O2 sensor SUBARU LEGACY 1999 Service Manual PDF

10) Connect connectors to fuel injectors and
purge control solenoid valve.
11) Hold engine harness by harness bands.
B2M2348A
(A) Fuel injector
(B) Purge control solenoid valve
(C) Harness band
12) Assemble throttle body to intake manifold.
CAUTION:
Replace gasket with a new one.
Tightening torque:
22
±2 N´m (2.2±0.2 kg-m, 15.9±1.4 ft-lb)
B2M2305
13) Connect connectors to throttle position sensor
(A) and idle air control solenoid valve (B).
B2M2357A
14) Install ignition coil and ignitor assembly.
15) Connect connector to ignition coil and ignitor
assembly.
B2M2345
16) Install engine ground terminal to intake mani-
fold.
Tightening torque:
19
±1.5 N´m (1.9±0.15 kg-m, 13.7±1.1 ft-lb)
B2M2779
3. 2500 cc MODEL
1) Install EGR solenoid valve and purge control
solenoid valve.
2) Install fuel injector pipes.
B2M1726
46
2-7[W4C3]SERVICE PROCEDURE
4. Intake Manifold

3) Assemble fuel pipes, etc. to intake manifold.
B2M0161D
(A) Pressure regulator
(B) Fuel pipe ASSY
4) Install ignition coil.
B6M0867
5) Assemble throttle body to intake manifold.
CAUTION:
Replace gasket with a new one.
Tightening torque:
22
±2 N´m (2.2±0.2 kg-m, 15.9±1.4 ft-lb)
B2M0157
6) Install idle air control solenoid valve to intake
manifold.
CAUTION:
Replace gasket with a new one.
Tightening torque:
6.4
±0.5 N´m (0.65±0.05 kg-m, 4.7±0.4 ft-lb)
H2M1247
7) Install engine harness onto intake manifold.
8) Connect connectors to throttle position sensor,
ignition coil, fuel injectors, idle air control solenoid
valve, purge control solenoid valve and EGR sole-
noid valve.
B2M0347C
(A) EGR solenoid valve
(B) Throttle position sensor
(C) Idle air control solenoid valve
(D) Purge control solenoid valve
(E) Harness band
9) Install EGR valve.
CAUTION:
Replace gasket with a new one.
Tightening torque:
19
±1.5 N´m (1.9±0.15 kg-m, 13.7±1.1 ft-lb)
10) Install BPT with BPT holder bracket.
47
[W4C3]2-7SERVICE PROCEDURE
4. Intake Manifold

11) Connect BPT hoses from EGR solenoid valve
and intake manifold.
12) Connect back pressure hose from pipe.
13) Connect EGR vacuum hose from EGR valve.
B2M1727
14) Connect engine ground terminal to intake
manifold.
Tightening torque:
19
±1.5 N´m (1.9±0.15 kg-m, 13.7±1.1 ft-lb)
B2M1724
D: INSTALLATION
1. 2200 cc CALIFORNIA SPEC. VEHICLES
1) Install intake manifold onto cylinder heads.
CAUTION:
Always use new gaskets.
Tightening torque:
25
±2 N´m (2.5±0.2 kg-m, 18.1±1.4 ft-lb)
B2M2318
2) Connect fuel hoses.
S2M0500
3) Connect connector to oil pressure switch.
B2M1253A
4) Connect connector to crankshaft position sen-
sor.
B2M1252A
5) Connect connector to camshaft position sensor.
B2M2317B
48
2-7[W4D1]SERVICE PROCEDURE
4. Intake Manifold

6) Connect knock sensor connector.
B2M2327A
7) Connect connectors to engine coolant tempera-
ture sensor (A) and thermometer (B).
B2M0345B
8) Hold engine harness connector onto bracket.
9) Install air cleaner case stay RH and engine har-
ness bracket, and connect engine harness con-
nectors to bulkhead connectors.
B2M2315
10) Connect brake booster hose.
B2M2314
11) Connect engine coolant hose to throttle body.
B2M2299
12) Connect PCV hose (A) and pressure regulator
vacuum hose (B) to intake manifold.
B2M2313
13) Connect spark plug cords to ignition coil and
ignitor assembly.
B2M2312
14) Install fuel protector LH. (LHD model only)
B2M2754
49
[W4D1]2-7SERVICE PROCEDURE
4. Intake Manifold

19) Install air cleaner case and air intake duct as
a unit.
B2M2773
20) Tighten bolt which installs air intake duct (A)
on the front side of body.
Tightening torque:
7.4
±2.0 N´m (0.75±0.2 kg-m, 5.4±1.4 ft-lb)
B2M2283A
21) Tighten bolt which installs air intake duct (B)
on body.
Tightening torque:
7.4
±2.0 N´m (0.75±0.2 kg-m, 5.4±1.4 ft-lb)
B2M2284A
22) Tighten bolts which install air cleaner case to
stays.
Tightening torque:
4.9
±0.5 N´m (0.5±0.05 kg-m, 3.6±0.4 ft-lb)
B2M2349
23) Connect connector to intake air temperature
sensor.
B2M2285
24) Connect connector to fuel pump.
B2M0047
25) Install fuel filler cap.
B2M1746
51
[W4D1]2-7SERVICE PROCEDURE
4. Intake Manifold

26) Connect battery ground cable.
B2M1723
2. 2200 cc EXCEPT CALIFORNIA SPEC.
VEHICLES
1) Install intake manifold onto cylinder heads.
CAUTION:
Always use new gaskets.
Tightening torque:
25
±2 N´m (2.5±0.2 kg-m, 18.1±1.4 ft-lb)
B2M2318
2) Connect fuel hoses.
S2M0500
3) Connect connector to oil pressure switch.
B2M1253A
4) Connect connector to crankshaft position sen-
sor.
B2M1252A
5) Connect connector to camshaft position sensor.
B2M2317B
6) Connect knock sensor connector.
B2M2327A
52
2-7[W4D2]SERVICE PROCEDURE
4. Intake Manifold

7) Connect connectors to engine coolant tempera-
ture sensor (A) and thermometer (B).
B2M0345B
8) Install air intake chamber stay RH and engine
harness bracket, and connect engine harness con-
nectors to bulkhead connectors.
B2M2315
9) Connect brake booster hose.
B2M2314
10) Connect engine coolant hose to throttle body.
B2M2304
11) Connect PCV hose (A) and vacuum hose (B)
to intake manifold.
H2M2440A
12) Connect spark plug cords to ignition coil and
ignitor assembly.
B2M2312
13) Install fuel pipe protector LH. (LHD model)
B2M2754
14) Install fuel pipe protector RH. (RHD model)
B2M2755
15) Install power steering pump on bracket.
53
[W4D2]2-7SERVICE PROCEDURE
4. Intake Manifold

18) Install air cleaner upper cover, air intake duct
and air intake chamber as a unit.
B2M2347
CAUTION:
Before installing air cleaner upper cover, align
holes with protruding portions of air cleaner
lower case, then secure upper cover to lower
case.
S2M0180
19) Tighten bolts which install air intake chamber
to stays.
Tightening torque:
4.9
±0.5 N´m (0.5±0.05 kg-m, 3.6±0.4 ft-lb)
B2M2770
20) Connect connector to mass air flow sensor.
B2M2018
21) Connect connector to fuel pump.
B2M0047
22) Install fuel filler cap.
B2M1746
23) Connect battery ground cable.
B2M1723
55
[W4D2]2-7SERVICE PROCEDURE
4. Intake Manifold

3. 2500 cc MODEL
1) Install intake manifold onto cylinder heads.
CAUTION:
Always use new gaskets.
Tightening torque:
25
±2 N´m (2.5±0.2 kg-m, 18.1±1.4 ft-lb)
S2M0091
2) Connect fuel hoses.
S2M0090A
3) Connect connector to oil pressure switch.
B2M1253A
4) Connect connector to crankshaft position sen-
sor.
B2M1252A
5) Connect connector to camshaft position sensor.
S2M0183
6) Connect knock sensor connector.
B2M1243A
7) Connect connectors to engine coolant tempera-
ture sensor (A) and thermometer (B).
B2M0345B
56
2-7[W4D3]SERVICE PROCEDURE
4. Intake Manifold

CAUTION:
Before installing air cleaner upper cover, align
holes with protruding portions of air cleaner
lower case, then secure upper cover to lower
case.
S2M0180
20) Tighten bolts which install air intake chamber
to stays.
Tightening torque:
4.9
±0.5 N´m (0.5±0.05 kg-m, 3.6±0.4 ft-lb)
S2M0092
21) Connect connector to mass air flow sensor.
B2M1225A
22) Connect connector to fuel pump.
B2M0047
23) Install fuel filler cap.
B2M1746
24) Connect battery ground cable.
B2M1723
59
[W4D3]2-7SERVICE PROCEDURE
4. Intake Manifold