Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2005TAURUS SEL, 4D SEDANREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 345 (AUTOMATIC TRANSMISSION - CD4E)DIAGNOSIS AND TESTINGSPECIAL TESTING PROCEDURESLINE PRESSURE TESTNOTES
2005 Ford Taurus SEL, 4D Sedan
Line Pressure Test: Notes
2005 Ford Taurus SEL, 4D SedanSECTION Notes
WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
- Carry out Line Pressure Test before carrying out Stall Speed Test. If line pressure is low at stall, do not carry out stall test or further transaxle damage can occur. Do not maintain WOT in any gear range for more than 5 seconds.
- The Transmission Tester must be removed from the transaxle and the vehicle harness connected to verify these pressures.
The Line Pressure Test verifies that the line pressure is within specifications.
- Connect pressure gauge to line pressure tap.
- Start engine and check line pressures. Refer to following the LINE PRESSURE TABLE to determine if line pressure is within specifications.
- If line pressure is not within specifications, carry out on-board diagnostics and pinpoint test, air pressure check and repair main control system or pump as required.LINE PRESSURE TABLE (2.3L AND 3.0L)
Gear Line Pressure at Idle Line Pressure at Stall kPa psi kPa psi P/N 441-524 64-76 - - R 441-524 64-76 1786-2027 259-294 D 324-372 47-54 1158-1269 168-184 2 324-372 47-54 1158-1269 168-184 1 324-372 47-54 1158-1269 168-184
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.