1982 CHEVROLET CAMARO sensor

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 391
8. Remove the plenum attaching bolts and plenum. Discard the gaskets.
9. Remove the fuel rail.
10. Label and unplug the wires
from the spark plugs.
11. Label and unplug the wires at the coil.
12. Remove the distributor cap and spark plug wires.
13. Mark the distributor position and remove it.
14. Label and disconnect the emission canister hoses.
15. Remove the valve covers.
16. Remove the upper radiator hose at the manifold.
17. Unplug the coolant switch and sensor.
18. Remove the heater inlet pipe from the manifold.
19. Remove the center intake manifold bolts.
20. Remove the center intake mani fold and gasket. Discard the gasket.
21. Remove the transmission dipstick.
22. Remove the manifold bolts.
23. Remove the manifold. Discard t he gaskets and remove the RTV sealant
from the front and rear ridges of the block.
To install: 24. Apply a
3/16 in. (5mm) bead of RTV sealant on the front and rear ridges of
the block. Make sure the surfaces are clean.
25. Install the new gaskets on the cylinder heads. Hold the gaskets in place by extending the RTV bead up onto t he gasket ends. Certain GM intake
gaskets will have to be cut to be install behind the pushrods. Cut these
gaskets as required and only where necessary.
26. Install the intake m anifold along with the intake manifold bolts. Torque
bolts in sequence to 13-25 ft. lbs. ( 18-34 Nm) on 2.8L engines and 19 ft
lbs. (26 Nm) on 3.1L engines.
27. Install the center intake manifold with a new gasket. Tighten the bolts to
15 ft lbs. (21 Nm).
28. Connect the coolant switches.
29. Install the upper radiator hose.
30. Install the valve covers.
31. Install the heater inlet pipe.
32. Connect the emission canister hoses.
33. Install the distributor to the matc hmarks, hold down bolt, spark plug wires
and distributor cap.
34. Install the spark plug wires to th e spark plugs and connect the wires at
the coil.
35. Install the fuel rail.
36. Install the plenum with new gaskets . Tighten the bolts to 18 ft lbs. (25
Nm) on 2.8L engines or 15 ft lbs. (21 Nm) on 3.1L engines.
37. Install the A/C compressor-to-plenum bracket and attaching hardware.
38. Install the EGR transfer tube with a new gasket. Tighten the bolts to 19 ft
lbs. (26 Nm).
39. Install the throttle body.
40. Connect the vacuum harness and ai r inlet duct to the throttle body.
41. Install the transmission dipstick.
42. Connect and other rema ining hoses or wires.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 396

Fig. 4: Removing the attaching bolts

Fig. 5: Disconnecting the oxygen sensor

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 397

Fig. 6: Removing the exhaust manifold
1. Disconnect the negative battery cable.
2. Remove the air cleaner on carbureted engines.
3. If applicable, remove the ai r cleaner pre-heater shroud.
4. Disconnect the air injecti on reaction pipes, if equipped.
5. Unplug the oxygen sensor connector.
6. Label and unplug the spark plug wires.
7. Remove the spark plug wire heat shields, if equipped.
8. Remove any components which may interfere with removal.
9. Disconnect the exhaust pipe from the manifold and hang it from the
frame out of the way.
10. On some engines, it will be necessary to bend the locktabs from the bolt.
Remove the end bolts, then the center bolts. Remove the manifold.
A thin wall 6-point socket, sharpened at the leading edge and tapped onto the
head of the bolt, simplifies bending the locktabs.
To install:
11. Make sure the mating surfaces are clean.
12. Install a new gasket, if applicable.
13. Position the exhaust manifold onto the engine. Torque the attaching bolts
to:
• 1982-1992 V6 engines: 25 ft lbs. (34 Nm)
• 1982-1992 V8 engines: 26 ft lbs. (35 Nm)
14. Bend the locktabs over the bolts.
15. Connect the exhaust pipe to the manifold.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 398
16. Install all components removed.
17. Connect the oxygen sensor.
18. Install the spark plug wire heat shields.
19. Connect the spark plug wires.
20. If equipped, install the air
cleaner pre-heater shroud.
21. If equipped, connect the air injection reaction pipes.
22. Connect the battery.
2.5L ENGINE

Fig. 7: Exhaust manifold bol t torque sequence for 2.5L engine
1. Disconnect the negative batte ry cable at the battery.
2. Remove the air cleaner assembly , be sure to mark any disconnected
hoses for proper reinstallation.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 399
3. Unplug the oxygen sensor and disconnect the exhaust pipe from the
exhaust manifold.
4. Remove the engine oil level dipstick and tube.
5. Remove the exhaust manifold atta ching bolts and remove the manifold.
To install: 6. Position the exhaust manifold onto the engine with a new gasket. Torque
the bolts, following the correct sequenc e, to 44 ft lbs. (60 Nm).
7. Install the engine oil level dipstick tube and dipstick.
8. Connect the exhaust pipe to the exhaust manifold.
9. Engage the oxygen sensor connector.
10. Install the air cleaner assembly and connecting hoses.
11. Connect the negative battery cable at the battery.
RADIATOR
REMOVAL & INSTALLATION

Fig. 1: Removing radiator upper shield bolts

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 549

Fig. 2: Negative backpressure EGR valve
DIGITAL EGR VALVE
The digital EGR valve, used on 3.1L (VIN T) engines, is designed to control the
flow of EGR independent of intake mani fold vacuum. The valve controls EGR
flow through 3 solenoid- opened orifices, which increa se in size, to produce 7
possible combinations. When a solenoid is energized, the armature with
attached shaft and swivel pintle, is lifted, opening the orifice.
The digital EGR valve is opened by t he ECM "quad-driver" (QDR), grounding
each solenoid circuit individually. The fl ow of EGR is regulated by the ECM
which uses information from the Coolant Temperature Sensor (CTS), Throttle
Position Sensor (TPS) and the Manifold Absolute Pressure (MAP) sensor to
determine the appropriate rate of flow for a particular engine operating
condition.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 559

Fig. 14: Discard the old gasket. Be sure the remove all carbon deposits from the
ports on the EGR valve and the mounting surface
THERMOSTATIC AIR CLEANER (THERMAC)
OPERATION
This system is designed to warm the air entering the carburetor when
underhood temperatures are low, and to ma intain a controlled air temperature
into the carburetor or throttle body at all times. By allowing preheated air to
enter, the amount of time t he choke is on is reduced, resulting in better fuel
economy and lower emissions. Engine warm-up time is also reduced.
The THERMAC system is composed of th e air cleaner body, a filter, sensor
unit, vacuum diaphragm, damper door, a ssociated hoses and connections. Heat
radiating from the exhaust manifold is tr apped by a heat stove and is ducted to
the air cleaner to supply heated air to t he carburetor or throttle body. A movable
door in the air cleaner case snorkel allows air to be drawn in from the heat stove
(cold operation). The door position is co ntrolled by the vacuum motor, which
receives intake manifold vacuum as modulated by the temperature sensor.
A vacuum door which remain s open can cause carburetor icing or poor cold
driveability. A door which remains clos ed during normal engine operating
temperatures can cause sluggishne ss, engine knocking and overheating.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 561
3. Apply at least 7 in. Hg of vacuum
to the damper diaphragm unit. The
door should close. If it doesn't, che ck the diaphragm linkage for binding
and correct hookup.
4. With the vacuum still applied and t he door closed, clamp the tube to trap
the vacuum. If the door doesn't remain closed, there is a leak in the
diaphragm assembly.
REMOVAL & INSTALLATION
VACUUM MOTOR 1. Remove the air cleaner.
2. Disconnect the vacuum hose from the motor.
3. Drill out the spot welds with a
1/8 inch (3mm) bit, then enlarge as
necessary to remove the retaining strap.
4. Remove the retaining strap.
5. Lift up the motor and cock it to o ne side to unhook the motor linkage at
the control damper assembly.
To install: 6. In order to install t he new vacuum motor, drill a
7/64 inch (2.8mm) hole in
the snorkel tube as the c enter of the vacuum motor retaining strap.
7. Insert the vacuum motor linkage into the control damper assembly.
8. Use the motor retaining strap and a sheet metal screw to secure the
retaining strap and motor to the snorkel tube.
Make sure the screw does not interf ere with the operation of the damper
assembly. Shorten the screw if necessary.
TEMPERATURE SENSOR 1. Remove the air cleaner.
2. Disconnect the hoses at the air cleaner.
3. Pry up the tabs on the sensor reta ining clip and remove the clip and
sensor from the air cleaner.
To install: 4. Position sensor into air cleaner.
5. Install retaining clip.
6. Connect the hoses to the air cleaner.
7. Install the air cleaner.
AIR INJECTION REACTION (AIR) SYSTEM
OPERATION
The AIR management system is used to prov ide additional oxygen to continue
the combustion process after the exhaus t gases leave the combustion chamber.