Symptoms
Code 628
Delayed lockup
No lockup
Shudder
TCC apply & release complaints
Cause
Too much oil to the bypass control valve plunger, or wear at the control sleeve.
Correction
The smaller orifice in the Sonnax sleeve allows TCC oil to stroke the bypass valve more quickly. The improved plunger and sleeve replace worn components that are leaking converter charge oil to exhaust.
Trans. code AOD-E
FORD CROWN VICTORIA 1992-2011
FORD E-150 1994-2013
FORD E-250 1997-2013
FORD E-350 1997-2013
FORD E-450 2000-2011
FORD ECONOLINE SUPER DUTY 1997-1999
FORD EXPEDITION 1997-2006
FORD EXPLORER 1996-2001
FORD EXPLORER SPORT 2001
FORD F-150 1994-2010
FORD F-150 HERITAGE 2004
FORD F-250 1997-1999
FORD MUSTANG 1994-2004
FORD THUNDERBIRD 1994-1997
