GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 142
When current flows through
a load, the voltage beyond the load drops. This
voltage drop is due to the resistance created by the load and also by small
resistances created by corrosion at the connectors and damaged insulation on
the wires. The maximum allo wable voltage drop under load is critical, especially
if there is more than one load in t he circuit, since all voltage drops are
cumulative.
1. Set the voltmeter selector s witch to the 20 volt position.
2. Connect the multimeter negative lead to a good ground.
3. Operate the circuit a nd check the voltage prior to the first component
(load).
4. There should be little or no voltage drop in the circuit prior to the fi\
rst component. If a voltage drop exists, the wire or connectors in the circuit
are suspect.
5. While operating the first component in the circuit, probe the ground side
of the component with the positive meter lead and observe the voltage
readings. A small voltage drop should be noticed. This voltage drop is
caused by the resistance of the component.
6. Repeat the test for each component (load) down the circuit.
7. If a large voltage drop is noticed, the preceding component, wire or
connector is suspect.
RESISTANCE
Fig. 3: Checking the resistance of a coolant temperature sensor with an
ohmmeter. Reading is 1.04 kilohms
GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 154
HEATER CORE
REMOVAL & INSTALLATION
CAUTION - When draining the coolant, keep in mind that cats and dogs are
attracted by the ethylene gl ycol antifreeze, and are quite likely to drink any that
is left in an uncovered container or in puddles on the ground. This will prove
fatal in sufficient quantity. Always drai n the coolant into a sealable container.
Coolant should be reused unless it is contaminated or several years old.
1. Drain the cooling system.
2. Remove both heater hoses.
3. Remove the lower right hush panel.
4. Remove the lower right instru ment panel and the ESC module if
necessary.
5. Remove the lower right in strument panel-to-cowl screw.
6. Remove the heater case screws.
The upper left screw may be reached with a long socket extension. Carefully lift
the lower right corner of the instrument panel to align the extension.
7. Remove the case cover.
8. Remove the support plate and baffle screws.
9. Remove the heater core and ba ffle plate from the housing.
To install: 10. Position the heater core and baffle plate into the housing.
11. Install the support plate and baffle screws.
12. Install the case cover.
13. Install the heater case screws.
14. Install the lower right in strument panel-to-cowl screw.
15. Install the lower right instrument panel and the ESC module if necessary.
16. Install the lower right hush panel.
17. Install both heater hoses.
18. Fill the cooling system and check for leaks.
Fig. 1: Heater module assembly
GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 158
HOT WATER VALVE
REMOVAL & INSTALLATION
Not all model years and engine applic
ations use hot water valves.
1. Drain the coolant.
2. Disconnect the vacuum hose at the hot water valve by sliding the tab of
the connector past the L-shaped bend in the ac tuator vacuum tube.
Then, slide the hose connector off the tube while continuing to hold the
tab back against the connector end.
3. Disconnect the heater hos es from the valve.
To install: 4. Install the valve with the vacuum actuator faci ng up. The heater hoses
will hold the valve in position.
5. Install the vacuum hose to the actuator.
6. Refill the cooling system. R un the engine long enough to purge any
trapped air, then add more coolant if necessary.
7. Check for leaks.
Fig. 1: Hot water valve loca tion on carbureted V8 engines
GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 365
31. Connect the bulkhead harness connec
tor, wires and hoses. Reroute the
ECM harness in its original location. Install the hush panel and fenderwell
splash panel.
32. Install the radiator, fan and fan sh roud. Connect the radiator and heater
hoses, along with the transmission cooler lines.
33. Connect the vacuum brake booster li ne, the throttle linkage and cruise
control cable. Install the distributor cap.
34. Fill the cooling system with the proper type and amount of coolant and
the crankcase with the proper type of oil to the correct level.
35. Install the water pump drive bel t, the air cleaner duct and the hood.
36. Connect the negative battery cable, st art the engine and check for leaks.
2.8L AND 3.1L ENGINES
Fig. 2: Engine mountin g points for the V6
1. Disconnect the negative battery cable.
2. Remove the air cleaner duct.
3. Mark the hood location on the hood supports and remove the hood.
4. Remove the water pump drive belt.
5. Drain the radiator and remove t he radiator hoses. Disconnect the heater
hoses and the transmission cooler lines.
6. Remove the fan shroud, fan and radiator.
7. Disconnect the throttle linkage, includi ng the cruise control detent cable.
GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 366
8. Remove the air conditioning co
mpressor and lay aside. Remove the
power steering pump and lay aside.
Do not disconnect the air conditioning or power steering lines.
9. Remove the vacuum brake booster line.
10. Remove the distributor cap and spark plug wires.
11. Disconnect the necessary elec trical connections and hoses.
12. Raise and safely support the vehicle.
13. Disconnect the exhaust pipes at the exhaust manifolds.
14. Remove the flywheel cover and remove the converter bolts.
15. Disconnect the star ter wire connections.
16. Remove the bellhousing and t he motor mount through-bolts.
17. Lower the vehicle.
18. Relieve the fuel system pressu re. Disconnect the fuel lines.
19. Support the transmission with a suit able jack. Attach an engine lifting
device.
20. Remove the engine assembly.
To install: 21. Position the engine assembly in the vehicle.
22. Attach the motor mount to engine br ackets and lower the engine in place.
Remove the engine lifting device and the transmission jack.
23. Raise and support the vehicle safely.
24. Install the motor mount through-bolts and tighten the nuts to 50 ft. lbs. (68 Nm). Install the bellhousing bolts and tighten to 35 ft. lbs. (47 Nm).
25. On vehicles with automatic transmissi on, install the converter to flywheel
attaching bolts to 46 ft. lbs. (63 Nm).
26. Install the flywheel splash shield and tighten to 89 inch lbs. (10 Nm).
27. Connect the starter wires and the fuel lines.
28. Install the exhaust pipe on the exhaust manifold.
29. Lower the vehicle.
30. Install the power steering pump and the air conditioning compressor.
31. Connect the necessary wires and hoses.
32. Install the radiator, fan and fan sh roud. Connect the radiator and heater
hoses and the transmission cooler lines.
33. Connect the vacuum brake booster li ne, the throttle linkage and cruise
control cable. Install the distributor cap.
34. Fill the cooling system with the proper type and amount of coolant and
the crankcase with the proper type of oil to the correct level.
35. Install the water pump drive bel t, the air cleaner duct and the hood.
36. Connect the negative battery cable, st art the engine and check for leaks.
GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 368
23. Remove the AIR/converter bracket
and ground wires from the rear of the
cylinder head.
24. Attach a suitable lifting devic e and remove the engine assembly.
To install: 25. Position the engine assembly in the vehicle.
26. Attach the motor mount to engine brackets and lower the engine into
place.
27. Remove the engine lifting device and the transmission jack.
28. Raise and safely support the vehicle.
29. Install the motor mount through-bolts and tighten to 50 ft. lbs. (68 (Nm).
30. Install the bellhousing bolts and tighten to 35 ft. lbs. (47 Nm).
31. On vehicles with automatic transmissi on, install the converter to flywheel
bolts. Tighten the bolts to 46 ft. lbs. ( 63 Nm). Install the flywheel cover.
32. Connect the starter wires and the fuel lines.
33. Connect the exhaust pipe at the exhaust manifold.
34. Lower the vehicle.
35. Connect the necessary wires and hoses.
36. Install the power steering pump and air conditioning compressor in their
respective brackets.
37. Install the radiator, fan and fan sh roud, radiator hoses and heater hoses.
38. Connect the transmission cooler lines and cooling fan electrical
connectors.
39. Install the distributor.
40. Install the plenum ex tension, if equipped.
41. Fill the cooling system with the proper type and quantity of coolant and
the crankcase with the proper type of oil to the correct level.
42. Install the air cleaner and the hood.
43. Connect the negative battery cable, start the engine, check for leaks and
check timing.
GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 379
THERMOSTAT
REMOVAL & INSTALLATION
CAUTION
- When draining the coolant, keep in mind that cats and dogs are
attracted by the ethylene gl ycol antifreeze, and are quite likely to drink any that
is left in an uncovered container or in puddles on the ground. This will prove
fatal in sufficient quantity. Always drai n the coolant into a sealable container.
Coolant should be reused unless it is contaminated or several years old.
Fig. 1: Removing the thermostat housing bolts
GM – CAMARO 1982-1992 – Repair Guide (Checked by WxMax) 381
It is not necessary to remove the radi
ator hose from the thermostat housing.
4. Remove the two retaining bolts from the thermostat housing and remove
the thermostat.
To install: 5. Using a new gasket, install the thermostat and housing.
6. Tighten the bolts to 21 ft lbs. (28 Nm).
7. Fill and bleed t he cooling system.
INTAKE MANIFOLD
REMOVAL & INSTALLATION
When servicing all vehicles, be absolutel y sure to mark vacuum hoses and
wiring so that these items may be properly reconnected during installation. Also,
when disconnecting fitting lines (fuel lines, power brake vacuum lines,
transmission and engine cooler lines, etc.), always use two flare nut (or line)
wrenches. Hold the wrench on the large fitti ng with pressure on the wrench as if
you were tightening the fitting (clockw ise), THEN loosen and disconnect the
smaller fitting from the larger fitting. If this is not done, damage to the line will
result. Always relieve fuel system pressure before disconnecting lines.
CAUTION - When draining the coolant, keep in mind that cats and dogs are
attracted by the ethylene gl ycol antifreeze, and are quite likely to drink any that
is left in an uncovered container or in puddles on the ground. This will prove
fatal in sufficient quantity. Always drai n the coolant into a sealable container.
Coolant should be reused unless it is contaminated or several years old.
2.5L ENGINE
Fig. 1: Intake manifold bol t torque sequence for 2.5L engine
1. Disconnect the negative batte ry cable at the battery.
2. Remove the air cleaner assembly.
3. Remove the PCV valve and hose.
4. Drain the cooling system.
5. Disconnect the fuel lines from the Throttle Body Injection (TBI) unit.
6. Mark and disconnect the vacuum li nes and the electrical connections
from the TBI unit.
7. Disconnect the linkage from the TBI unit (throttle, downshift, and/or
cruise control, as applicable).
8. Disconnect the coolant inlet and outlet hoses from the intake manifold.
9. Remove the air conditioning co mpressor support brackets and the
compressor. DO NOT disconnect the refrigerant lines from the
compressor. Lay the compressor aside.
10. Remove the manifold attachi ng bolts and remove the manifold.
To install: