Ecoboost 3.5 - Expected Longevity
Elder User
Joined: Oct 2011
Posts: 722
Likes: 6
Actually the '07 Expeditions were built with a version of this tranny. There have been some reports of a bad batch of torque converters and some pump failures likely due to the manufacturing process and not being well flushed but these transmissions seem to be tough as nails.
Even though the 6-speed in my '08 Chevy 3/4 6.0L gasser wasn't as sophisticated as the one in my new F-150 it was stout and shifted firmer if that makes any sense. Anyway only time will tell, if there is one thing I'm not impressed with right now it's the driveshaft/ yoke with this truck. I've been in and out of the dealer wrestling with them over the sloppy slip/ bump in the shaft.
Super Moderator
Joined: Jan 2008
Posts: 40,024
Likes: 1,520
From: Maine, Virginia
Normally I agree with you, but "tough as nails" is a lot of faith. IMO pump & torque converter work is fairly serious. Perhaps this trans is tough but only at the expense of too soft of programming and alway forcing the truck to be in the tallest gear as possible at all times short of WOT. I still believe it too early to tell.
Even though the 6-speed in my '08 Chevy 3/4 6.0L gasser wasn't as sophisticated as the one in my new F-150 it was stout and shifted firmer if that makes any sense. Anyway only time will tell, if there is one thing I'm not impressed with right now it's the driveshaft/ yoke with this truck. I've been in and out of the dealer wrestling with them over the sloppy slip/ bump in the shaft.
Even though the 6-speed in my '08 Chevy 3/4 6.0L gasser wasn't as sophisticated as the one in my new F-150 it was stout and shifted firmer if that makes any sense. Anyway only time will tell, if there is one thing I'm not impressed with right now it's the driveshaft/ yoke with this truck. I've been in and out of the dealer wrestling with them over the sloppy slip/ bump in the shaft.
Cross-Country
Joined: Oct 2011
Posts: 82
Likes: 1
I think Ford did their homework on the Ecoboost. The engine is well thought out but the automatic transmission in it is the best I ever drove. The programming allows you to give a little throttle progressively without a downshift even going up a steep grade. But if you push the pedal down, it shifts down smoothly without any hunting for a gear even under load. I can't recall a vehicle I ever bought that I was more impressed with its engineering.
Laughing Gas
Joined: Jul 2004
Posts: 1,245
Likes: 0
Despite their own service manuals admonishing mechanics to lube the splines on the driveshaft yoke, they seem to only put a token amount of grease on them at assembly. Go figure.
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