1982 CHEVROLET CAMARO Repair Guide

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 553
If equipped with the 5.0L (VIN F) and 5.7L
(VIN 8) engines with Tuned Port
Injection (TPI), it will be necessary to remove the intake plenum to gain access
to the EGR valve.
3. Tag and disconnect the necessary hos es and wiring to gain access to
the EGR valve.
4. Remove the EGR valve retaining bolts.
5. Remove the EGR valve. Discard the gasket.
6. Buff the exhaust deposits from the mounting surface and around the
valve using a wire wheel.
7. Remove deposits from the valve outlet.
8. Clean the mounting surfaces of the intake manifold and valve assembly.
To install: 9. Install a new EGR gasket.
10. Install the EGR valve to the manifold.
11. Install the retaining bolts.
12. Connect the wiring and hoses.
13. Install the air cleaner assembly.
14. Connect the negative battery cable.

Fig. 7: EGR valve control solenoid on 2.8L engines

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 554

Fig. 8: EGR valve assembly on 2.8L engines

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 555

Fig. 9: EGR valve location on carburet ed and throttle body injected V8 engines

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 556

Fig. 10: EGR valve and solenoid a ssembly on Tuned Port Injection engines
3.1L ENGINE 1. Disconnect the negative battery cable.
2. Disconnect the electrical wiring at the solenoid.
3. Remove the 2 base-to-flange bolts.
4. Remove the digital EGR valve.
To install: 5. Install the gasket with "UP" readabl e after positioning on the adapter.
6. Install the digital EGR valve.
7. Install the 2 base-to-f lange bolts. Tighten the bolts to 11 ft. lbs (15 Nm)
first, then torque to 22 ft. lbs. (30 Nm).
8. Connect the negative battery cable.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 557

Fig. 11: Digital EGR valve assembly
EGR SOLENOID 1. Disconnect the negative battery cable.
2. Remove the air cl eaner, as required.
3. Disconnect the electrical wiring at the solenoid.
4. Disconnect the vacuum hoses.
5. Remove the retaining bolts and the solenoid.
6. Remove the filt er, as required.
To install: 7. If removed, install the filter.
8. Install the solenoid and retaining bolts.
9. Connect the vacuum hoses.
10. Connect the electrical wiring.
11. If removed, install the air cleaner.
12. Connect the negative battery cable.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 558

Fig. 12: Disconnect and label the EGR valve vacuum hose

Fig. 13: Removing the EGR valve from the engine

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) 560

Fig. 1: A common THERMAC air cleaner and components

Fig. 2: THERMAC vacuum motor modes of operation
SERVICE 1. Check the vacuum hoses for leaks, kinks, breaks, or improper connections and correct any defects.
2. With the engine off, check the pos ition of the damper door within the
snorkel. A mirror can be used to make this job easier. The damper door
should be open to admit outside air.