2006 ACURA CSX sensor


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Exploded View - K20Z3 engine
9-6Intake Manifold and Exhaust System
Intake Manifold Removal and Installation (cont’d)
JOINT
GASKET
5x0.8mm
3.4 N·m
(0.35 kgf·m, 2.5 lbf·ft)
8 x 1.25 mm
22 N·m
(2.2 kgf·m, 16 lbf·ft) GASKET
O-RING
MANIFOLD ABSOLUTE
PRESSURE (MAP) SENSOR
INTAKE MANIFOLD BRACKET
INTAKE MANIFOLD
THROTTLE BODY
8x1.25mm
22 N·m
(2.2 kgf·m, 16 lbf·ft) 8x1.25mm
22 N·m
(2.2 kgf·m, 16 lbf·ft)
MARK
INTAKE AIR BYPASS (IAB)
THERMAL VALVE
Replace.
Replace.
Replace.
Replace if cracked or if
mating surface is damaged. Tighen the valve to 15 N·m
(1.5 kgf·m, 11 lbf·ft), then turn the
valve joint toward the mark.
08/08/21 14:37:33 61SNR030_090_0006
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Removal - K20Z3 engine
9-7
A
B C A
B
C
A B
C
1. Remove the engine cover.
2. Relieve the fuel pressure (see page 11-322).
3. Disconnect the vacuum hose (A) and the breather
pipe (B), then remove the intake air duct (C). 4. Disconnect the following engine wire harness
connectors, and remove the wire harness clamps
from the intake manifold:
 Four fuel injector connectors
 Manifold absolute pressure (MAP) sensor connector
 Throttle actuator connector
5. Remove the ground cable (A) and the harness clamp bracket (B), then remove the harness holder
(C) from the bracket.
6. Disconnect the positive crankcase ventilation (PCV) hose (A), the evaporative emission (EVAP) canister
hose (B) and the brake booster vacuum hose (C).
(cont’d)
08/08/21 14:37:34 61SNR030_090_0007
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DYNOMITE -2009-

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9-10Intake Manifold and Exhaust System
Intake Manifold Removal and Installation (cont’d)
A
B
C
B
C
A 6x1.0mm
12 N·m (1.2 kgf·m, 8.7 lbf·ft) B
C A
6x1.0mm
12 N·m (1.2 kgf·m, 8.7 lbf·ft)
8. Connect the positive crankcase ventilation (PCV) hose (A), the evaporative emission (EVAP) canister
hose (B) and the brake booster vacuum hose (C).
9. Install the harness holder (A) to the bracket, then install the ground cable (B) and the harness clamp
bracket (C).
10. Connect the engine wire harness connectors, and install the wire harness clamps to the intake
manifold:
 Four fuel injector connectors
 Manifold absolute pressure (MAP) sensor connector
 Throttle actuator connector 11. Install the intake air duct (A), then connect the
vacuum hose (B) and breather pipe (C).
12. Install the engine cover.
13. Inspect for fuel leaks. Turn the ignition switch to ON (II) (do not operate the starter) so the fuel pump
runs for about 2 seconds and pressurizes the fuel
line. Repeat this operation three times, then check
for fuel leakage at any point in the fuel line.
14. Clean up any spilled engine coolant.
15. After installation, check that all tubes, hoses and connectors are installed correctly.
16. Refill the radiator with engine coolant, and bleed the air from the cooling system with the heater
valve open (see step 6 on page 10-8).
08/08/21 14:37:36 61SNR030_090_0010
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DYNOMITE -2009-

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K20Z2 engine
9-13
Exhaust Pipe and Muffler Replacement
6x1.0mm
10 N·m
(1.0 kgf·m, 7.2 lbf·ft) 8x1.25mm
22 N·m (2.2 kgf·m, 16 lbf·ft)
HEAT SHIELD
GASKET MUFFLER
EXHAUST PIPE B
SELF-LOCKING NUTS
10x1.25mm
33N·m(3.4kgf·m,25lbf·ft) GASKET
GASKET THREE WAY CATALYTIC CONVERTER
(TWC) ASSEMBLY
SECONDARY HEATED
OXYGEN SENSOR
(SECONDARY HO2S)
44N·m(4.5kgf·m,33lbf·ft)
AIR FUEL RATIO (A/F) SENSOR
44 N·m (4.5 kgf·m, 33 lbf·ft) 8x1.25mm
22 N·m
(2.2 kgf·m, 16 lbf·ft)
6x1.0mm
10 N·m
(1.0 kgf·m, 7.2 lbf·ft)
NOTE: Use new gaskets and self-locking nuts when reassembling.
Tighten the bolts in steps,
alternating side-to-side.
Replace.
Replace. Replace.
Replace. Tighten the bolts in steps,
alternating side-to-side.
08/08/21 14:37:38 61SNR030_090_0013
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DYNOMITE -2009-

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K20Z3 engine
9-14Intake Manifold and Exhaust System
Exhaust Pipe and Muffler Replacement (cont’d)
8 x 1.25 mm
22 N·m
(2.2 kgf·m, 16 lbf·ft)
6x1.0mm
10 N·m
(1.0 kgf·m, 7.2 lbf·ft)
8x1.25mm
22 N·m (2.2 kgf·m, 16 lbf·ft)
HEAT SHIELD
GASKET MUFFLER
EXHAUST PIPE B
SELF-LOCKING NUTS
10x1.25mm
33 N·m
(3.4 kgf·m, 25 lbf·ft)
GASKET
THREE WAY CATALYTIC CONVERTER
(TWC) ASSEMBLY
SECONDARY HEATED
OXYGEN SENSOR
(SECONDARY HO2S)
44 N·m (4.5 kgf·m, 33 lbf·ft)
AIR FUEL RATIO (A/F) SENSOR
44 N·m (4.5 kgf·m, 33 lbf·ft) GASKET
6x1.0mm
10 N·m
(1.0 kgf·m, 7.2 lbf·ft)
NOTE: Use new gaskets and self-locking nuts when reassembling.
Tighten the bolts in steps,
alternating side-to-side.
Tighten the bolts in steps,
alternating side-to-side.
Replace.
Replace.
Replace.
Replace.
08/08/21 14:37:39 61SNR030_090_0014
ProCarManuals.com
DYNOMITE -2009-

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10-2Cooling System
Component Location Index
THERMOSTAT
RADIATOR
ENGINE COOLANT TEMPERATURE
(ECT) SENSOR 2
WATER PUMP
A/C CONDENSER FAN ASSEMBLY RADIATOR FAN ASSEMBLY
WATER PASSAGE COOLANT SEPARATOR
EXHAUST GAS RECIRCULATION
(EGR) PASSAGE
Test, page 10-5
Replacement, page 10-10
Replacement,
page 10-19Inspection, page 10-6
Replacement, page 10-6
Replacement, page 10-19
Fan Motor Test, page 10-5 Replacement, page 10-19
Fan Motor Test, page 10-5
Replacement,
page 10-11 Replacement, page 10-13
08/08/21 14:39:53 61SNR030_100_0002
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DYNOMITE -2009-

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K20Z3 engine
10-3
THERMOSTAT
RADIATOR
ENGINE COOLANT TEMPERATURE
(ECT) SENSOR 2
WATER PUMP
A/C CONDENSER FAN ASSEMBLY RADIATOR FAN ASSEMBLY WATER OUTLET
COOLANT SEPARATOR
OIL COOLER
WATER PASSAGE
Test, page 10-5
Replacement, page 10-10
Replacement, page 10-19
Inspection, page 10-6
Replacement, page 10-6
Replacement, page 10-19
Fan Motor Test, page 10-5 Replacement, page 10-19
Fan Motor Test, page 10-5 Replacement, page 10-16
Replacement, page 10-11
08/08/21 14:39:56 61SNR030_100_0003
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DYNOMITE -2009-

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10-21
BA
C
A B
6x1.0mm
10 N·m (1.0 kgf·m, 7.2 lbf·ft)
A
6x1.0mm
10 N·m (1.0 kgf·m, 7.2 lbf·ft) C
9. Disconnect the engine coolant temperature (ECT)
sensor 2 connector (A), and remove the harness
clamp (B).
10. Disconnect the lower radiator hose (C) from the radiator.
11. A/T model: Disconnect the automatic transmission fluid (ATF) cooler hoses (A), then plug the lines and
the hoses. 12. Lower the vehicle on the lift.
13. Remove the condenser bracket mounting bolts (A)
and the bulkhead mounting bolts (B), then remove
the bulkhead (C).
(cont’d)
08/08/21 14:40:28 61SNR030_100_0021
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DYNOMITE -2009-