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Ford says to flush the transmission through completely with Mercon V fluid. In other words, replace every drop of Mercon III fluid tha it came with, for Mercon V. You cannot get away with just dropping the pan and doing a service. That only removes about 6 quarts of fluid. That transmission holds about 15 quarts, so you have to use a flush machine to run it through. After you exchange all the fuid out for Mercon V, then it will take about 500 miles for the shudder to improve. And then Ford charges you $350 for a fluid change that doesn't help and just might destroy the tranny in a car that age. Ford has a bulletin on this, your torque converter is going out and it will only get worse. Just add some GM 'Limited Slip Additive' to your tranny, will work wonders. There are some transmission specific additives out there too, just haven't tried them myself. -motoman22

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โˆ™ 2006-12-27 21:44:09
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Q: How to fix shudder from torque converter in 1993 Crown Victoria?
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