the parts.
6. Clean the IAC valve O–ring seal area, the pintle
valve seat, and the air pa

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