2001 Ford E-150 Transmission Knock

2001 FORD F-150
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CARPET CLEANER
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  • 1 POST
Passanger van, 4.6L with 104,000 miles Between 30 and 45 mph it will jump a bit. Best decribed as the feeling when the engin is knocking but the sound is not as loud. Had two garages check the motor and it runs fine. Aftre service it went away for awhile then returned. They said it is the trans because of the speed. Suggested a cleaning service that attach hose to filler tube to pull and replace fluid.
Can I just add a can of motor flush cleaner, drive for a few miles then change filter and oil?
How do I empty the tourq converter or will it just drain with the pan off?
Nov 21, 2006 at 12:10 AM
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BLACKOP555
  • ✓Experienced Mechanic
  • 10,386 POSTS
DO NOT RUN THE CAR WITH ENGINE CLEANER IN THE TRANNY. take it off and clean it by hand with a brush or compressed air. To drain the torque converter just slide it off of the shaft and tip it upside down, watch out its heavy.
Jan 5, 2008 at 12:18 PM

Suggested Repair

Do not run the vehicle with engine cleaner in the transmission. Remove the pan and clean it by hand with a brush or compressed air. Drain the torque converter by sliding it off the shaft and carefully tipping it upside down; it is heavy.

Conversation Summary

The owner of a 2001 Ford E-150 van with a 4.6L engine and about 104,000 miles reported a jump or knock-like sensation between 30 and 45 mph. Shops found the engine running fine and suspected the transmission, suggesting a fluid exchange. The owner asked whether motor flush could be added before a filter and fluid change and how to empty the torque converter. The expert said not to run engine cleaner in the transmission, to clean the pan by hand, and to drain the converter by removing it from the shaft and tipping it over.

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