Symptom Chart: Transaxle - Transmission Cooling
Diagnostics in this service information assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to
DIAGNOSTIC METHODS
for information regarding Ford-specific diagnostic practices.
SYMPTOM CHART
| Condition |
Possible Sources |
Actions |
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- Clogged transmission fluid cooler or transmission fluid cooler tubes
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- INSPECT the transmission fluid cooler, transmission fluid cooler tubes and transmission fluid thermal bypass valve for damage or plugging. INSTALL new components as necessary. REFER to Transmission Fluid Cooler Tubes - 3.5L Ti-VCT .
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- Bent or crushed transmission fluid cooler tubes
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- INSPECT the transmission fluid cooler, transmission fluid cooler tubes and transmission fluid thermal bypass valve for damage or plugging. INSTALL new components as necessary. REFER to Transmission Fluid Cooler Tubes - 3.5L Ti-VCT .
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- Transmission fluid thermal bypass valve stuck closed
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- Check the transmission fluid cooler tubes and fittings between the transmission and the transmission fluid cooler. If a leak cannot be stopped by tightening the transmission fluid cooler tube nut, install new parts. When Motorcraft® MERCON® LV Automatic Transmission Fluid is found leaking between the case and the transmission fluid cooler line fitting, check for missing or damaged O-ring, then tighten the fitting to specification.
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- Vibration - a high frequency (20-80 Hz) that is felt through the seat or gear shifter and changes with engine speed.
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- Transmission fluid cooler tubes grounded
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