2000 ford excursion. OD light blinks, shifts hard, idles rough, kills some times. Turn off, restart and it clears until stop at red light or go in reverse then light blinks again. Changed both sensors on transmission and one on differential. Code says out put speed sensor but all has been changed.... Help!!

Bad Sleeves - Ford Servo Bore Transmission Fix Solution

www.fordservoboretransmissionfixsolution.com/blog/bad-sleeves

Original owner let it run low on fluid because of leak. ... The worn bores will cause slipping, hard shifts, and high revs between shifts from those gears. ..... Andy I bought a 02 mercury mountaineer v6 4.0 the the O/D flashes and service light is on ... Get on a flat surface at highway speeds and manually turn the OD of and on.

"O/D off" light blinking on dash? please help anyone? - Discussion ...

www.topix.com > Ford Explorer

Aug 24, 2009 - i have a problem with my 2002 ford explorer sport trac OD blinking... it will turn of if i .... That wire led down to the transmission speed sensor. ... the O/D off light started flashing and its revving really high before it will change ... 2004 Jeep liberty problems
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sounds like a bad iac valve. idle air control, dirty throttle body, and relearn the idle after repairs.

You have Solenoid or Internal Trans issue

I would stop using it & have it diagnosed

You not going to have all the gears avail,
as is, with the OD Light on,that is hard on the
motor & trans

Please include engine and mileage to help with answers. There is a sensor in the tube connecting the air box to the throttle body. Map, mass air flow sensor. It is delicate and pricey. The auto parts has a aerosol can of cleaner for about 8$ designed to clean this part. Carefully remove it from the tube housing and spray it off with the cleaner. This cleaner will attack the plentum and tube melting it causing air leaks if you use it in the tube. On a 3800 If you have coolant leaks or seeping check the plenum it may need to be replaced if it has not already been. They have a new style that is reinforced. This should smooth out the idle and clear up stalling if it's dirty. Air leaks can also cause an unstable idle and stalling at stop signs. Anti freeze can turn corrosive and should be changed. I change mine about every 3 or 4 years. Make sure if your engine contains aluminum parts ( block or heads) that you use the correct antifreeze when refilling or adding to existing levels. Green or orange. Read the label to make shure the product is correct for your car.

Hi Seth, Check out your engine and gear box mountings! Regards John

HAVE VECHICLE SCANNED SOUND LIKE TORQUE PROBLEMS. OR VECHICLE SPEED SENSOR. CHECK TRANSMISSION FLUID LEVEL.I WOULD DO A TRANSMISSION FLUID AND FILTER CHANGE FIRST IT NOT BEEN CHANGED A LONG LONG TIME. BEFORE GETTING DEEPER INTO MAJOR TRANSMISSION REPAIR.ANOTHER THING MAKE SURE ENGINE WELL FINE TUNED IF NOT IT WILL CAUSE TRANSMISSION SHIFT PROBLEMS. LIKE I WAS SAYING IF TRANSMISSION FILTER STOPPED UP IT CAUSE LOW TRANSMISSION FLUID PRESSURE CAUSING LOTS TRANSMISSION SHIFTING PROBLEMS

Try cleaning the butterfly valve in the air intake. Use carburetor cleaner and a clean rag.

This is likely your electronic speed sensor. On my 2003 F150 it would rev quite high before finally shifting into 2nd. and my O.D light would blink also. The speed sensor is located under the vehicle about halfway back on the frame on the passenger side. The part costs about $70 and is a fairly easy repair.

sounds like a large vacuum hose was knocked off the engine when they pulled the trans out, have that checked.

The blinking overdrive button is telling u that a serious fault has occurred in the electronic controls or a mechanical fault such as excess slippage is occurring.