2003 FORD MUSTANG check oil

GENERAL PROCEDURES
Hydro-
Boost Bleeding
1. NOTE: The Hydro- Boost power brake booster (2B560) is generally self- bleeding, and the
following procedure will normally bleed the air from the power brake booster. Normal operation
of the vehicle will further remove any additional trapped air.
Fill the power steering oil reservoir (3A697) with MERCON® Multi- Purpose ATF XT-2-QDX or
MERCON® equivalent.
2. Remove the powertrain control module (PCM) fuse to prevent the engine from starting.
3. Crank the engine for several seconds.
4. Check the fluid level in the power steering oil reservoir and add if necessary. Install the powertrain control module (PCM) fuse.
5. Start the engine.
6. With the engine running, turn the steering wheel (3600) from stop- to-stop twice. Turn the engine
off.
7. Depress the brake pedal (2455) several times to discharge the accumulator.
8. Repeat Steps 5 and 6.
9. If foaming occurs, stop the engine and allow the foam to dissipate.
10. Repeat Steps 5 and 6 as required, until all the air is removed from the system (when the foaming stops).
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GENERAL PROCEDURES
System Flushing —
CII Power Steering Pump
WARNING: Do not mix oil types. Any mixture or any unapproved oil can lead to seal
deterioration and leaks. A leak can ultimately cause loss of fluid, which can result in a loss of
power steering assist.
1. Remove the fuel pump fuse from the battery junction box.
2. Disconnect the power steering return hose. Plug the reservoir.
3. Attach an extension hose between the power steering return hose and an empty container.
4. Raise the front wheels off the floor. For additional information, refer to Section 100 - 02 .
5. Check the fluid level. If necessary, fill the reservoir to the correct level. zUse Motorcraft MERCON® Multi-Purpose ATF XT -2-QDX or MERCON® equivalent.
6. CAUTION: Do not crank the engine for more than 15 seconds at a time. Allow the
starter to cool for 1 minute before cranking again. Premature starter failure can occur.
CAUTION: Do not hold the steering wheel against the stops for more than three to
five seconds at a time. Damage to the power steering pump will occur.
Turn the steering wheel from stop- to-stop while cranking the engine until the fluid exiting the
power steering return hose is clear of all contamination and foreign material.
zAdd Motorcraft MERCON® Multi-Purpose ATF XT -2-QDX or MERCON® equivalent as
needed.
7. Lower the vehicle.
8. Disconnect the extension hose from the power steering return hose. Remove the plug. Attach the power steering return hose to the reservoir.
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GENERAL PROCEDURES
System Flushing —
CIII Power Steering Pump
WARNING: Do not mix oil types. Any mixture or any unapproved oil can lead to seal
deterioration and leaks. A leak can ultimately cause loss of fluid, which can result in a loss of
power steering assist.
1. Remove the fuel pump fuse from the battery junction box.
2. Disconnect the power steering return hose. Plug the reservoir.
3. Attach an extension hose between the power steering return hose and an empty container.
4. Raise the front wheels off the floor. For additional information, refer to Section 100 - 02 .
5. Check the fluid level. If necessary, fill the reservoir to the correct level. zUse Motorcraft MERCON® Multi-Purpose ATF XT -2-QDX or MERCON® equivalent.
6. CAUTION: Do not crank the engine for more than 15 seconds at a time. Allow the
starter to cool for 1 minute before cranking again. Premature starter failure can occur.
CAUTION: Do not hold the steering wheel against the stops for more than three to
five seconds at a time. Damage to the power steering pump could occur.
Turn the steering wheel from stop- to-stop while cranking the engine until the fluid exiting the
power steering return hose is clear of all contamination and foreign material.
zAdd Motorcraft MERCON® Multi-Purpose ATF XT -2-QDX or MERCON® equivalent as
needed.
7. Lower the vehicle.
8. Disconnect the extension hose from the power steering return hose. Remove the plug. Attach the power steering return hose to the reservoir.
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GENERAL PROCEDURES
Fill
1. WARNING: Do not mix oil types, any mixture or any unapproved oil can lead to seal
deterioration and leaks. A leak can ultimately cause loss of fluid, which can result in a
loss of power steering assist.
Check the fluid level. If necessary, fill the reservoir to the correct level.
zUse Motorcraft MERCON® Multi-Purpose ATF XT -2-QDX or MERCON® equivalent.
2. Remove the fuel pump fuse from the battery junction box.
3. Raise the front wheels off the floor. For additional information, refer to Section 100 - 02 .
4. CAUTION: Do not crank the engine for more than 15 seconds at a time. Allow the
starter to cool for 1 minute before cranking again. Premature starter failure can occur.
CAUTION: Do not hold the steering wheel against the stops for more than three to
five seconds at a time. Damage to the power steering pump will occur.
Turn the steering wheel from stop- to-stop while cranking the engine.
5. Lower the vehicle.
6. CAUTION: Do not overfill the reservoir.
Check the fluid level. If necessary, fill the reservoir to the correct level. zUse Motorcraft MERCON® Multi-Purpose ATF XT -2-QDX or MERCON® equivalent.
7. Install the fuel pump fuse.
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z
check the connections to the vehicle.
z check the ignition switch position.
4. If the scan tool still does not communicate with the vehicle, refer to the scan tool manual.
5. Carry out the DATA LINK DIAGNOSTIC TEST. If the scan tool responds with: zCKT914, CKT915 or CKT70 =ALL ECUS NO RESP/NOT EQUIP, refer to Section 418 -
00 .
z NO RESP/NOT EQUIP for GEM, go to Pinpoint Test A.
z SYSTEM PASSED, retrieve and record the continuous diagnostic trouble codes (DTCs),
erase the continuous DTCs and carry out self- test diagnostics for the GEM.
6. If the DTCs retrieved are related to the concern, go to the GEM Diagnostic Trouble Code (DTC) Index to continue diagnostics.
7. If no DTCs related to the concern are retrieved, proceed to the Symptom Chart to continue diagnostics.
GEM Diagnostic Trouble Code (DTC) Index GEM Diagnostic Trouble Code (DTC) Index DTC Description Source Action
B1217 Horn Relay Coil Circuit Failure GEM REFER to
Section 413 - 06 .
B1218 Horn Relay Coil Circuit Short to
Vbatt GEM REFER to
Section 413 - 06 .
B1312 Lamp Headlamp Input Circuit
Short to Battery GEM REFER to
Section 417 - 01 .
B1317 Battery Voltage High GEM REFER to
Section 414 - 00 .
B1318 Battery Voltage Low GEM REFER to
Section 414 - 00 .
B1322 Driver Door Ajar Circuit Short to
Ground GEM REFER to
Section 417 - 02 .
B1330 Passenger Door Ajar Circuit
Short to Ground GEM REFER to
Section 417 - 02 .
B1334 Decklid Ajar Rear Door Circuit
Short to Ground GEM REFER to
Section 417 - 02 .
B1339 Chime Input Request Circuit
Short to Battery GEM REFER to
Section 413 - 09 .
B1340 Chime Input Request Circuit
Short to Ground GEM REFER to
Section 413 - 09 .
B1342 ECU Is Defective GEM CLEAR the DTC. Retrieve the DTCs. If DTC
B1342 is retrieved, INSTALL a new GEM. REFER to Section 419 - 10 .
B1353 Ignition Key-
In Circuit Open GEM REFER to
Section 413 - 09 .
B1359 Ignition Run/Acc Circuit Failure GEM GO to
Pinpoint Test E .
B1396 Power Door Lock Circuit Short
to Battery GEM REFER to
Section 501 - 14B .
B1397 Power Door Unlock Circuit
Short to Battery GEM REFER to
Section 501 - 14B . Klj . 2 ba
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z
intake manifold gaskets
z cylinder head gaskets
z oil bypass filter
z oil filter adapter
z engine front cover
z oil filter adapter and filter body
z oil level indicator tube connection
z oil pressure sensor
Leakage Points— Under Engine—With Vehicle on Hoist
z oil pan gaskets (6710)
z oil pan sealer
z oil pan rear seal (6723)
z engine front cover gasket
z crankshaft front seal (6700)
z crankshaft rear oil seal (6701)
z crankshaft main bearing cap side bolts
z oil filter adapter and filter body
z oil cooler, if equipped
Leakage Points— With Transmission and Flywheel Removed
z crankshaft rear oil seal
z rear main bearing cap parting line
z rear main bearing cap and seals
z flywheel mounting bolt holes (with flywheel [6375] installed)
z camshaft rear bearing covers (6266) or pipe plugs at the end of oil passages
Oil leaks at crimped seams in sheet metal parts and cracks in cast or stamped parts can be detected
when using the dye method.
Compression Test— Compression Gauge Check
1. Make sure the oil in the crankcase is of the correct viscosity and at the correct level and that the battery (10655) is correctly charged. Operate the vehicle until the engine is at normal operating
temperature. Turn the ignition switch to the OFF position, then remove all the spark plugs
(12405).
2. Set the throttle plates in the wide- open position.
3. Install a compression gauge such as the Compression Tester in the No. 1 cylinder.
4. Install an auxiliary starter switch in the starting circuit. With the ignition switch in the OFF position, and using the auxiliary starter switch, crank the engine a minimum of five compression
strokes and record the highest reading. Note the approximate number of compression strokes Klj . 7 ba
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required to obtain the highest reading.
5. Repeat the test on each cylinder, cranking the engine approximately the same number of compression strokes.
Compression Test— Test Results
The indicated compression pressures are considered within specification if the lowest reading cylinder
is at least 75 percent of the highest reading. Refer to the Compression Pressure Limit Chart.
If one or more cylinders reads low, squirt approximately one tablespoon of engine oil on top of the
pistons in the low- reading cylinders. Repeat the compression pressure check on these cylinders. Compression Test — Interpreting Compression Readings Compression Pressure Limit Chart
Maximum
Pressure Minimum
Pressure Maximum
Pressure Minimum
Pressure Maximum
Pressure Minimum
Pressure Maximum
Pressure Minimum
Pressure 924 kPa
(134 psi) 696 kPa
(101 psi) 1131 kPa
(164 psi) 848 kPa
(123 psi) 1338 kPa
(194 psi) 1000 kPa
(146 psi) 1544 kPa
(224 psi) 1158 kPa
(168 psi) 938 kPa
(136 psi) 703 kPa
(102 psi) 1145 kPa
(166 psi) 855 kPa
(124 psi) 1351 kPa
(196 psi) 1014 kPa
(147 psi) 1558 kPa
(226 psi) 1165 kPa
(169 psi) 952 kPa
(138 psi) 717 kPa
(104 psi) 1158 kPa
(168 psi) 869 kPa
(126 psi) 1365 kPa
(198 psi) 1020 kPa
(148 psi) 1572 kPa
(228 psi) 1179 kPa
(171 psi) 965 kPa
(140 psi) 724 kPa
(106 psi) 1172 kPa
(170 psi) 876 kPa
(127 psi) 1379 kPa
(200 psi) 1034 kPa
(150 psi) 1586 kPa
(230 psi) 1186 kPa
(172 psi) 979 kPa
(142 psi) 738 kPa
(107 psi) 1186 kPa
(172 psi) 889 kPa
(129 psi) 1303 kPa
(202 psi) 1041 kPa
(151 psi) 1600 kPa
(232 psi) 1200 kPa
(174 psi) 933 kPa
(144 psi) 745 kPa
(109 psi) 1200 kPa
(174 psi) 903 kPa
(131 psi) 1407 kPa
(204 psi) 1055 kPa
(153 psi) 1055 kPa
(153 psi) 1207 kPa
(175 psi) 1007 kPa
(146 psi) 758 kPa
(110 psi) 1214 kPa
(176 psi) 910 kPa
(132 psi) 1420 kPa
(206 psi) 1062 kPa
(154 psi) 1627 kPa
(154 psi) 1220 kPa
(177 psi) 1020 kPa
(148 psi) 765 kPa
(111 psi) 1227 kPa
(178 psi) 917 kPa
(133 psi) 1434 kPa
(208 psi) 1075 kPa
(156 psi) 1641 kPa
(238 psi) 1227 kPa
(178 psi) 1034 kPa
(150 psi) 779 kPa
(113 psi) 1241 kPa
(180 psi) 931 kPa
(135 psi) 1448 kPa
(210 psi) 1083 kPa
(157 psi) 1655 kPa
(240 psi) 1241 kPa
(180 psi) 1048 kPa
(152 psi) 786 kPa
(114 psi) 1255 kPa
(182 psi) 936 kPa
(136 psi) 1462 kPa
(212 psi) 1089 kPa
(158 psi) 1669 kPa
(242 psi) 1248 kPa
(181 psi) 1062 kPa
(154 psi) 793 kPa
(115 psi) 1269 kPa
(184 psi) 952 kPa
(138 psi) 1476 kPa
(214 psi) 1103 kPa
(160 psi) 1682 kPa
(244 psi) 1262 kPa
(183 psi) 1076 kPa
(156 psi) 807 kPa
(117 psi) 1282 kPa
(186 psi) 965 kPa
(140 psi) 1489 kPa
(216 psi) 1117 kPa
(162 psi) 1696 kPa
(246 psi) 1269 kPa
(184 psi) 1089 kPa
(158 psi) 814 kPa
(118 psi) 1296 kPa
(188 psi) 972 kPa
(141 psi) 1503 kPa
(218 psi) 1124 kPa
(163 psi) 1710 kPa
(248 psi) 1202 kPa
(186 psi) 1103 kPa
(160 psi) 827 kPa
(120 psi) 1310 kPa
(190 psi) 979 kPa
(142 psi) 1517 kPa
(220 psi) 1138 kPa
(165 psi) 1724 kPa
(250 psi) 1289 kPa
(187 psi) 1110 kPa
(161 psi) 834 kPa
(121 psi) 1324 kPa
(192 psi) 993 kPa
(144 psi) 1631 kPa
(222 psi) 1145 kPa
(166 psi) — —Klj . 8 ba
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1. If compression improves considerably, piston rings are faulty.
2. If compression does not improve, valves are sticking or seating incorrectly.
3. If two adjacent cylinders indicate low compression pressures and squirting oil on each piston
does not increase compression, the head gasket may be leaking between cylinders. Engine oil
or coolant in cylinders could result from this condition.
Use the Compression Pressure Limit Chart when checking cylinder compression so that the
lowest reading is within 75 percent of the highest reading.
Cylinder Leakage Detection
When a cylinder produces a low reading, use of the Engine Cylinder Leak Detection/Air Pressurization
Kit will be helpful in pinpointing the exact cause.
The leakage detector is inserted in the spark plug hole, the piston is brought up to dead center on the
compression stroke, and compressed air is admitted.
Once the combustion chamber is pressurized, a special gauge included in the kit will read the
percentage of leakage. Leakage exceeding 20 percent is excessive.
While the air pressure is retained in the cylinder, listen for the hiss of escaping air. A leak at the intake
valve (6507) will be heard in the throttle body (9E926). A leak at the exhaust valve (6505) can be
heard at the tail pipe. Leakage past the piston rings will be audible at the positive crankcase ventilation
(PCV) connection. If air is passing through a blown head gasket to an adjacent cylinder, the noise will
be evident at the spark plug hole of the cylinder into which the air is leaking. Cracks in the cylinder
block or gasket leakage into the cooling system may be detected by a stream of bubbles in the radiator
(8005).
Oil Consumption Test
The following diagnostic procedure is used to determine the source of excessive internal oil
consumption. 1. NOTE: Oil use is normally greater during the first 16,100 km (10,000 miles) of service. As
mileage increases, oil use generally decreases. Vehicles in normal service should get at least
1,450 km per liter (900 miles per quart) after 16,000 km (10,000 miles) of service. High speed
driving, towing, high ambient temperature and other factors may result in greater oil use.
Define excessive oil consumption, such as the number of miles driven per liter (quart) of oil
used. Also determine customer's driving habits, such as sustained high speed operation,
towing, extended idle and other considerations.
2. Verify that the engine has no external oil leak as described under Engine Oil Leaks in the Diagnosis and Testing portion of this section.
3. Verify that the engine has the correct oil level dipstick (6750).
4. Verify that the engine is not being run in an overfilled condition. Check the oil level at least five minutes after a hot shutdown with the vehicle parked on a level surface. In no case should the
level be above MAX or the letter F in FULL. If significantly overfilled, carry out Steps 6a through
6d.
5. Verify the spark plugs are not oil saturated. If the spark plugs are oil saturated and compression is good it can be assumed the valve seals or valve guides are at fault. Klj . 9 ba
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