Transmission Problems?
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Transmission Problems?
Im looking to trade in my '92 F150 for a 98-02 F150 and I was maybe thinking about going to a automatic transmission. I was wondering what problems these transmissions have and if the failure rate was high for them?
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From: Louisville,Ky.
The 4R70W and the 4R100 trannys are both very reliable. I recommend having the fluid flushed about every 50,000 miles or so, but they seem to last a long time. Much stronger that the manual trannys.
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From: SE Texas
'98-up 4R70W's are the better built 4R70W's.The '97's have a roller intermediate one-way clutch that's a guaranteed failure. Some of the early '98 build 4R70W's have defective Mechanical didoe intermediates that will fail over time,but after that,they're all really tough when properly maintained.
JL
JL
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From: N. Mississippi
Originally Posted by Johnny Langton
The '97's have a roller intermediate one-way clutch that's a guaranteed failure. JL
My 97 has that tranny and is going on 166 thousand miles. It could fail on me today but then I can't complain if it does.....due to the life it's led.
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From: SE Texas
Originally Posted by ddrumman2004
Guaranteed to fail? Any idea when?
My 97 has that tranny and is going on 166 thousand miles. It could fail on me today but then I can't complain if it does.....due to the life it's led.
My 97 has that tranny and is going on 166 thousand miles. It could fail on me today but then I can't complain if it does.....due to the life it's led.
JL
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Originally Posted by Johnny Langton
There are very,very few 4R70W's with the roller clutches for the intermediate that last beyond 50-60K miles. I've got a '95 trans here that's out of a Tbird of a friend,and it's got almost 300K miles on it.Never had a problem. But I've also been through dozens of them with less than 50K miles that the roller clutch is in pieces and falling apart. It's a crapshoot with them,and is very rare to find one that lasts.
JL
JL
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Postmaster
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From: SE Texas
Originally Posted by liquid 1
Johnny you seem to know your trannys and fords, Add me to the list, My wife's 97 4.6L expedition, has over 98,000 and runs and moves like a top, It aint even ever burped with a load on it Knock on wood...Thanks for the info, I do need to service the tranny on hers and my 01 F150, do you reccomend a flush or a pan and filter and tranny fluid change???...
I never flush any trans.If there's any kind of debris in it-you're going to circulate it through the entire system,and the filer needs to be changed and the magnet inspected at service ayway.
JL
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Thanks, Ive always been weary of the flushing methods and have liked the old fashion way, cant go wrong with a new filter, in any hydraulic application..Do you have a trick to working and getting all the fluid outa the tranny with it still in the truck..or is a new filter and cleaning the best possible way to remove all the cataminents..
Postmaster
Joined: Oct 2006
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From: SE Texas
Originally Posted by liquid 1
Thanks, Ive always been weary of the flushing methods and have liked the old fashion way, cant go wrong with a new filter, in any hydraulic application..Do you have a trick to working and getting all the fluid outa the tranny with it still in the truck..or is a new filter and cleaning the best possible way to remove all the cataminents..
JL
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From: Central Valley, CA
I have a 99 F150 4 X 4. I am on my 3rd tranny. Ford has covered all of them. 2 and 3 were rebuilt trannys. I do drive them in rough terrain with a lot of stop and go in the field, so it may be the way I drive it. I had a 97 that had 2 trannys also. No matter if it's my fault or a Ford problem I still will always drive a Ford truck.
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