Won't shift into overdrive

91 Ranger - No OverDrive - Ford Truck Enthusiasts Forums

www.ford-trucks.com > ... > Small Chassis Trucks > Ranger & B-Series
Nov 18, 2006 - 91 Ranger - No OverDrive Ranger & B-Series. ... 1991 RangerAutomatic 3.0L 186,000 miles. Today the overdrive didn't work on my truck. ...However, if it is not a solenoid on vacation, you have probable failure coming down ... 2000 Explorer 5r55e transmission issues, drive and reverse.
Feb 5, 2013
A4LD - 4R44E and 4R55E
Oct 19, 2011
Transmission Bang Shifting - Overdrive Off Light Flashes
Jul 21, 2008
91 explorer trans porblem/ no overdrive
Nov 17, 2007
More results from www.ford-trucks.com

Overdrive is engaged with a torque convert clutch lockup. ATF travels through the splined shaft on the transmission to the torque converter. Check the seals on the converter and the trans.

could be or it could be a problem with the vacuum hose to the actuator that you would have had to disconnect for the removal of the box

when you step on the gas to the floor the trans is not trying to shift into overdrive, over drive connects as you are at a steady speed which lowers rpm and increase fuel mpg. when you step on the gas hard you are telling the trans to down shift to a passing gear,which calls for more fuel and air which is what you are not getting. A few things could cause this, bad crank sensor,ecm, fuel pump, fuel filter,knock sensor etc. I would get a full blown diagnostic done which will check fuel press,timing,sensors,codes,etc normally around $100.00 . But have this done at a very reputable shop and be there when they do it so they can explain everything to you, and make sure you understand things before somebody starts saying well it could be this and now i think its this or that.

im not sure about the fan Try spraying the heck out of the entire assembly on the drivers side of the tranny with PB Blaster and as for hard shifts is it manual or auto? if auto change filter

check overdrive or shift fuses. look in owners manual for location

I have a 91 ranger. There are two band adjustments on the transmission that is supposed to be adjusted every 60K miles. There are two adjustments, one for overdrive and the other for everything else. The overdrive adjustment is closest to the front of the transmission and the other is back behind it closer to the shift lever on the driver side. The locking nut is a 19" and there is a tool you get for the other nut. I have found a 3/8th (I believe) 12 point socket will fit on the square. You loosen the lock nut, then you tighten the band adjustment bolt to 10 foot pounds. Then you back the bolt off 2 full turns, then hold it in place while re-tightening your lock nut. I had to adjust my bolt in 1/4 turns at a time after test driving to get the transmission to shift just right.

Overdrive is designed for highway use, to lower the engine's rpm's and conserve fuel. It will not hurt your vehicle to drive it in drive in the city.

your transmission is slipping

Sounds like the shift kit is warn out in the transmission. The overdrive line may not be able to provide enough hydrolic pressure to engage the gears to move the truck. When you switch to regualr drive, that line is able to build the hydrolic pressure to engage the gears. At a certian speed (for the transmission, certian hydrolic pressure) there is enough pressure to engage the gears in overdrive, but go below that, and you have to start in drive again. If this is the case, there is no easy fix for that and I recomend taking it to a transmission shop to have your shift kit examined. Opening up an automatic transmission requires specalized tools, clean shop enviroment, and knowlage more then the average back yard machanic has.