2004 CHRYSLER VOYAGER oil level

Component Page
Horn Relay.................. 8W-10-17, 35, 60
Ignition Coil....................... 8W-10-42
Ignition Switch . . . 8W-10-18, 25, 36, 37, 45, 46, 49,
54, 55, 61
Instrument Cluster............... 8W-10-25, 52
Instrument Panel Switch Bank........ 8W-10-68
Integrated Power Module....... 8W-10-3, 4, 5, 13,
15, 16, 17, 18, 19, 20, 21,
22, 23, 24, 25, 26, 27, 28,
29, 30, 31, 32, 35, 36, 37,
38, 39, 40, 41, 42, 43, 44,
45, 47, 48, 49, 50, 52, 53,
54, 55, 56, 57, 58, 59, 60,
61, 62, 63, 64, 65, 66, 67, 68
Left Door Speaker.................. 8W-10-39
Left Fog Lamp.................. 8W-10-15, 27
Left Front Park/Turn
Signal Lamp............ 8W-10-15, 28, 57, 66
Left Headlamp..................... 8W-10-58
Left Headlamp Leveling Motor . . . 8W-10-29, 63, 66
Left High Beam Lamp............... 8W-10-59
Left Low Beam Lamp................ 8W-10-59
Left Park Lamp................. 8W-10-29, 66
Left Power Mirror................... 8W-10-39
Left Rear Lamp Assembly....... 8W-10-28, 29, 66
Left Rear Speaker.................. 8W-10-39
Left Repeater Lamp................. 8W-10-52
Left Sliding Door Control Module....... 8W-10-53
Left Turn Signal Lamp............... 8W-10-57
License Lamp................ 8W-10-28, 29, 66
Lift Pump Motor................. 8W-10-23, 43
Lift Pump Relay................. 8W-10-23, 43
Low Note Horn..................... 8W-10-35
Mass Air Flow Sensor................ 8W-10-44
Memory Seat/Mirror Module.......... 8W-10-50
Message Center.................... 8W-10-52
Name Brand Speaker Relay..... 8W-10-20, 39, 60
Overhead Console................... 8W-10-40
Park Lamp Relay.......... 8W-10-15, 28, 29, 60
Passenger Folding Mirror
Relay.................. 8W-10-22, 24, 45, 48
Passenger Heated Seat Module........ 8W-10-51
Passenger Power Seat Switch.......... 8W-10-51
Passenger Power Window Switch....... 8W-10-31
Power Liftgate Module............... 8W-10-53
Power Mirror Switch........ 8W-10-22, 24, 47, 48
Power Outlet...................... 8W-10-35
Power Seat Circuit Breaker........ 8W-10-25, 50Component Page
Power Window Circuit Breaker...... 8W-10-16, 31
Power Window Switch............... 8W-10-33
Powertrain Control Module..... 8W-10-18, 21, 22,
36, 41, 42, 45, 56, 62, 63, 68
PTC4 ......................... 8W-10-20, 39
PTC7 ................... 8W-10-16, 17, 18, 35
Radiator Fan Relay............ 8W-10-26, 52, 56
Radiator Fan Relay No. 1.......... 8W-10-13, 44
Radiator Fan Relay No. 2....... 8W-10-26, 44, 52
Radiator Fan Relay No. 3............. 8W-10-44
Radio......................... 8W-10-32, 40
Rear A/C-Heater Unit............. 8W-10-19, 38
Rear Blower Motor Power Module . . . 8W-10-19, 38
Rear Blower Motor Relay.... 8W-10-19, 20, 38, 64
Rear Power Outlet............ 8W-10-16, 31, 32
Rear Window Defogger Grid........ 8W-10-20, 39
Rear Wiper Motor................... 8W-10-31
Right Door Speaker................. 8W-10-39
Right Fog Lamp................. 8W-10-15, 27
Right Front Park/Turn
Signal Lamp............ 8W-10-15, 28, 57, 61
Right Headlamp.................... 8W-10-58
Right Headlamp Leveling Motor . . 8W-10-29, 61, 63
Right High Beam Lamp.............. 8W-10-59
Right Low Beam Lamp............... 8W-10-59
Right Park Lamp................ 8W-10-29, 61
Right Power Mirror................. 8W-10-39
Right Rear Lamp
Assembly............ 8W-10-15, 28, 29, 61, 67
Right Rear Speaker................. 8W-10-39
Right Repeater Lamp................ 8W-10-52
Right Sliding Door Control Module..... 8W-10-53
Right Turn Signal Lamp.............. 8W-10-57
Sentry Key Remote Entry
Module.............. 8W-10-40, 46, 49, 54, 55
Siren............................. 8W-10-40
Starter Motor.......... 8W-10-13, 14, 18, 36, 37
Starter Motor Relay...... 8W-10-18, 36, 37, 54, 55
Sunroof Module.................. 8W-10-31, 53
Thatcham Alarm Module . . 8W-10-40, 46, 49, 55, 68
Trailer Tow Connector............ 8W-10-28, 66
Transmission Control Relay........ 8W-10-21, 41
Transmission Solenoid/Pressure Switch
Assembly....................... 8W-10-41
Vehicle Speed Sensor................ 8W-10-43
Washer Fluid Level Switch............ 8W-10-61
Washer Pump Motor................. 8W-10-68
Wiper Module................ 8W-10-16, 30, 60
8W - 10 - 2 8W-10 POWER DISTRIBUTIONRS

8W-40 INSTRUMENT CLUSTER
Component Page
Airbag Control Module................ 8W-40-2
Body Control Module......... 8W-40-2, 3, 4, 5, 6,
7, 8, 9, 11, 12
Brake Fluid Level Switch.............. 8W-40-9
Clockspring........................ 8W-40-10
Controller Antilock Brake.......... 8W-40-10, 14
Engine Control Module.......... 8W-40-8, 10, 14
Engine Coolant Temp Sensor......... 8W-40-7, 8
Engine Oil Pressure Sensor........... 8W-40-14
Engine Oil Pressure Switch........... 8W-40-14
Front Control Module........ 8W-40-9, 10, 13, 14
Fuel Pump Module................... 8W-40-2
Fuse 24............................ 8W-40-2
G200..................... 8W-40-2, 11, 12, 13
G300.............................. 8W-40-9
Instrument Cluster........ 8W-40-2, 3, 4, 5, 6, 7,
8, 9, 11, 12, 13
Integrated Power Module........ 8W-40-2, 7, 8, 9,
10, 13, 14
Left Front Door Ajar Switch............ 8W-40-3
Left Front Door Lock Motor/Ajar Switch . . 8W-40-3Component Page
Left Sliding Door Control Module........ 8W-40-4
Left Sliding Door Latch Sensing Switch . . . 8W-40-4
Left Sliding Door Lock Motor/Ajar Switch . 8W-40-4
Left Speed Control Switch............ 8W-40-10
Liftgate Ajar Switch.................. 8W-40-3
Liftgate Cinch/Release Motor........... 8W-40-3
Message Center.................. 8W-40-6, 13
Multi-Function Switch................ 8W-40-6
Parking Brake Switch............. 8W-40-11, 12
Powertrain Control Module....... 8W-40-7, 10, 14
Right Front Door Ajar Switch........... 8W-40-3
Right Front Door Lock Motor/Ajar
Switch.......................... 8W-40-3
Right Sliding Door Control Module...... 8W-40-5
Right Sliding Door Latch Sensing Switch . . 8W-40-5
Right Sliding Door Lock Motor/Ajar
Switch.......................... 8W-40-5
Right Speed Control Switch........... 8W-40-10
Traction Control Switch............. 8W-40-7, 8
Vehicle Speed Sensor............... 8W-40-7, 8
Washer Fluid Level Switch............. 8W-40-9
RS8W-40 INSTRUMENT CLUSTER8W-40-1

Component Page
Floor Console Lamp................. 8W-80-72
Floor Console Power Outlet........... 8W-80-72
Front Blower Module C1 (ATC)........ 8W-80-73
Front Blower Module C2 (ATC)........ 8W-80-73
Front Cigar Lighter................. 8W-80-73
Front Control Module................ 8W-80-74
Front Intrusion Sensor (United
Kingdom)....................... 8W-80-75
Front Reading Lamps/Switch.......... 8W-80-75
Fuel Heater (Diesel)................. 8W-80-75
Fuel Injector No. 1 (2.4L/3.3L/3.8L)..... 8W-80-75
Fuel Injector No. 1 (Diesel)............ 8W-80-75
Fuel Injector No. 2 (2.4L/3.3L/3.8L)..... 8W-80-76
Fuel Injector No. 2 (Diesel)............ 8W-80-76
Fuel Injector No. 3 (2.4L/3.3L/3.8L)..... 8W-80-76
Fuel Injector No. 3 (Diesel)............ 8W-80-76
Fuel Injector No. 4 (2.4L/3.3L/3.8L)..... 8W-80-77
Fuel Injector No. 4 (Diesel)............ 8W-80-77
Fuel Injector No. 5 (3.3L/3.8L)......... 8W-80-77
Fuel Injector No. 6 (3.3L/3.8L)......... 8W-80-77
Fuel Pressure Sensor (Diesel).......... 8W-80-78
Fuel Pressure Solenoid (Diesel)........ 8W-80-78
Fuel Pump Module.................. 8W-80-78
Generator......................... 8W-80-78
Glow Plug Relay (Diesel)............. 8W-80-79
Headlamp Switch................... 8W-80-79
Headlamp Washer Pump Motor (Export) . 8W-80-79
High Note Horn.................... 8W-80-79
Hood Ajar Switch (Export)............ 8W-80-80
Idle Air Control Motor (Gas)........... 8W-80-80
Ignition Coil (2.4L).................. 8W-80-80
Ignition Coil (3.3L/3.8L).............. 8W-80-80
Ignition Switch..................... 8W-80-80
Inlet Air Temperature Sensor.......... 8W-80-81
Input Speed Sensor................. 8W-80-81
Instrument Cluster.................. 8W-80-81
Instrument Panel Switch Bank (Heated
Seats).......................... 8W-80-81
Instrument Panel Switch Bank (Except Heated
Seats).......................... 8W-80-82
Integrated Power Module C1.......... 8W-80-82
Integrated Power Module C2.......... 8W-80-83
Integrated Power Module C3.......... 8W-80-83
Integrated Power Module C4.......... 8W-80-84
Integrated Power Module C5.......... 8W-80-84
Integrated Power Module C6.......... 8W-80-84
Integrated Power Module C7.......... 8W-80-85
Integrated Power Module C8.......... 8W-80-85
Integrated Power Module C9.......... 8W-80-86
Knock Sensor (2.4L)................. 8W-80-86
Knock Sensor (3.3L/3.8L ABS Except
Export)......................... 8W-80-86
Left B-Pillar Switch (Power Sliding
Door).......................... 8W-80-86Component Page
Left Cinch/Release Motor (Power Sliding
Door).......................... 8W-80-87
Left Cylinder Lock Switch............ 8W-80-87
Left Door Speaker (Highline).......... 8W-80-87
Left Door Speaker (Lowline)........... 8W-80-87
Left Fog Lamp (Except Export)........ 8W-80-87
Left Fog Lamp (Export).............. 8W-80-88
Left Front Door Ajar Switch (Base)..... 8W-80-88
Left Front Door Lock Motor/Ajar Switch (Except
Base).......................... 8W-80-88
Left Front Impact Sensor (Except
Export)......................... 8W-80-88
Left Front Park/Turn Signal Lamp (Except
Export)......................... 8W-80-89
Left Front Wheel Speed Sensor........ 8W-80-89
Left Full Open Switch (Power Sliding
Door).......................... 8W-80-89
Left Headlamp (Except Export)........ 8W-80-89
Left Headlamp Leveling Motor (Export) . . 8W-80-90
Left High Beam Lamp (Export)........ 8W-80-90
Left Instrument Panel Speaker........ 8W-80-90
Left Liftgate Flood Lamp (Power
Liftgate)........................ 8W-80-90
Left Low Beam Lamp (Export)......... 8W-80-90
Left Mid Reading Lamp (Premium/
Luxury)........................ 8W-80-91
Left Park Lamp (Export)............. 8W-80-91
Left Power Mirror................... 8W-80-91
Left Rear Lamp Assembly............ 8W-80-91
Left Rear Pillar Speaker.............. 8W-80-92
Left Rear Reading Lamp (Luxury)...... 8W-80-92
Left Rear Speaker (Lowline)........... 8W-80-92
Left Rear Speaker (Highline).......... 8W-80-92
Left Rear Vent Motor................ 8W-80-92
Left Rear Wheel Speed Sensor......... 8W-80-93
Left Remote Radio Switch............ 8W-80-93
Left Repeater Lamp (Export).......... 8W-80-93
Left Seat Airbag.................... 8W-80-93
Left Side Impact Sensor 1 (Premium
ORC).......................... 8W-80-94
Left Sliding Door Control Module C1 (Power Sliding
Door).......................... 8W-80-94
Left Sliding Door Control Module C2 (Power Sliding
Door).......................... 8W-80-94
Left Sliding Door Latch Sensing Switch (Power
Sliding Door).................... 8W-80-95
Left Sliding Door Lock Motor (Power Sliding
Door).......................... 8W-80-95
Left Sliding Door Lock Motor/Ajar Switch (Manual
Sliding Door).................... 8W-80-95
Left Sliding Door Motor (Power Sliding
Door).......................... 8W-80-95
Left Speed Control Switch............ 8W-80-96
Left Turn Signal Lamp (Export)........ 8W-80-96
RS8W-80 CONNECTOR PIN-OUTS8W-80-3

CONNECTOR NAME/NUMBER COLOR LOCATION FIG.
Ignition Coil (2.4L) BK Top of Valve Cover 10, 11
Ignition Coil (3.3L/ 3.8L) DKGY Top of Engine 17, 18
Ignition Switch BK Rear of Switch at Steering Column 20, 21, 22, 23, 31
Inlet Air Temperature Sensor BK Top Left of Engine 9, 10, 11, 17
Input Speed Sensor GY Front of Transmission 14, 19
Instrument Cluster BK Rear of Cluster 20, 21, 28
Instrument Panel Switch Bank
(Heated Seats)BK Right Center of Instrument Panel 20, 23, 25
Instrument Panel Switch Bank
(Except Heated Seats)Right Center of Instrument Panel 20, 23, 25
Integrated Power Module C1 Left Fender Shield 6, 7
Integrated Power Module C2 GN/BL Left Fender Shield 6, 7
Integrated Power Module C3 Left Fender Shield 6, 7, 11
Integrated Power Module C4 BL Left Fender Shield 6, 7, 11
Integrated Power Module C5 BK Left Fender Shield 6, 7
Integrated Power Module C6 NAT Left Fender Shield 6, 7
Integrated Power Module C7 Left Fender Shield 6, 7
Integrated Power Module C8 OR Left Fender Shield 6, 7
Integrated Power Module C9 BK Left Fender Shield 6, 7
Knock Sensor (2.4L) BK At Engine Block N/S
Knock Sensor (3.3L/3.8L ABS
Except Export)GY Front of Cylinder Block 11
Left B Pillar Switch (Power
Sliding Door)GY Left B Pillar 40
Left Cinch/Release Motor (Power
Sliding Door)GY Left Sliding Door N/S
Left Cylinder Lock Switch BK At Switch 43
Left Door Speaker (Highline) BK/RD At Speaker 43
Left Door Speaker (Lowline) In Door N/S
Left Fog Lamp (Except Export) BK At Lamp N/S
Left Fog Lamp (Export) WT At Lamp 5
Left Front Door Ajar Switch
(Base)BK At Switch N/S
Left Front Door Lock Motor/Ajar
Switch (Except Base)BK Left Door 43
Left Front Impact Sensor (Except
Export)BK Near T/O for C300 N/S
Left Front Park/Turn Signal Lamp
(Except Export)DKGY At Lamp 1
Left Front Wheel Speed Sensor GY Left Fender Side Shield 5, 11
Left Full Open Switch (Power
Sliding Door)BK Left Sliding Door N/S
Left Headlamp (Except Export) BK At Lamp 1
Left Headlamp Leveling Motor
(Export)WT At Motor N/S
8W - 91 - 6 8W-91 CONNECTOR/GROUND/SPLICE LOCATIONRS
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

REMOVAL - CYLINDER HEAD OFF........32
INSPECTION..........................32
INSTALLATION
INSTALLATION - CYLINDER HEAD ON.....33
INSTALLATION - CYLINDER HEAD OFF....33
HYDRAULIC LASH ADJUSTERS
DIAGNOSIS AND TESTING - HYDRAULIC
LASH ADJUSTER NOISE DIAGNOSIS......34
REMOVAL.............................34
INSTALLATION.........................34
ROCKER ARMS
REMOVAL.............................34
INSPECTION..........................35
INSTALLATION.........................35
ENGINE BLOCK
DESCRIPTION.........................35
STANDARD PROCEDURE - CYLINDER BORE
HONING............................35
CLEANING............................36
INSPECTION..........................36
CRANKSHAFT
STANDARD PROCEDURE - CRANKSHAFT
ENDPLAY ...........................36
REMOVAL - CRANKSHAFT................37
INSPECTION..........................37
INSTALLATION - CRANKSHAFT............38
CRANKSHAFT OIL SEAL - FRONT
REMOVAL.............................40
INSTALLATION.........................40
CRANKSHAFT OIL SEAL - REAR
REMOVAL.............................41
INSTALLATION.........................42
PISTON & CONNECTING ROD
DESCRIPTION.........................42
STANDARD PROCEDURE - PISTON TO
CYLINDER BORE FITTING..............42
REMOVAL.............................43
INSTALLATION.........................44
CONNECTING ROD BEARINGS
STANDARD PROCEDURE
CONNECTING ROD - FITTING...........45
PISTON RINGS
STANDARD PROCEDURE
PISTON RING - FITTING................45
REMOVAL.............................46
INSTALLATION.........................46
VIBRATION DAMPER
REMOVAL.............................47
INSTALLATION.........................47
STRUCTURAL COLLAR
REMOVAL.............................47
INSTALLATION.........................48
ENGINE MOUNTING
DESCRIPTION.........................48
FRONT MOUNT
REMOVAL.............................49
INSTALLATION.........................49LEFT MOUNT
REMOVAL.............................49
INSTALLATION.........................50
REAR MOUNT
REMOVAL.............................50
INSTALLATION.........................50
RIGHT MOUNT
REMOVAL.............................51
INSTALLATION.........................51
LUBRICATION
DESCRIPTION.........................52
OPERATION...........................52
DIAGNOSIS AND TESTING - CHECKING
ENGINE OIL PRESSURE................52
OIL
STANDARD PROCEDURE
ENGINE OIL LEVEL CHECK.............53
STANDARD PROCEDURE - ENGINE OIL
AND FILTER CHANGE..................53
OIL FILTER
DESCRIPTION.........................53
REMOVAL.............................53
INSTALLATION.........................53
OIL PAN
REMOVAL.............................54
INSTALLATION.........................54
OIL PRESSURE SWITCH
REMOVAL.............................54
INSTALLATION.........................54
OIL PUMP
REMOVAL.............................55
DISASSEMBLY.........................55
CLEANING............................56
INSPECTION..........................56
ASSEMBLY............................56
INSTALLATION.........................57
INTAKE MANIFOLD
DESCRIPTION.........................58
DIAGNOSIS AND TESTING - INTAKE
MANIFOLD LEAKS.....................58
INTAKE MANIFOLD - UPPER
REMOVAL.............................58
INSPECTION..........................59
INSTALLATION.........................59
INTAKE MANIFOLD - LOWER
REMOVAL.............................60
INSPECTION..........................60
INSTALLATION.........................60
EXHAUST MANIFOLD
REMOVAL.............................61
CLEANING............................61
INSPECTION..........................61
INSTALLATION.........................61
TIMING BELT COVER(S)
REMOVAL.............................61
INSTALLATION.........................62
9 - 2 ENGINE 2.4LRS

DIAGNOSIS AND TESTING - ENGINE DIAGNOSIS - MECHANICAL
CONDITION POSSIBLE CAUSES CORRECTION
NOISY VALVES 1. High or low oil level in
crankcase.1. Check and correct engine oil
level.
2. Thin or diluted oil. 2. Change oil to correct viscosity.
3. Thick oil 3. (a) Change engine oil and filter.
(b) Run engine to operating
temperature.
(c) Change engine oil and filter
again.
4. Low oil pressure. 4. Check and correct engine oil
pressure problem.
5. Dirt in hydraulic lifters/lash
adjusters.5. Replace hydraulic lifters/lash
adjusters.
6. Worn rocker arms. 6. Inspect oil supply to rocker arms.
7. Worn hydraulic lifters/lash
adjusters.7. Replace hydraulic lifters/lash
adjusters.
8. Worn valve guides. 8. Replace cylinder head assembly.
9. Excessive runout of valve seats
on valve faces.9. Grind valve seats and valves.
CONNECTING ROD NOISE 1. Insufficient oil supply. 1. Check engine oil level.
2. Low oil pressure. 2. Check engine oil level. Inspect oil
pump relief valve and spring.
3. Thin or diluted oil. 3. Change oil to correct viscosity.
4. Thick oil 4. (a) Change engine oil and filter.
(b) Run engine to operating
temperature.
(c) Change engine oil and filter
again.
5. Excessive bearing clearance. 5. Measure bearings for correct
clearance. Repair as necessary.
6. Connecting rod journal
out-of-round.6. Replace crankshaft or grind
surface.
7. Misaligned connecting rods. 7. Replace bent connecting rods.
9 - 6 ENGINE 2.4LRS
ENGINE 2.4L (Continued)

CONDITION POSSIBLE CAUSES CORRECTION
MAIN BEARING NOISE 1. Insufficient oil supply. 1. Check engine oil level.
2. Low oil pressure. 2. Check engine oil level. Inspect oil
pump relief valve and spring.
3. Thin or diluted oil. 3. Change oil to correct viscosity.
4. Thick oil 4. (a) Change engine oil and filter.
(b) Run engine to operating
temperature.
(c) Change engine oil and filter
again.
5. Excessive bearing clearance. 5. Measure bearings for correct
clearance. Repair as necessary.
6. Excessive end play. 6. Check thrust bearing for wear on
flanges.
7. Crankshaft journal out-of-round
or worn.7. Replace crankshaft or grind
journals.
8. Loose flywheel or torque
converter.8. Tighten to correct torque.
OIL PRESSURE DROP 1. Low oil level. 1. Check engine oil level.
2. Faulty oil pressure sensor/switch. 2. Replace oil pressure sensor/
switch.
3. Low oil pressure. 3. Check oil pressure sensor/switch
and main bearing oil clearance.
4. Clogged oil filter. 4. Install new oil filter.
5. Worn parts in oil pump. 5. Replace worn parts or pump.
6. Thin or diluted oil. 6. Change oil to correct viscosity.
7. Oil pump relief valve stuck. 7. Remove valve and inspect, clean,
or replace.
8. Oil pump suction tube loose. 8. Remove oil pan and install new
tube or clean, if necessary.
9. Oil pump cover warped or
cracked.9. Install new oil pump.
10. Excessive bearing clearance. 10. Measure bearings for correct
clearance.
OIL LEAKS 1. Misaligned or deteriorated
gaskets.1. Replace gasket(s).
2. Loose fastener, broken or porous
metal part.2. Tighten, repair or replace the
part.
3. Misaligned or deteriorated cup or
threaded plug.3. Replace as necessary.
RSENGINE 2.4L9-7
ENGINE 2.4L (Continued)

(3) Remove torque converter or clutch housing
cover and inspect rear of block for evidence of oil.
Use a black light to check for the oil leak. If a leak is
present in this area, remove transmission for further
inspection.
(a) Circular spray pattern generally indicates
seal leakage or crankshaft damage.
(b) Where leakage tends to run straight down,
possible causes are a porous block, oil gallery cup
plug, bedplate to cylinder block mating surfaces
and seal bore. See proper repair procedures for
these items.
(4) If no leaks are detected, pressurize the crank-
case as previously described.
CAUTION: Do not exceed 20.6 kPa (3 psi).
(5) If the leak is not detected, very slowly turn the
crankshaft and watch for leakage. If a leak is
detected between the crankshaft and seal while
slowly turning the crankshaft, it is possible the
crankshaft seal surface is damaged. The seal area on
the crankshaft could have minor nicks or scratches
that can be polished out with emery cloth.
CAUTION: Use extreme caution when crankshaft
polishing is necessary to remove minor nicks and
scratches. The crankshaft seal flange is especially
machined to complement the function of the rear oil
seal.
(6) For bubbles that remain steady with shaft
rotation, no further inspection can be done until dis-
assembled.
(7) After the oil leak root cause and appropriate
corrective action have been identified, replace compo-
nent(s) as necessary.
DIAGNOSIS AND TESTING - CYLINDER
COMPRESSION PRESSURE TEST
The results of a cylinder compression pressure test
can be utilized to diagnose several engine malfunc-
tions.
Ensure the battery is completely charged and the
engine starter motor is in good operating condition.
Otherwise the indicated compression pressures may
not be valid for diagnosis purposes.
(1) Check engine oil level and add oil if necessary.
(2) Drive the vehicle until engine reaches normal
operating temperature. Select a route free from traf-
fic and other forms of congestion, observe all traffic
laws, and accelerate through the gears several times
briskly.
(3) Remove all spark plugs from engine. As spark
plugs are being removed, check electrodes for abnor-
mal firing indicators fouled, hot, oily, etc. Record cyl-
inder number of spark plug for future reference.(4) Remove the Auto Shutdown (ASD) relay from
the PDC.
(5) Be sure throttle blade is fully open during the
compression check.
(6) Insert compression gauge adaptor Special Tool
8116 or the equivalent, into the #1 spark plug hole in
cylinder head. Connect the 0±500 psi (Blue) pressure
transducer (Special Tool CH7059) with cable adap-
tors to the DRBIIIt. For Special Tool identification,
(Refer to 9 - ENGINE - SPECIAL TOOLS).
(7) Crank engine until maximum pressure is
reached on gauge. Record this pressure as #1 cylin-
der pressure.
(8) Repeat the previous step for all remaining cyl-
inders.
(9) Compression should not be less than 689 kPa
(100 psi) and not vary more than 25 percent from cyl-
inder to cylinder.
(10) If one or more cylinders have abnormally low
compression pressures, repeat the compression test.
(11) If the same cylinder or cylinders repeat an
abnormally low reading on the second compression
test, it could indicate the existence of a problem in
the cylinder in question.The recommended com-
pression pressures are to be used only as a
guide to diagnosing engine problems. An engine
should not be disassembled to determine the
cause of low compression unless some malfunc-
tion is present.
DIAGNOSIS AND TESTING - CYLINDER
COMBUSTION PRESSURE LEAKAGE TEST
The combustion pressure leakage test provides an
accurate means for determining engine condition.
Combustion pressure leakage testing will detect:
²Exhaust and intake valve leaks (improper seat-
ing).
²Leaks between adjacent cylinders or into water
jacket.
²Any causes for combustion/compression pressure
loss.
WARNING: DO NOT REMOVE THE PRESSURE CAP
WITH THE SYSTEM HOT AND UNDER PRESSURE
BECAUSE SERIOUS BURNS FROM COOLANT CAN
OCCUR.
Check the coolant level and fill as required. DO
NOT install the pressure cap.
Start and operate the engine until it attains nor-
mal operating temperature, then turn the engine
OFF.
Clean spark plug recesses with compressed air.
Remove the spark plugs.
Remove the oil filler cap.
Remove the air cleaner.
RSENGINE 2.4L9-9
ENGINE 2.4L (Continued)