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SportTrac Discussion
Suspension
Vibration & shuddering from back wheels when turning from a stop.
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<blockquote data-quote="Yardsale " data-source="post: 1015195" data-attributes="member: 58988"><p>Sometimes, it is less expensive to take it to a shop than to experiment with parts replacement.</p><p></p><p></p><p></p><p>Have the tires been inspected for defect (belt slippage) or damage? Have they been rotated since this began?</p><p></p><p></p><p></p><p>Seems that it is heat related. Could be bearings, either axle or differential, or u-joints.</p><p></p><p></p><p></p><p>Does it have a limited slip differential?</p><p></p><p></p><p></p><p>If the fluid is low, then adding fluid might fix it (this is where having the problem correctly diagnosed can be efficient). There is a fluid fill hole in the front right (driver) side of the differential that can be used to check fluid level and fill (fill until level with the bottom of the hole - ensure truck is on level ground). If it is low, where did the fluid go? There may be a leak and that needs to be fixed <em>and</em> there may be damage that occurred.</p><p></p><p></p><p></p><p>As a side note, while the maintenance schedule does not mention differential fluid change, many would agree that it should be changed every 50,000 miles as a maintenance item, transmission fluid, too (some argue about the frequency, but all agree about the maintenance). Transmission fluid level should be checked every 15,000 miles.</p><p></p><p></p><p></p><p>Might want to change the fluid if it hasn't been. If it is a limited slip, a "friction modifier" must be added to the fluid. I would not trust a "quickie lube" to perform this service.</p><p></p><p></p><p></p><p>P.S. When checking the transmission fluid, the transmission must be warm (operating temperature).</p></blockquote><p></p>
[QUOTE="Yardsale , post: 1015195, member: 58988"] Sometimes, it is less expensive to take it to a shop than to experiment with parts replacement. Have the tires been inspected for defect (belt slippage) or damage? Have they been rotated since this began? Seems that it is heat related. Could be bearings, either axle or differential, or u-joints. Does it have a limited slip differential? If the fluid is low, then adding fluid might fix it (this is where having the problem correctly diagnosed can be efficient). There is a fluid fill hole in the front right (driver) side of the differential that can be used to check fluid level and fill (fill until level with the bottom of the hole - ensure truck is on level ground). If it is low, where did the fluid go? There may be a leak and that needs to be fixed [i]and[/i] there may be damage that occurred. As a side note, while the maintenance schedule does not mention differential fluid change, many would agree that it should be changed every 50,000 miles as a maintenance item, transmission fluid, too (some argue about the frequency, but all agree about the maintenance). Transmission fluid level should be checked every 15,000 miles. Might want to change the fluid if it hasn't been. If it is a limited slip, a "friction modifier" must be added to the fluid. I would not trust a "quickie lube" to perform this service. P.S. When checking the transmission fluid, the transmission must be warm (operating temperature). [/QUOTE]
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SportTrac Discussion
Suspension
Vibration & shuddering from back wheels when turning from a stop.
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