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Torque Cconverter Lockup Speed Question

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Old Mar 19, 2010 | 07:18 AM
  #1  
LTCPipkin's Avatar
LTCPipkin
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Torque Cconverter Lockup Speed Question

My 2005 Explorer TC locks at speeds much lower than both my 1994s. The '94s locks between 53-55mph. The '05 will lock as low as 42mph. I drive all of them with a VERY light foot...trying to squeeze out as much mpg as possible with city driving. Is this normal for the '05 TC to lock at such a low speed?\

Michael
2005 4L XLT
1994 4L Limited
1994 4L XLT
 
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Old Mar 19, 2010 | 11:16 AM
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aquanaut20
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From: BC Canada
My 97, locks up between 40-45
 
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Old Mar 19, 2010 | 11:32 AM
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My '94 locks up as soon as it can, I can be in OD with lockup as low as 40 mph.

Of course it is normal for the TC to lock as soon as possible. If you want maximum fuel economy you want TC lockup.
 
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Old Mar 19, 2010 | 12:42 PM
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I've seen some that will lockup as low as a constant 35 mph, something like 5 seconds or longer at no less than 35 mph will allow the TC to lockup. I want to say that was on my 1998 SHO.

-Rod
 
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