1982 CHEVROLET CAMARO Repair Guide

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 697
9. Check, and if necessary, adjust fast
idle speed, as described on the
Vehicle Emission Control Information (VECI) label.

Fig. 29: Mixture needle and spring
IDLE LOAD COMPENSATOR
The idle load compensator is adjusted at the factory. Do not make any
adjustments unless diagnosis leads to i t, or curb idle speed is not to
specification.
1. Make certain ignition timing, mi xture adjustment, vacuum hoses, fuel
pressure and CCC system meets specifications.
2. Remove air cleaner and plug hose to thermal vacuum valve.
3. Connect a tachometer.
4. Disconnect and plug hose to EGR valve.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 698
5. Disconnect and plug hose to canister purge port.
6. Disconnect and plug hose to idle load compensator.
7. Back out idle stop screw
on carburetor 3 turns.
8. Turn air conditioning OFF.
9. Block drive wheels, set parki ng brake, place transmission in P, start and
warm engine to normal operating temperature. Make certain choke is
OPEN .
10. With engine RUNNING place transmission in D and idle load
compensator fully extended (no vacuum applied). Using tool J-29607, or
equivalent, adjust plunger to obtain 650-750 rpm. Locknut on plunger
must be held with a wrench to prevent damage to guide tabs.
11. Measure distance from the locknut to tip of the plunger. This distance
must not exceed 1 in. (25mm). If it does check for low idle condition.
12. Reconnect vacuum hose to idle load compensator and observe idle
speed.
13. Idle speed should be between 425-475 rpm in D.
14. If idle speed is correct no further adjustment is necessary, proceed to the
next step. If idle speed is still incorrect continue as follows:
It may be necessary to remove the idle load compensator from the engine
unless a hex key wrench is m odified to clear obstructions.
a. Stop engine, remove rubber cap from the center outlet tube.
b. Using a 0.90 in. (23mm) hex wrench, insert through open center tube to
engage idle speed adjusting screw.
c. If idle speed was low, turn t he adjusting screw counterclockwise
approximately 1 turn for every 85 rpm low. If idle speed was high turn
screw 1 turn for every 85 rpm high.
15. Disconnect and plug vacuum hose to the idle load compensator.
16. Using a hand pump, apply vacuum to the idle load compensator until fully
retracted.
17. Adjust the idle stop screw on carburetor float bowl to obtain 450 rpm in
D .
18. Place transmission in P and stop engine.
19. Reconnect the idle load compensator.
20. Reconnect all vacuum hoses.
21. Install air cleaner and gasket. Remove wheel blocks.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 699

Fig. 30: Idle load compensator components
THROTTLE POSITION SENSOR (TPS)
Before the throttle position sensor voltage output setting can be accurately
checked or adjusted the idle rpm mu st be within specifications. The plug
covering the TPS adjustment screw is used to provide a tamper-resistant design
and retain the factory setting during vehicl e operation. Do not remove the plug
unless diagnosis indicates t he TPS is not adjusted correct ly, or it is necessary
to replace the air horn assembly, float bowl, TPS, or TPS adjustment screw.
This is a critical adjustment that must be performed accurately to ensure proper
vehicle performance and contro l of exhaust emissions. Remove TPS plug if not
already removed.
Adjustment is required only if voltage is above the following readings, as the
ECM automatically zeros below 0.70 Volts.
1. Using a
5/64 in. (2mm) drill bit, carefully drill a hole in the steel or
aluminum plug. Be sure to drill only far enough to start a self tapping
screw, the approximat e drilling depth is
1/16-1/8 in. (1.6-3mm).
Use care in drilling so as not to damage the TPS adjustment screw head.
2. Start a long self tapping screw (No. 8 x
1/2 in.) into the drilled pilot hole in
the plug. Turn the screw in only enough to ensure a good thread
engagement in the drilled hole.
3. Place a suitable tool between the screw head and the air horn casting.
Then pry against the screw head to remove the plug. A small slide
hammer may also be used in this proc edure. Be sure to discard the plug
when it has been removed.
4. Connect a suitable digital voltmete r (J-29125 or equivalent) from the TPS
connector center terminal (B) to the bottom terminal (C).
Jumper wires for access can be made using terminals 12014836 and 12014837
or equivalent. Make jumper wires up with 16 gauge (1.0mm), 18 gauge (0.8mm)
or 20 gauge (0.5mm) wire approximately 6 in. (152mm) long.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 700
5. With the ignition
ON and the engine stopp ed, install the TPS adjustment
screw and turn the screw with a suitable tool to obtain the specified
voltage at the specified throttle posit ion with the A/C controls in the OFF
position. a. 2.8L - 0.30 volts at curb idle position
b. 5.0L - 0.40 volts at curb idle position
6. After the adjustment has been made, install a new plug kit (supplied in
the service kits), into the air horn. Driv e the plug into place until it is flush
with the raised pump lever boss on t he casting. Clear trouble code
memory after adjustment.
The plug must be installed to retain the TPS adjustment screw setting. If a plug
kit is not available, remove the T PS adjusting screw and apply thread sealer
adhesive X-10 or equivalent to the scr ew threads. Now repeat the TPS
adjustment procedure to obtain the correct TPS voltage.

Fig. 31: Throttle position sensor adjus ting screw location on E2SE carburetors

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 701

Fig. 32: Throttle position sensor adjusting screw location on E4ME/E4MC
carburetors
REMOVAL & INSTALLATION
Always replace all internal gaskets that are removed. Flooding, stumble on
acceleration and other performance comp laints are in many instances, caused
by presence of dirt, water, or other foreign matter in carburetor. To aid in
diagnosis, carburetor should be carefully removed from engine without draining
fuel from bowl. Contents of fuel bowl may then be examined for contamination
as carburetor is disassembl ed. Check the fuel filter.
ROCHESTER E2SE 1. Remove air cleaner and gasket.
2. Disconnect fuel pipe and vacuum lines.
3. Disconnect electrical connectors.
4. Disconnect accelerator linkage.
5. If equipped with automatic transmi ssion, disconnect downshift cable.
6. If equipped with cruise c ontrol, disconnect linkage.
7. Remove carburetor attaching bolts.
8. Remove carburetor and EF E heater/insulator (if used).
9. Inspect EFE heater/insulator for damage. Be certain throttle body and
EFE heater/insulator surfaces are clean.
To install: 10. Install EFE heater/insulator.
11. Install carburetor and tighten nuts alternately to the correct torque.
12. Connect downshift cable, as required.
13. Attach the cruise cont rol cable, as required.
14. Connect accelerator linkage.
15. Connect electrical connections.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 702
16. Connect fuel pipe sand vacuum hoses.
17. Check base (slow) and fast idle.
18. Install the air cleaner.

Fig. 33: Remove the air cleaner for access to the carburetor

Fig. 34: Use a back-up wrench when disconnecting fuel lines

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 703

Fig. 35: If the retaining clip on the connec tor is broken off like this one, it should
be replaced

Fig. 36: The vacuum modulator line behind the carburetor must also be
disconnected, if equipped

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 704

Fig. 37: The accelerator cable retaini ng clip can be removed using a pair of
needle nose pliers

Fig. 38: The return spring and throttle valve cable must also be disconnected
from the linkage