anybody know how dependable the 5 speed auto tranny is in the 2008
Ranger 4.0 litre 4x4s,and how many years have they been in service.

 

I am pretty sure the tranny is one of the weak points in the Ranger. But dont go on my word. It might only be the 3.0 tranny

 

some seem to be down right junk.. some seem to just keep going forever..almost seems like who ever built it matters haha

 

Its been in service since 95. Its had a few upgrades and a lot of tsb's along the way.

The 08 should be about the best this trans can be.


FWIW, i killed one at 108k in my 99(lost reverse). I got a rebuild off ebay, its a POS. Planning a vb swap here shortly.

 

Reverse problem is easy to fix with the tranny in the truck. Just a servo problem but it's the one next to the valve body inside the pan. Cheap fix.

Keep them cool, change the fluid often or use a good full synthetic. Don't do stupid things with them and they'll last. I use mine pretty hard. I had it apart at 90K to put a different output shaft in it and it was in great shape.

The one thing that did improve with my rebuild was reverse engagement. The replacement parts were better quality than stock and it goes into reverse almost instantly now and it didn't do that from the factory!

 

Keeping them cool will allow the transmission to last forever. If your truck doesn't already, add an aux trans cooler and a trans temp gauge (your truck doesn't have a trans temp gauge now).

If you can keep temps inside the transmission down to 150* or less, it will last forever.

 

or you could just buy one with a 5 speed manual tranny and not worrie about anything.

 

A lot of people do not know how to drive a manual transmission. For stop and go traffic, I wouldn't recommend a manual either.

 

Plus the manuals have been known to blow slave cylinders all the time. No thanks.

In 100k miles I have dropped my trans once. and that was 5k miles ago. Personally I think you have little to worry about.

I used to pull trailers all the time and now I am pushing around big tires.

Change the fluid every 30k and keep it cool, which if you leave it stock it will be cool enough.

 

Servo was fine when removed as was the gasket. When reverse died truck was moving and a very loud popping noise occurred and the truck just stopped.

Maybe I didn't see what broke with the servo or the sprag clutch broke.