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 262 (AUTOMATIC TRANSMISSION)DIAGNOSIS AND TESTINGSHIFT POINT ROAD TESTNOTES
2005 Ford Taurus SEL, 4D Sedan
Shift Point Road Test: Notes
2005 Ford Taurus SEL, 4D SedanSECTION Notes
WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
This test verifies that the shift control system is operating correctly.
- Bring engine and transmission up to normal operating temperature.
- Operate vehicle with transmission range selector lever in (D) position.
- Apply minimum throttle and observe speeds at which upshift occurs and torque converter engages; refer to the SHIFT SPEED SPECIFICATION CHART .
- With the transmission in OVERDRIVE (4th gear), press the transmission control switch. The transmission should downshift to 3rd gear. Release the accelerator pedal; engine braking should occur.
- Press accelerator pedal to floor, wide open throttle (WOT). Transmission should shift from 3rd to 2nd gear, or 3rd to 1st, depending on vehicle speed. Torque converter clutch should disengage and then reapply.
- With the transmission in (D) position and speed above 80 km/h (50 mph) and less than half throttle, move the transmission range selector lever from (D) position to manual 2 position and remove pressure from the accelerator pedal. Transmission should immediately downshift into 2nd gear. With vehicle remaining in manual 2 position, move the transmission range selector lever into manual 1 position, and release accelerator pedal. Transmission should downshift into 1st gear at speeds approximately below 45-56 km/h (28-35 mph).
- If transmission fails to upshift/downshift or torque converter clutch does not apply and release, refer to DIAGNOSIS BY SYMPTOM .
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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.