Question about 2002 Ford Expedition
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
SOURCE: 99 f250 SD 7.3
Your speed sensor in your trans. needs to be checked out sounds like its not working or not getting a good signal until its generating enough power and speed to start until it reaches 30 MPH. Check that out sometimes it could just be some dirt on it. It all makes sense the ABS light is on because its not reading the speed of the tires, and the AOD light is on because It has no idea when to shift into overdrive without knowing how fast its going. I sure Hope that Helps You Out, And Thanks, Bear001
Posted on Jun 17, 2008
SOURCE: overdrive lockup
On the passenger side of the trans there are two servos.A servo is a steel piston with rubber lip seals bonded to the steel.The servo piston strokes in or out,applying or releasing a band.There are two servos,each hidden behind circular aluminum covers held into the case with snap rings.The rear servo actuates the 2nd gear band,and the front servo actuates the 4th gear,or O.D. band.The rubber lip seals on the servo pistons are soft and pliable when new,but with hot and cold cycles,and years of use,the rubber hardens and doesnt seal very well,causing loss of gears.It is very possible the servo has hardened,and that's why you are losing 4th.The other possible cause is electronic.This trans,the A4LD has 2 electrical solenoids inside the trans,4th gear solenoid and lockup solenoid.These are the ONLY electronics inside the trans,another possible problem area.I would remove the servos first for inspection,but before removal,take a scribe and scratch into the aluminum covers,"F" on the front one,and "R" on the rear one.These servos are different diameters,and MUST go back where they came out of.On the servo covers you will see cast into the covers 2 letters identifying the servo it requires....AB.....BB.....ZC...etc.These are examples,and yours will likely be AB and BB.If you DIY....use plenty of vaseline on the rubber lip seals,and the servo bores, to prevent cutting the new servo seals and O rings.Good luck.
Posted on Sep 09, 2008
you can disconnect the main connector on drivers side top of trans it might help, but really needs to be diagnosed, and repaired, probably a faulty tcc solenoid..
Posted on Nov 29, 2009
Tips for a great answer:
Jul 28, 2015 | Cars & Trucks
Sep 08, 2014 | 2006 Ford Expedition
Feb 16, 2012 | 1997 GMC Sonoma
Jan 25, 2011 | 2002 Ford Explorer
Jun 27, 2010 | 2003 Ford F150 Regular Cab
Jan 19, 2010 | 2002 Ford F150 Regular Cab
Dec 05, 2009 | 2001 Ford Expedition
Sep 09, 2009 | 2002 Ford F150 Regular Cab
Dec 21, 2008 | 1998 Ford Expedition
Nov 12, 2008 | 2002 Ford Explorer
550 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: