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Home >> Ford >> 2002 >> Taurus SES, 3.0 S >> Repair and Diagnosis >> External Pages >> Different car >> Section 979 (Noise, Vibration & Harshness) >> Diagnosis And Testing >> Noise, Vibration And Harshness (NVH) >> Symptom Charts >> Symptom Chart-Transmission (Automatic) Noise/Vibration

Symptom Chart-Transmission (Automatic) Noise/Vibration

WARNING: This page is about a different car, the 2003 Mercury Sable and 2003 Ford Taurus. However, it is still accessible from the selected car via links, so may be relevant.
SYMPTOM CHARTS

Condition Possible Sources Action
  • Rattle-occurs at idle or at light acceleration from a stop
  • Damaged engine or transmission mounts.
  • CHECK the powertrain/drivetrain mounts for damage. REFER to Section 303-01A for 3.0L (2V) engines or Section 303-01B for 3.0L (4V) engines.
  • A loose front exhaust pipe heat shield.
  • REPAIR or INSTALL a new heat shield as necessary.
  • Loose inspection plate or dust cover plate.
  • CHECK for loose bolts. TIGHTEN to specifications. REFER to Section 307-01B .
  • Loose flexplate to converter nuts.
  • CHECK for loose nuts. TIGHTEN to specifications. REFER to Section 307-01B .
  • Whine-pitch increases with vehicle speed. Starts in first and second gear, decreases or goes away at higher gears
  • Damaged or worn low one-way clutch.
  • Damaged or worn intermediate one-way clutch.
  • Friction elements.
  • Damaged or worn planetary or sun gear.
  • INSPECT the transmission for wear or damage. REPAIR or INSTALL new components as necessary. REFER to Section 307-01B .
  • Whine-the pitch changes with engine speed
  • A worn or damaged component.
  • CARRY OUT the Engine Accessory Test. REPAIR or INSTALL new accessory drive components as necessary.
  • Incorrect fluid level.
  • CHECK that the transmission is filled to the correct level. ADD fluid as necessary. REFER to Section 307-01B.
  • Partially blocked filter.
  • INSPECT the filter. CLEAN or INSTALL a new filter as necessary. REFER to Section 307-01B.
  • Worn or damaged torque converter.
  • CARRY OUT the torque converter service and replacement check. REFER to Section 307-01B .
  • Worn or damaged front pump.
  • INSPECT the front pump. INSTALL a new front pump as necessary. REFER to Section 307-01B .
  • Whine-pitch changes with vehicle speed
  • Speedometer cable or gears.
  • REPAIR or INSTALL new cables or gears as necessary.
  • Whine/moan type noise-pitch increases or changes with vehicle speed
  • Damaged engine or transmission mount.
  • CHECK the powertrain/drivetrain mounts for damage. REFER to Section 303-01A for 3.0L (2V) engines or Section 303-01B for 3.0L (4V) engines.
  • U-joints worn or damaged.
  • INSPECT the U-joints for wear or damage. INSTALL new U-joints as necessary.
  • Damaged or worn differential ring and pinion.
  • INSPECT the differential ring and pinion for damage. CARRY OUT the Checking Tooth Contact Pattern and Condition of the Ring and Pinion component test in this section. REPAIR or INSTALL a new differential ring and pinion as necessary.
  • Planetary gears nicked or chipped.
  • CHECK the planetary gears for damage. INSTALL new components as necessary. REFER to Section 307-01B .
  • Whistle-noise is high pitched, constant. Changes in pitch with throttle position
  • Hydraulic pressure in the main control.
  • INSPECT the main control. REPAIR or INSTALL new components as necessary. REFER to Section 307-01B .
  • Incorrect band/clutch apply pressure.
  • CARRY OUT the line pressure tests. REPAIR or INSTALL components as necessary. REFER to Section 307-01B .
  • Worn or damaged torque converter.
  • CARRY OUT the torque converter service and replacement check. REFER to Section 307-01B .
  • Clunk-occurs when shifting from PARK to a drive or reverse position
  • Damaged powertrain mounts.
  • Damaged or worn pinion bearings.
  • Worn or galled driveshaft slip yoke splines.
  • CLEAN and INSPECT the splines of the yoke. INSTALL a new slip yoke as necessary.
  • Worn friction elements or excessive clutch pack end plate play.
  • INSPECT the transmission for wear. CHECK that all end play and clearances are within specification. REPAIR or INSTALL new components as necessary. REFER to AUTOMATIC TRANSAXLE/TRANSMISSION-4F50N .
  • Bump-occurs when shifting from PARK to a drive or reverse position. Similar to Clunk but with no sound
  • Initial gear engagement.
  • Acceptable condition.
  • Buzz or hiss
  • Incorrect driveline angles.
  • CHECK for correct driveline angles. REFER to REPAIR as necessary.
  • Worn or damaged main control solenoids or valves.
  • Vibration-a high frequency (20-80 Hz) that is felt through the seat or gear shifter. Changes with engine speed
  • Transmission cooler lines grounded out.
  • CHECK the transmission cooler lines. REPAIR as necessary.
  • Flexplate to torque converter nuts loose.
  • Fluid filler tube grounded out.
  • CHECK the fluid filler tube. REPAIR as necessary.
  • Shift cable incorrectly routed, grounded out or loose.
  • CHECK the shift cable. REPAIR as necessary. Section 307-05 .
  • Shutter or chatter-occurs with light to medium acceleration from low speeds or a stop
  • Electrical inputs/outputs.
  • Vehicle wiring harness.
  • Incorrect inputs/outputs from the powertrain control module (PCM), digital transmission range (TR) sensor, brake pedal position (BPP) sensor, throttle position (TP) sensor, transmission speed sensor (TSS), output speed shaft (OSS) sensor or the torque converter clutch (TCC).
  • CARRY OUT a Torque Converter Clutch Operation Test. RUN on-board diagnostics or self-test. REFER to AUTOMATIC TRANSAXLE/TRANSMISSION-4F50N . CLEAR the DTC's, road test and rerun on-board diagnostics or self-test.
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