horn CHEVROLET CAMARO 1982 Repair Guide

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 694
IDLE MIXTURE
E2SE CARBURETORS
1. Remove the carburet or from the engine.
2. Remove the plugs coveri ng the idle mixture needles.
3. Turn the mixture needle in until slight ly seated, then back it out 4 turns.
4. If the plug in the air horn coveri ng the idle air bleed has been removed,
replace the air horn. If the plug is still in place, do not remove it.
5. Remove the vent stack screen a ssembly to gain access to the lean
mixture screw.
6. Using tool J-28696-10 or equivalent, turn the lean mixture screw in until
lightly seated, then back out 2
1/2 turns.
7. Install the carburetor on the engine.
8. Disconnect the bowl vent line at the carburetor.
9. Disconnect the EGR hos e and canister purge hose at the carburetor.
Cap the ports on t he carburetor.
10. Find the hose from port D of the carburetor to the temperature sensor
and secondary vacuum break thermal vacuum switch. Disconnect and
plug the vacuum hose going to the air cleaner.
11. Connect the positive lead of a dwell me ter to the mixture control solenoid
test lead (green connector). Connect the other lead to ground. Set the
meter to the 6 cylinder position.
12. Run the engine on the high step of the fast idle cam until the cooling fan
starts to cycle.
13. Run the engine at 3,0 00 rpm and adjust the lean mixture screw slowly.
Allow the reading to stabilize, obtain an average dwell of 35 degrees. It is
normal for the dwell to vary in a narrow range.
14. Return to idle.
15. Adjust the idle mixt ure screw to obtain an av erage dwell of 25 degrees.
Allow time for the reading to stabilize.
16. Run the engine at 3,000 rpm and not e the dwell reading. It should be
varying with an average reading of 35 degrees. If it does not, repeat the
earlier steps.

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) 710
•

Check the pump passages and the jet(s) for dirt, improper seating of the
discharge checkball or t he temperature bypass disc and/or scores in the
pumpwell. Check the condition of t he pump discharge check ball spring,
replace as necessary
• Check the pump linkage for excessiv e wear; repair or replace as
necessary
HARD STARTING-POOR COLD OPERATION
• Check the choke valve and linkage for excessive wear, binds or
distortion
• Test the vacuum break diaphragm(s) for leaks
• Clean or replace the fuel filter
• Inspect the float valve fo r sticking, dirt, etc.
• Also check the items under "Flooding"
POOR PERFORMANCE-POOR GAS MILEAGE
• Clean all fuel and vacuum passages in the castings
• Check the choke valve fo r freedom of movement
• Check the Mixture Control (M/C) soleno id for sticking, binding or leaking
• Check the air valve and secondary me tering rod for binding conditions. If
the air valve or metering rod is da maged or the metering rod adjustment
is changed from the factory setting, the air horn assembly must be
replaced. Also check the air valve le ver spring for proper installation
ROUGH IDLE
• Inspect the gasket and gasket mating su rfaces on the casting for nicks,
burrs or damage to the sealing beads
• Check the operation and sealing of the mixture control solenoid
• Clean all of the idle field passages
• If removed, inspect the idle mixture needle for ridges, burrs or being bent
• Check the throttle lever and valves for binds, nicks. or other damage
• Check all of the diaphragms for possible ruptures or leaks
After cleaning and checking all components, reassemble the carburetor, using
new parts and referring to the exploded view. When reassembling, make sure
that all screws and jets are tight in their seats, but do not overtighten as the tips
will be distorted. Tighten al l screws gradually, in rotation. Do not tighten needle
valves into their seats; uneven jetting will result. Always use new gaskets. Be
sure to follow all assembly and adjustment procedures.
Before performing any service on the carburet or, it is essential that it be placed
on a suitable holding fixtur e, such as tool J-9789-118, BY-30-15 or equivalent.
Without the use of the holding fixture, it is possible to damage throttle valves or
other parts of the carburetor.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 848
1982-89 VEHICLES

Fig. 1: Steering wheel removal
1. Disconnect the negative battery cable.
2. Remove the horn pad.
3. Disconnect the horn contact lead.
4. Remove the retainer and steering wheel nut.
5. Using a suitable steering wheel pu ller, remove the steering wheel.
6. Installation is the reverse of the removal procedure. Tighten the steering
wheel nut to 31 ft. lbs. (42 Nm).
1990-92 VEHICLES
CAUTION - The vehicle is equipped with a Supplemental Inflatable Restraint
(SIR) system, follow the recommended disarming procedures before performing
any work on or around the system. Failure to do so may result in possibl\
e
deployment of the air bag and/or personal injury.
Disconnect the negative battery cable.
1. Disable the Supplemental Inflatable Restraint (SIR) system as follows:
a. Turn the steering wheel so th e vehicle's wheels are pointing
straight-ahead.
b. Remove the left sound insulator by removing the nut from the stud
and gently prying the insulator from the knee bolster.
c. Disconnect the Connector Position Assurance (CPA) clip and yellow 2-way SIR harness connecto r at the base of the steering
column.
d. Remove the SIR fuse from the fuse block.

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.