GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 486
VALVE SEATS
A visual inspection of the valve seats
should show a slightly worn and pitted
surface where the valve face contacts t he seat. Inspect the seat carefully for
severe pitting or cracks. Also, a seat t hat is badly worn will be recessed into the
cylinder head. A severely worn or rece ssed seat may need to be replaced. All
cracked seats must be replaced. A seat co ncentricity gauge, if available, should
be used to check the seat run-out. If run-out exceeds specifications the seat
must be machined (if no specification is given use 0.002 in. or 0.051mm).
CYLINDER HEAD SURFACE FLATNESS
After you have cleaned the gasket surf ace of the cylinder head of any old
gasket material, check the head for flatness.
Fig. 12: Check the head for flatness across the center of the head surface using
a straightedge and feeler gauge
GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 496
ENGINE BLOCK
ENGINE BLOCK BEARING ALIGNMENT
Remove the main bearing caps and, if sti
ll installed, the main bearing inserts.
Inspect all of the main bearing saddles and caps for damage, burrs or high
spots. If damage is found, and it is caused from a spun main bearing, the block
will need to be align-bored or, if severe enough, replacement. Any burrs or high
spots should be carefully removed with a metal file.
Place a straightedge on the bearing saddles, in the engine block, along the
centerline of the crankshaft. If any cl earance exists between the straightedge
and the saddles, the block must be align-bored.
Align-boring consists of machining th e main bearing saddles and caps by
means of a flycutter that runs through the bearing saddles.
DECK FLATNESS
The top of the engine blo ck where the cylinder head m ounts is called the deck.
Insure that the deck surface is clean of dirt, carbon deposits and old gasket
material. Place a straightedge across the surface of the deck along its
centerline and, using feeler gauges, check the clearance along several points.
Repeat the checking procedure with th e straightedge placed along both
diagonals of the deck surface. If the reading exceeds 0.003 in. (0.076mm)
within a 6.0 in. (15.2cm) span, or 0.006 in . (0.152mm) over the total length of
the deck, it must be machined.
CYLINDER BORES
The cylinder bores house the pistons and are slightly larger than the pistons
themselves. A common piston-to-bor e clearance is 0.0015-0.0025 in.
(0.0381mm-0.0635mm). Inspect and measur e the cylinder bores. The bore
should be checked for out-of-roundness, t aper and size. The results of this
inspection will determine w hether the cylinder can be us ed in its existing size
and condition, or a rebore to the next oversize is required (or in the case of
removable sleeves, have replacements installed).
GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 751
13. Lubricate a new outlet tube 0-ring and in
stall it on the end of the tube.
14. Connect the regulator base to the fuel outlet tube, then to the fuel rail.
15. Finger-tighten the base-to-rail screw.
16. Install the pressure regulator br acket. Finger-tighten the screws only.
17. Lubricate a new rear crossover tube O-ring and install it on the end of the
tube.
18. Install the rear crossover tube to the regulator base.
19. Install the crossover tube reta iner and finger-tighten the screw.
20. Tighten all attaching screws to 44 inch lbs. (5 Nm).
21. Install the fuel rail assembly.
22. Temporarily connect the negative battery cable. a. With the engine OFF and the igniti on ON, check for fuel leaks.
b. Disconnect the negative battery cable.
23. Install the intake plenum and runners.
24. Connect the negative battery cable.
IDLE AIR CONTROL VALVE
REMOVAL & INSTALLATION 1. Unplug the electrical connector from idle air control valve.
2. Remove the idle air control valve.
To install: 3. Before installing the idle air contro l valve, measure the distance that the
valve is extended. Measurement s hould be made from the motor housing
to the end of the cone. It should not exceed 28.5mm (1
1/8 in.), or damage
to the valve may occur when installed.
4. On 1985-1992 models, identify the replacement IAC valve as being
either Type 1 (with collar at electric terminal end) or Type 2 (without
collar). If measuring distance is great er than specified above, proceed as
follows:
• Type 1: Use finger pressure to slowly retract the pintle.
• Type 2: Compress retaining spring from valve while turning valve
in with a clockwise motion. Return spring to original position with
straight portion of spring end aligned with flat surface of valve.
On IAC valves that have already been in service, do not push or pull on the
valve pintle. The force required to move the pintle may damage the threads on
the worm drive.
5. Use a new gasket or O-ring and install the IAC valve into the throttle body.
6. Allow the ECM to reset the idle air control valve using the procedure
described earlier in this section.
GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 812
9. Connect one end of the other jumper
cable to the negative (-) terminal on
the booster battery and the final cable clamp to an engine bolt head,
alternator bracket or ot her solid, metallic point on the engine with the
dead battery. Try to pick a ground on the engine that is positioned away
from the battery in order to minimi ze the possibility of the 2 clamps
touching should one l oosen during the procedure. DO NOT connect this
clamp to the negative (-) term inal of the bad battery.
CAUTION - Be very careful to keep the jum per cables away from moving parts
(cooling fan, belts, etc.) on both engines.
10. Check to make sure that the c ables are routed away from any moving
parts, then start the d onor vehicle's engine. Run the engine at moderate
speed for several minutes to allow the dead battery a chance to receive
some initial charge.
11. With the donor vehicle's engine still r unning slightly above idle, try to start
the vehicle with the dead battery. Crank the engine for no more than 10 \
seconds at a time and let the starter cool for at least 20 seconds between
tries. If the vehicl e does not start in 3 tries, it is likely that something else
is also wrong or that the battery needs additional time to charge.
12. Once the vehicle is star ted, allow it to run at idle for a few seconds to
make sure that it is operating properly.
13. Turn ON the headlight s, heater blower and, if equipped, the rear
defroster of both vehicles in order to reduce the severity of voltage spikes
and subsequent risk of dam age to the vehicles' electrical systems when
the cables are disconnected. This st ep is especially important to any
vehicle equipped with computer control modules.
14. Carefully disconnect the cables in the reverse order of connection. Star\
t with the negative cable that is attached to the engine ground, then the
negative cable on the donor battery. Di sconnect the positive cable from
the donor battery and finally, disconnect the positive cable from the
formerly dead battery. Be careful when disconnecting the cables from the
positive terminals not to allow the alli gator clips to touch any metal on
either vehicle or a short and sparks will occur.
JACKING
Your vehicle was supplied with a jack for emergency road repairs. This jack is
fine for changing a flat tire or other s hort term procedures not requiring you to
go beneath the vehicle. If it is used in an emergency situation, carefully follow
the instructions provided eit her with the jack or in your owner's manual. Do not
attempt to use the jack on any portions of the vehicle other than specified by the
vehicle manufacturer. Always block the diagonally opposite wheel when using a
jack.
A more convenient way of jacking is the use of a garage or floor jack. You may
use the floor jack to raise the vehicle in the areas shown in the illustration .
GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 847
DISARMING
1. Turn the steering wheel to align the w heels in the straight-ahead position.
2. Turn the ignition switch to the LOCK position.
3. Remove the SIR air bag fuse from the fuse block.
4. Remove the left side trim panel and disconnect the yellow 2-way SIR
harness wire connector at the bas e of the steering column.
To enable system: 5. Turn the ignition switch to the LOCK position.
6. Reconnect the yello w 2-way connector at the base of the steering
column.
7. Reinstall the SIR fuse and the left side trim panel.
8. Turn the ignition switch to the RUN position.
9. Verify the SIR indicator light flashes 7-9 times, if not as specified, inspect
system for malfunction or c ontact the manufacturer.
For more details on the SIR system - including disarming instructions for
passenger bags - please refer to Chassis Electrical in this repair guide.
SUPPLEMENTAL INFLATABLE REST RAINT (SIR) COIL ASSEMBLY
After performing repairs on the inter nals of the steering column the coil
assembly must be centered in order to avoid damaging the coil or accidental
deployment of the air bag. There are 2 different styles of coils, one rotates
clockwise and the other rotates counterclockwise.
ADJUSTMENT (CENTERING THE COIL) 1. With the system properly disarmed, hold the coil assembly with the clear
bottom up to see the coil ribbon.
2. While holding the coil assembly, depr ess the lock spring and rotate the
hub in the direction of the arrow until it stops. The coil should now be
wound up snug against the center hub.
3. Rotate the coil assembly in the opposite direction approximately 2
1/2
turns and release the lock spring between the locking tabs in front of the
arrow.
4. Install the coil assembly onto the steering shaft.
STEERING WHEEL
WARNING - Before attempting any repairs involving the steering wheel or
disassembly of it, ensure that the Supple mental Inflatable Restraint (Air Bag)
system is properly disarmed.
REMOVAL & INSTALLATION
If the vehicle is equipped with a SIR (A ir Bag) system, ensure that the proper
disarming procedure is followed.
GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 849
2. Loosen the screws and lo
cknuts from the back of the steering wheel
using a suitable Torx® driver or equi valent, until the inflator module can
be released from the steering wheel. Remove the inflator module from
the steering wheel.
CAUTION - When carrying a live inflator modul e, ensure the bag and trim cover
are pointed away from the body. In ca se of an accidental deployment, the bag
will then deploy with minima l chance of injury. When placing a live inflator
module on a bench or other surface, a lways place the bag and trim cover up,
away from the surface. This is necessa ry so a free space is provided to allow
the air bag to expand in the unlikely event of accidental deployment. Otherwise,
personal injury may result. Also, never carry the inflator module by the wires or
connector on the underside of the module.
4. Disconnect the coil assembly connec tor and CPA clip from the inflator
module terminal.
5. Remove the steering wheel locking nut.
6. Using a suitable pulle r, remove the steering wheel and disconnect the
horn contact. When attaching the steer ing wheel puller, use care to
prevent threading the side screws into the coil assembly and damaging
the coil assembly.
To install: 7. Route the coil assembly connec tor through the steering wheel.
8. Connect the horn contact and install the steering wheel. When installing
the steering wheel, ali gn the block tooth on the steering wheel with the
block tooth on the steering shaft within 1 female serration.
9. Install the steering wheel locking nu t. Tighten the nut to 31 ft. lbs. (42
Nm).
10. Connect the coil assembly connector and CPA clip to the inflator module
terminal.
11. Install the inflator module. Ensu re the wiring is not exposed or trapped
between the inflator modul e and the steering wheel. Tighten the inflator
module screws to 25 inch lbs. (2.8 Nm).
12. Connect the negative battery cable.
13. Enable the SIR system as follows: a. Connect the yellow 2-way SIR harness connector to base of the steering column and CPA.
b. Install the left sound insulator.
c. Install the SIR fuse in the fuse block.
d. Turn the ignition switch to the RUN position and verify that the
inflatable restraint indicator fl ashes 7-9 times and then turns OFF.
If the indicator does not respond as stated, a problem within the
SIR system is indicated.
GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 856
1. Properly disable the SIR
air bag system, if equipped.
2. Place the lock in the Run position.
3. Remove the lock plate, turn signal switch and buzzer switch.
4. Remove the screw and lock cylinder.
CAUTION - If the screw is dropped on removal, it could fall into the column,
requiring complete disassembly to retrieve the screw.
To install:
5. Rotate the cylinder clockwise to a lign cylinder key with the keyway in the
housing.
6. Push the lock all the way in.
7. Install the screw. Tighten the screw to 14 inch lbs. (1.5 Nm) for
adjustable columns and 25 inch lbs. (2.8 Nm) for standard columns. Re-
center the SIR coil assembly as previously directed.
STEERING COLUMN
WARNING - Before attempting any repairs involving the steering wheel or
disassembly of it, ensure that the Supple mental Inflatable Restraint (Air Bag)
system is properly disarmed.
REMOVAL & INSTALLATION
The front of the dash mount ing plates must be loosened whenever the steering
column is to be lowered from the instrument panel.
1. Disconnect the negative battery cable.
2. On 1990-92 vehicles, disable the S upplemental Inflatable Restraint (SIR)
system as follows: a. Turn the steering wheel so th e vehicle's wheels are pointing
straight-ahead.
The wheels of the vehicle must be in the straight-ahead position
and the steering column in the locked position before proceeding
with steering column remo val. Failure to follow this procedure will
cause the SIR coil to become uncentered, resulting in damage to
the coil assembly.
b. Remove the SIR fuse from the fuse block.
c. Remove the left sound insulator by removing the nut from the stud
and gently prying the insulator from the knee bolster.
d. Disconnect the Connector Position Assurance (CPA) and yellow 2-way SIR harness connector at the base of the steering column.
3. Remove the nut and bolt from t he upper intermediate shaft coupling.
Separate the coupling from the lo wer end of the steering column.
4. Remove the steering w heel, if the column is to be replaced or repaired
on the bench.
5. Remove the knee bolster and bracket, if equipped.
GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 857
6. Remove the bolts attaching the toe plate to the cowl.
7. Disconnect the electrical connectors.
8. Remove the capsule nuts attachi
ng the steering column support bracket
to the instrument panel.
9. Disconnect the park lock cable from the ignition switch inhibitor, if
equipped with automatic transmission.
10. Remove the steering column from the vehicle.
To install:
If a replacement steering column is bein g installed, do not remove the anti-
rotation pin until after the steering co lumn has been connected to the steering
gear. Removing the anti-rotation pin before the steering column is connected to
the steering gear may dam age the SIR coil assembly.
11. Position the steering column in the vehicle.
12. Connect the park lock cable to the ig nition switch inhibitor on vehicles
with automatic transmission.
13. Install the capsule nuts attaching the steering column support bracket to
the instrument panel and tighten to 20 ft. lbs. (27 Nm).
14. Install the nut and bolt to the upper intermediate shaft coupling attaching
the upper intermediate shaft to the steer ing column. Tighten the nut to 44
ft. lbs. (60 Nm).
15. Install the bolts attaching the toe pl ate to the cowl and tighten to 58 inch
lbs. (6.5 Nm).
16. Connect the electrical connectors.
17. Remove the anti-rotation pin if a se rvice replacement steering column is
being installed.
18. Install the knee bolster and bracket, if equipped.
19. Install the sound insulator panel.
If SIR coil has become uncentered by turni ng of the steering wheel without the
column connected to the st eering gear, follow the proper adjustment procedure
for the SIR coil assembly before proceeding.
20. Install the steering wheel.
21. Connect the negative battery cable.
22. Enable the SIR system as follows: a. Connect the yellow 2-way SIR harness connector to the base of
the steering column and CPA clip and install the SIR fuse.
b. Install the left sound insulator.
c. Turn the ignition switch to the RUN position and verify that the
inflatable restraint indicator fl ashes 7-9 times and then turns OFF.
If the indicator does not respond as stated, a problem within the
SIR system is indicated.