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Posted on Jan 02, 2017
Its weird but I had a fuse blow out awhile back that is the same fuse that works the cab lights when you open the doors. When this fuse went out it also made it shift odd and hard when it did shift. Since it is only intermittent in your case, It may just be a weak fuse.
Posted on Aug 28, 2008
SOURCE: 1993 FORD RANGER 4 WHEEL DRIVE
there is an actuator on the back of the transfer case that likes to fail odds are this is where your problem is. check power and ground here and if you have both replace the actuator
Posted on Dec 01, 2008
I have that exact same truck and transmission and My Transmission did the exact same thing about a year ago and there was some kind of snap ring inside the transmission that broke. I originally thought it had to be an electirical problem because the truck shifted fine until OD or if i turned OD off. The 4r70w is a light transmission and i would suggest you have a shift kit put in and they make a heavier kit to beef it up.. Sorry its probably not the new you were looking for.
Posted on Apr 15, 2009
many of these trucks have a mazda trans in them, to remove these shifters you will need to remove the 4 phillips head screws from the corners of the trim around the shifter boot and pull it up out of your way. it's not necessary to remove the boot from the shifter, just lift it up for access to the top of the trans. at the base of the shifter on the top of the trans you will see a plate attached with torx head screws. remove all but 2 of them, now make sure the trans is in neutral and remove the last 2 screws and pull the shifter straight up. the shifter is now out leaving a big hole open on the top of the trans for dirt to fal into so put a wrag in it or screw a piece of cardboard to it. installation is the reverse. good luck
Posted on Oct 08, 2009
Suggest you check the fluid level of the transmission first. Remove the fill plug, and see if it is Below the proper level. Do Not fill at this time! There is a reason for this.
Then I would suggest draining the fluid. You are also looking for brass fragments in the fluid. Drain into a three quart metal, or plastic drain pan. (They are approximately 18 inches across, and 4 inches deep)
1.Manual transmissions use Synchronizer's made of a brass alloy. The synchronizers have tapered teeth, that the nose of the teeth can be worn down. Also a tapered surface on the synchronizer, that can be worn down. Brass fragments in the transmission fluid is a sign of this wear.
Some brass 'dust' will occur as normal wear. A large accumulation means you have problems. Transmission is hard to shift, is one of those symptoms due to this.
This link to an animated working of a five-speed manual transmission, may help to explain how the components interact with each other, and also help me to explain the Synchronizer/s.
(From Howstuffworks.com - Auto- Under the Hood - Transmissions and Drivetrain)
Looking at the animation, observe the 'gold' colored parts. In particular, observe the the pair of gold colored teeth at the rear. (The teeth are in a vertical row, going up and down)
Now also observe the blue colored teeth next to them, on either side. (On the spinning gears)
You are looking at a side view of the transmission, and also a side view of the Synchronizers.
The synchronizers are round just like the gears. They have a Female tapered surface where they meet the gear. The gear has a Male tapered surface on the outside of the gear, that matches.
When the female tapered surface of the synchronizer meets the male tapered surface of the gear, the friction contact makes the synchronizer start turning the same speed, as the gear.
Helps the gear being shifted into start turning also, and the - teeth of the synchronizer, - gear to be engaged, and - already turning components are synchronized to each other. They will be all turning the same speed, so shifting will be smooth.
This shows you Synchronizer rings for a 4-speed Muncie transmission,
Enlarge it for a better view.
See the teeth going around the synchronizer ring? Notice that they are pointed, or V shaped. When the nose, or tip of this V is worn down, a manual transmission is hard to shift.
Also observe the flat landing on top. (In this view it's on top) The flat landing has three rectangular cutouts in it. (There are used for Detents)
Come from that top landing, down the side to the teeth. This Side has a tapered surface. Tapered ever so slightly, that it is not readily visible in this photo.
When this tapered surface wears down, the transmission is hard to shift.
1.Low fluid will cause hard shifting. It will also cause abnormally high wear of the synchronizer rings, (Synchronizer Rings are also referred to as 'Blocker Rings')
2.Worn Synchronizer Rings,
Broken or worn Detent 'buttons',
Broken Detent Springs,
and worn Synchronizer Hub's,
will cause hard shifting.
Should you not have an abnormal amount of brass shavings in your transmission fluid, and found the fluid to be low, you may want to just replace the fluid to the proper level, and see if this works first.
If so, I suggest contacting your Ford dealer, and see what the proper transmission fluid is for YOUR Ford Ranger. They will go by THE transmission is used in your truck, and will have any updates if better fluid has been developed since your truck was made.
I know dealers are expensive to buy from sometimes, but I implore you to use the transmission fluid they recommend.
It will have special additives.
Posted on Oct 31, 2009
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