1993 CHEVROLET DYNASTY sensor

Wiring Diagram
Name Sheet Number
Splice M1-3 ........................... .40, 55
Splice M2-1 ...............................39
Splice P33 ............................ .62, 64
Splice P34 ............................ .62, 64
Splice Q1 ................................58
Splice T13 ...............................24
Splice T16 ...............................25
Splice T41 ...............................23
Splice T41-1 ............................9,10
Splice X2 ................................42
Splice X2-1 ...............................42
Splice X13 ...............................66
Splice X15 ...............................66
Splice Z0 .................................3
Splice Z0-1 ...............................14
Splice Z0-2 ...............................21
Splice Z1 ......... .40, 44, 55, 57, 60, 61, 63, 68, 69, 71
Splice Z1-1 ...................... .38, 46, 47, 66
Splice Z1-2 ......................... .31, 33, 42
Splice Z1-3 ......................... .32, 34, 42
Splice Z1-4 ............7,27,28,29,32,34,42,45,49
Splice Z1-5 .................... .55, 57, 60, 61, 63
Splice Z1-6 ...............................38
Splice Z1-7 ........................... .70, 72
Splice Z1-8 ........................... .67, 70
Splice Z1-10 ........................... .32, 34
Splice Z1-11 ........................ .32, 34, 42
Splice Z1-12 .............. .55, 57, 60, 61, 63, 69, 71
Splice Z1-14 ........................... .27, 28
Splice Z2 ................................38
Splice Z12 ............................ .14, 21
Splice Z13 ...............................25
Splice Z14 ...............................25
Steering Column Connectors ......................81
Steering Multi-Function Switch Column Connectors .......82
Stereo Radio ................................65
Stop Lamp System ............................29
Stop Lamp Switch ............................29
Switches A/C Cycling Clutch Switch ......................48
A/C Switch ...............................47
A/C Heater Blower Switch ......................47
A/C High Pressure Switch ......................48
A/C Low Pressure Switch ......................48
Back-Up Lamp Switch .....................7,8,9
Blower Switch-A/C Heater ......................47
Brake Warning Lamp Switch ....................11
Clutch Pedal Position Switch ...................7,9
Defrost Switch .............................47
Door Lock Switch (2-dr) ................... .61, 62
Door Lock Switch (4-dr) ................... .63, 64
Door Jamb Switch ....................... .39, 40
Dual Mirror Control Switch .....................55
Engine Oil Pressure Switch .....................12
Fog Lamp Switch ........................ .31, 33
Glove Box Lamp Switch .......................39
Hazard Flasher Switch ........................52Wiring Diagram
Name Sheet Number
Headlamp Switch .........................1,36
Heated Rear Window Switch ....................67
Heater Bi-level Control Switch ...................46
Horn Switch ..............................42
Ignition Switch ...........................2,11
Liftgate Latch Switch .........................40
Mercury Switch ............................12
Park Brake Switch ...........................11
Park/Neutral Position Switch .....................8
Park/Neutral Start Switch ......................23
Power Mirrors Switch ........................55
Power Seat Switch ..........................60
Power Steering Pressure Switch ..................19
Power Window Switch (2 Dr) ...................57
Power Window Switch (4 Dr) ...................58
Seat Belt Warning Switch ......................44
Speed Control Switch ........................29
Stop Lamp Switch ..........................29
Transmission Range Switch .....................25
Transmission Solenoids and Pressure Switch ..........25
Turn Signal Flasher Switch .....................52
Vehicle Speed Control Switch ...................29
Wiper Park Switch ..........................54
Wiper Switch ..............................53
Temperature Sending Unit .......................18
Time Delay Relay .............................44
Throttle Position (Sensor) 2.2L ....................16
Throttle Position (Sensor) 2.5L ....................16
THrottle Position (Sensor) 3.0L ....................20
Transmission Control Module Connector ..............91
Transmission Control System ................23, 24, 25
Back-up Lamp Relay .........................23
Output Speed Sensor .........................24
Park/Neutral Switch ..........................23
Safety Shut Down Relay .......................25
Transmission Control Module ...............23, 24, 25
Transmission Range Switch .....................25
Transmission Solenoids and Pressure Switch ..........25
Turbine Speed Sensor ........................24
Transmission EMCC Solenoid ......................8
Transmission Solenoid Connector ..................92
Transmission Solenoids and Pressure Switch ...........25
Turn and Hazard Flasher System .................51, 52
Hazard Flasher ......................... .51, 52
Switch ..................................52
Turn Signal Flasher ..........................51
Turn Signal Lamps ..........31, 32, 33, 34, 69, 70, 71, 72
Underhood Lamp .............................12
Vehicle Speed Control Servo ......................29
Vehicle Speed Control and Stop Lamp System ..........29
Clockspring ................................29
Powertrain Control Module .......................29
Stop Lamp Switch with Vehicle Speed Control ..........29
Stop Lamp without Vehicle Speed Control .............29
Vehicle Speed Control Servo ......................29
Vehicle Speed Control Switch .....................29
Wiper System ........................... .53, 54
Ä WIRING DIAGRAMS AP BODY D-P 8W - 721

Wiring Diagram
Name Sheet Number
Control Unit ...............................54
Park Switch ...............................54
Washer Pump Motor .........................53Wiring Diagram
Name Sheet Number
Washer Low Fluid Level Sensor ..................53
Wiper Motor ..............................54
Wiper Switch ..............................53
8W - 722 WIRING DIAGRAMS AP BODY D-P Ä

(2) Clean varnish deposits from inside of tappet
body above plunger cap. (3) Invert tappet body and remove plunger cap,
plunger, flat or ball check valve, check valve spring,
check valve retainer and plunger spring. Check valve
could be flat or ball.
CLEANING AND ASSEMBLY
(1) Clean all tappet parts in a solvent that will re-
move all varnish and carbon. (2) Replace tappets that are unfit for further ser-
vice with new assemblies. (3) If plunger shows signs of scoring or wear, valve
is pitted, or valve seat on end of plunger indicates
any condition that would prevent valve from seating,
install a new tappet assembly. (4) Assemble tappets (Fig. 27).
INSTALLATION
(1) Lubricate tappets.
(2) Install tappets in their original positions.
(3) With roller tappets, install aligning yokes with
(Fig. 26). (4) Install yoke retainer and torque screws to 12
N Im (105 in. lbs.) (Fig. 26).
(5) Install cylinder heads. Refer to cylinder head
installation of this section for procedure. (6) Start and operate engine. Warm up to normal
operating temperature.
CAUTION: To prevent damage to valve mechanism,
engine must not be run above fast idle until all hy-
draulic tappets have filled with oil and have become
quiet.
VALVE TIMING
(1) Remove front valve cover and all 6 spark plugs.
(2) Rotate engine until the #2 piston is at TDC of
the compression stroke. (3) Install a degree wheel on the crankshaft pulley.
(4) With proper adaptor, install a dial into #2
spark plug hole. Using the indicator find TDC on the
compression stroke. (5) Position the degree wheel to zero.
(6) Remove dial indicator from spark plug hole. (7) Place a 5.08mm (.200 inch) spacer between the
valve stem tip of #2 intake valve and rocker arm
pad. Allow tappet to bleed down to give a solid tap-
pet effect. (8) Install a dial indicator so plunger contacts the
#2 intake valve spring retainer as nearly perpendic-
ular as possible. Zero the indicator. (9) Rotate the engine clockwise until the in take
valve has lifted .254mm (0.010 inch).
CAUTION: Do not turn crankshaft any further clock-
wise as intake valve might bottom and result in se-
rious damage.
(10) Degree wheel should read 3 degrees BTDC to
4 degrees ATDC.
TIMING CHAIN COVER, OIL SEAL AND CHAIN
COVER
REMOVAL
(1) Disconnect battery.
(2) Drain cooling system. Refer to Cooling System
Group 7 for procedure. (3) Support engine and remove right engine
mount. (4) Raise vehicle on hoist. Drain engine oil.
(5) Remove oil pan and oil pump pick-up. It may
necessary to remove transmission inspection cover. (6) Remove right wheel and inner splash shield.
(7) Remove drive belt. Refer to Cooling System
Group 7 for procedure. (8) Remove A/C compressor and set aside.
(9) Remove A/C compressor mounting bracket.
(10) Remove crankshaft pulley (Fig. 1).
(11) Remove idler pulley from engine bracket.
(12) Remove engine bracket (Fig. 2).
(13) Remove cam sensor from chain case cover
(Fig. 3).
Fig. 27 Hydraulic Roller Tappet Assembly
Fig. 1 Removing Crankshaft Pulley
Ä 3.3/3.8L ENGINE 9 - 109

(3) Rotate crankshaft so that the oil pump drive
flats are vertical. (4) Position oil pump inner rotor so the mating
flats are in the same position as the crankshaft drive
flats (Fig. 6). (5) Install cover onto crankshaft. Make sure the oil
pump is engaged on the crankshaft correctly or se-
vere damage may result. (6) Install chain case cover screws and torque to 27
N Im (20 ft. lbs.).
(7) Install crankshaft oil seal (Fig. 7).
(8) Install crankshaft pulley (Fig. 8).
(9) Install engine bracket (Fig. 2) torque screws to
54 N Im (40 ft. lbs.).
(10) Install idler pulley on engine bracket. (11) Install cam sensor Refer to Ignition System
Group 8D for installation procedure. (12) Install A/C compressor mounting bracket.
(13) Install A/C compressor.
(14) Install drive belt Refer to Cooling System
Group 7 for installation procedure. (15) Install inner splash shield and wheel.
(16) Install oil pump pick-up and oil pan and
transmission inspection cover if removed. (17) Install engine mount.
(18) Fill crankcase with oil to proper level.
(19) Fill cooling system Refer to Cooling System
Group 7 for procedure. (20) Connect battery.
TIMING CHAIN COVER EXTERNAL OIL SEAL
REMOVAL
(1) Raise vehicle on hoist. Remove right wheel and
inner splash shield. (2) Remove drive belt. (Refer to Cooling System
Group 7) for procedure. (3) Remove crankshaft pulley (Fig. 1).
Fig. 5 Alignment of Timing Marks
Fig. 6 Timing Chain Case Cover Gaskets and O-Rings
Fig. 7 Install Crankshaft Oil Seal
Fig. 8 Installing Crankshaft Pulley
Ä 3.3/3.8L ENGINE 9 - 111

for diagnostic and service procedures on the air control
valve and temperature sensor located in the air
cleaner.
INTAKE AND EXHAUST MANIFOLDS SERVICEÐTBI
ENGINE
Intake and exhaust manifolds use a one piece gasket.
Service procedures requiring removal and installation
( of either ) must include both manifolds.
FUEL SYSTEM PRESSURE RELEASE PROCE- DURE
The Fuel System is under a constant pressure
of at least 265 kPa (39 psi). Before servicing the
fuel pump, fuel lines, fuel filter, throttle body or
fuel injector, the fuel system pressure must be
released. (a) Loosen fuel filler cap to release fuel tank pres-
sure. (b) Disconnect injector wiring harness from engine
harness. (c) Connect a jumper wire to ground terminal
Number 1 of the injector harness (Fig. 2) to engine
ground. (d) Connect a jumper wire to the positive terminal
Number 2 of the injector harness (Fig. 2) and touch
the battery positive post for no longer than 5 seconds.
This releases system pressure. (e) Remove jumper wires.
(f) Continue fuel system service.
REMOVAL
(1) Perform fuel system pressure release procedure
before attempting any repairs. (2) Disconnect negative battery cable. Drain cool-
ing system. Refer to Cooling System, Group 7 for pro-
cedure. (3) Remove air cleaner and disconnect all vacuum
lines, electrical wiring and fuel lines from throttle
body. (4) Remove throttle linkage.
(5) Loosen power steering pump and remove belt.
(6) Remove power brake vacuum hose from intake
manifold. (7) Disconnect EGR tube from intake manifold and
remove water hoses from water crossover. (8) Raise vehicle and remove exhaust pipe from
manifold. (9) Remove power steering pump assembly and set
aside. (10) Remove intake manifold retaining screws
(Fig. 3). (11) Lower vehicle and remove intake manifold.
(12) Remove exhaust manifold retaining nuts (Fig.
3). (13) Remove exhaust manifold.
Fig. 2 Injector Harness Connector
Fig. 3 Intake and Exhaust Manifold Attaching PointsÐ2.2/2.5L Engines
Fig. 1 Air HeaterÐTBI Engine
11 - 6 EXHAUST SYSTEM AND INTAKE MANIFOLD Ä

INTAKE MANIFOLD
REMOVAL (1) Perform fuel system pressure release procedure
before attempting any repairs. (2) Disconnect negative battery cable.
(3) Remove air cleaner hose to throttle body (Fig.
6).
(4) Remove accelerator and speed control cables.
(5) Disconnect automatic idle speed (AIS) motor
and throttle position sensor (TPS) wiring connectors
(Fig. 7). (6) Disconnect fuel injectors wiring connector.
(7) Remove supply and return lines from the fuel
tube assembly quick connect at frame rail. Open fuel
tube clip around fuel tubes. WARNING: WRAP SHOP TOWELS AROUND HOSES
TO CATCH ANY FUEL SPILLAGE.
(8) Disconnect fuel pressure regulator vacuum hose
from regulator (Fig. 8). (9) Remove PCV vacuum harness, brake booster,
and vacuum vapor harness from intake manifold
(Fig. 8). (10) Remove 8 intake manifold screws and washer
assemblies and remove intake manifold assembly
(Fig. 9).
Fig. 5 Releasing Fuel Pressure
Fig. 6 Air Cleaner Hose to Throttle Body Assembly
Fig. 7 Throttle Position Sensor and Air Idle Control Motor Electrical Connections
Fig. 8 Electrical and Vacuum Hose Connection
11 - 8 EXHAUST SYSTEM AND INTAKE MANIFOLD Ä

EXHAUST MANIFOLD
REMOVAL (1) Disconnect exhaust pipe from manifold articu-
late joint. (2) Disconnect the heated oxygen sensor electrical
connection. (3) Remove 8 exhaust manifold retaining nuts and
remove exhaust manifold (Fig. 9).
CLEANING AND INSPECTION
(1) Discard gasket and clean all gasket surfaces of
manifolds and cylinder head. (2) Test gasket surfaces for flatness with straight
edge. Surface must be flat within 0.15 mm per 300
mm (.006 in. per foot) of manifold length. (3) Inspect manifolds for cracks or distortion.
EXHAUST MANIFOLD
INSTALLATION
(1) Install new two-sided grafoil or equivalent in-
take/exhaust manifold gasket. DO NOT APPLY
SEALER. (2) Set exhaust manifold in place. Install and
tighten retaining nuts, starting at center and pro-
gressing outward in both directions to 23 N Im (200
in. lbs.) torque. Repeat this procedure until all nuts
are at specified torque.
INTAKE MANIFOLD
INSTALLATION
(1) Position intake manifold, install, and tighten 8
retaining screws starting at center and progressing
outward in both directions to 23 N Im (200 in. lbs.)
torque. Repeat this procedure until all screws are at
specified torque (Fig. 9). (2) Install PCV vacuum harness and vacuum vapor
harness (Fig. 8). (3) Connect vacuum hose from fuel pressure regu-
lator. (4) Connect fuel injector wiring connector (Fig. 8).
(5) Close fuel tube clip around fuel tubes and in-
stall fastener. (6) Lubricate the ends of the chassis fuel tubes
with 30 wt oil. Connect fuel supply and return hoses
to chassis fuel tube assembly. pull back on the quick
connect fitting to ensure complete insertion. (Refer to
Fuel Hoses, Clamps and Quick Connect Fittings in
Group 14 Fuel Systems). (7) Connect automatic idle speed (AIS) motor and
throttle position sensor (TPS) wiring connectors (Fig.
7). (8) Connect accelerator and speed control cables.
Install brake booster vacuum supply hoses. (9) Reconnect negative battery cable.
(10) Install air cleaner hose to throttle body assem-
bly (Fig. 6). (11) With the DRBII Scan Tool use ASD Fuel Sys-
tem Test to pressurize system to check for leaks.
CAUTION: When using the ASD Fuel System Test,
the Auto Shutdown (ASD) relay will remain ener-
gized for 7 minutes or until the ignition switch is
turned to the OFF position, or Stop All Test is se-
lected.
INTAKE/EXHAUST MANIFOLDS AND
TURBOCHARGER SERVICEÐTURBO III ENGINE
INTAKE MANIFOLD
REMOVAL
(1) Perform fuel system pressure release procedure
before attempting any repairs. (2) Disconnect negative battery cable. Drain cool-
ing system. Refer to Cooling System, Group 7. (3) Remove fresh air duct from air filter housing.
Remove inlet hose from the intercooler (Fig. 1). (4) Remove radiator hose to cylinder head (Fig. 2).
(5) Remove DIS Ignition Coils from intake mani-
fold (Fig. 3). (6) Remove accelerator and speed control cables
(Fig. 4).
Fig. 9 Intake and Exhaust Manifolds Attaching Points
Ä EXHAUST SYSTEM AND INTAKE MANIFOLD 11 - 9

(7) Disconnect Intercooler to throttle body outlet
hose. Disconnect vacuum hoses from throttle body
and remove harness (Fig. 5).
(8) Disconnect automatic idle speed (AIS) motor
and throttle position sensor (TPS) wiring connectors
(Fig. 6). (9) Remove PCV Breather/Separator box and vac-
uum harness assembly. Remove brake booster, vac-
uum vapor harness and fuel pressure regulator
harness from intake manifold (Fig. 7). (10) Disconnect Fuel Injector Wiring Connector
(Fig. 8). Charge Temperature Wiring Connector (Fig.
7). (11) Remove fuel supply and return hose quick
connect at fuel tube assembly (Fig. 9). WARNING: WRAP SHOP TOWELS AROUND HOSES
TO CATCH ANY GASOLINE SPILLAGE
.
(12) Remove 8 intake manifold screws and washer
assemblies and remove intake manifold (Fig. 10).
INSTALLATION
Before installing manifold. Refer to Cleaning and
Inspection of this section to check manifold for dam-
age. (1) Install new intake manifold gasket and intake
manifold onto cylinder head and tighten fasteners to
23 N Im (200 in. lbs.) torque (Fig. 10).
(2) Install PCV Breather/Separator box and vac-
uum harness assembly. Connect brake booster, vac-
uum vapor harness and vacuum hose to fuel pressure
regulator (Fig. 7).
Fig. 1 Air Cleaner and Throttle Body AssemblyÐTurbo III Engine
Fig. 2 Radiator to Cylinder Head Hose
Fig. 3 Distributorless Ignition Coil (DIS) Location
Fig. 4 Accelerator and Speed Control Cables
11 - 10 EXHAUST SYSTEM AND INTAKE MANIFOLD Ä