1982 CHEVROLET CAMARO display

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 199
Federal law requires that the
odometer in any replacement
speedometer/odometer must r egister the same mileage as that registered on
the removed speedometer/odometer. Service replacement
speedometer/odometers and odometer modul es with the mileage preset to
actual vehicle mileage are available through the dealer. In nearly all cases, the
mileage continues to accumu late in the odometer memory even if the odometer
does not display mileage. Th is mileage can usually be verified by the dealer.
Contact the dealer for instructi ons to receive a replacement
speedometer/odometer with pres et mileage. If the actual vehicle mileage cannot
be verified, the dealer will supply a spe edometer/odometer with a display set to
zero miles. In addition, an odometer mileage sticker is supplied with the
replacement odometer. The sticker must display the estimated vehicle mileage
and is to be affixed to the driver's door.
REMOVAL & INSTALLATION 1. The gauges can be removed from the cluster assembly by: a. Removing the cluster lens.
b. Removing the printed circuit board from the back of the cluster.
c. Removing the gauge attaching screws.
2. Installation is the reverse of removal.
SPEEDOMETER CABLE
REMOVAL & INSTALLATION 1. Disconnect the negative batte ry cable at the battery.
2. On models without cruise control, disconnect the speedometer cable
strap at the power brake booster. On models with cruise control,
disconnect the speedometer cable at the cruise control transducer.
3. Remove the instrument cluster trim plate.
4. Remove the instrument cluster a ttaching screws and pull the cluster out
far enough to gain access to the r ear of the speedometer head.
5. Reach beneath the c able connection at the speedometer head, push in
on the cable retaining spring, and disconnect the cable from the
speedometer.
6. Slide the old cable ou t of the speedometer cable casing. If the cable is
broken, remove the cable from both ends of the casing. Using a short
piece of the old cable to fit t he speedometer connection, turn the
speedometer to increase the speed i ndicated on the dial and check for
any binding during rotation. If binding is noted, the speedometer must be
removed for repair or replacement. Check the entire cable casing for
extreme bends, chafing, breaks, et c., and replace if necessary.
To install: 7. Wipe the cable clean us ing a lint free cloth.
8. If the old casing is to be reused, flush the casing with petroleum spirits
and blow dry with compressed air.

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 575

Fig. 2: Electronic Control Module (ECM)
LEARNING ABILITY
The ECM can compensate for minor variations within the fuel system through
the block learn and fuel in tegrator systems. The fuel integrator monitors the
oxygen sensor output voltage, adding or subtracting fuel to drive the mixture
rich or lean as needed to reach the ideal air fuel ratio of 14.7:1. The integrator
values may be read with a scan tool; the display will range from 0-255 and
should center on 128 if the oxygen sens or is indicating a 14.7:1 mixture.

Fig. 3: Among other features, a scan tool combines many standard testers into
a single device for quick and accurate diagnosis

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 721
8. The idle speed should be 450-500 rpm, adjust as necessary.
WARNING - Correct minimum idle speed adj ustment is critical to vehicle
performance and component durability. Incorrect minimum idle speed
adjustment (too high) will caus e the IAC valve pintle to constantly bottom in it's
seat and result in early valve failure. If minimum idle speed is adjusted too low,
the vehicle may not start in cold weather or may stall during warm-up.
Turn the ignition OFF and reconnect the IAC motor connector.
9. Reconnect the distributor set-timing connector.
10. Use silicone sealant to co ver the throttle stop screw.
THROTTLE POSITION SENSOR (TPS)
1982-1983 2.5L TBI engines ar e equipped with an adjustable throttle position
sensor. This procedure should only be performed after replacing the TPS or
diagnosis leads to incorrect TPS adjustment.
1. Remove the throttle position sensor connector and install three jumper wires between the connector and the s ensor. Connect a digital voltmeter
to terminals B and C.
2. Turn the ignition ON. It should display bet ween 0.45-0.60 volts.
3. Adjust the TPS, if necessary, by loosening the attaching screws and
rotating the TPS.
4. Tighten the screws, remove the jumper wires with the ignition OFF and
reconnect the harness connector.
5. Start the engine and check fo r proper idle operation.

Fig. 7: TPS adjustment

GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 733
THROTTLE POSITION SENSOR (TPS)
An accurate digital voltmeter is
needed to perform this adjustment.
1. Remove the air cleaner.
2. Disconnect the TPS electrical connector.
3. Install three jumper wires betwe en the TPS and the TPS wiring terminal
connections.
4. Turn the ignition ON, engine stopped, measure the voltage between
terminals B and C.
5. The display should read between 0.45-0.60 volts.
6. Loosen the screws and rotate the TPS to obtain the correct voltage, if necessary.
7. Tighten the TPS screws and turn the i gnition OFF. Remove the jumpers.
8. Reconnect the wir ing to the TPS.
9. Install the air cleaner.

Fig. 5: TPS adjustment
FUEL PRESSURE REGULATOR
REMOVAL & INSTALLATION
The removal and installation procedures fo r the Crossfire injection system's fuel
pressure regulator is identical to t he Throttle Body Injection (TBI) system.
Please refer to the TBI fuel pressure r egulator procedures earlier in this repair
guide.
THROTTLE POSITION SENSOR (TPS)
REMOVAL & INSTALLATION
1. Remove the air cleaner.
2. Disconnect the electrical connector.
3. Remove the TPS attaching screws and lockwashers.
4. Remove the TPS.
To install: