2007 E350 transmission problems
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Cargo Master
Joined: Apr 2013
Posts: 3,087
Likes: 24
From: Central Florida
2007 E350 transmission problems
It is shifting really really hard all of a sudden, and won't go into overdrive. Running 3000 RPM on the highway.
Tow/haul mode seems to be not working also.
Hoping Mark Kovalski can give me some advice. Before I get to the Ford stealer.
Tow/haul mode seems to be not working also.
Hoping Mark Kovalski can give me some advice. Before I get to the Ford stealer.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,725
Likes: 2,651
From: SE Florida
I don't know why they need to r&r the valve body, that isn't required to change the TFT (Trans fluid temp) sensor. The TFT sensor is a known failure point, I don't doubt it needs to be changed.
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Cargo Master
Joined: Apr 2013
Posts: 3,087
Likes: 24
From: Central Florida
I'm not cool with removing a valve body but I'll dig into the pan etc.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,725
Likes: 2,651
From: SE Florida
No, you don't remove the valve body to change the harness.
Changing the TFT is easy to do if you can remove the pan.
Changing the TFT is easy to do if you can remove the pan.
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Cargo Master
Joined: Apr 2013
Posts: 3,087
Likes: 24
From: Central Florida
I watched a YouTube video about changing the TFT but I'm left wondering where is the other end of the harness.
Advice?
Advice?
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Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,725
Likes: 2,651
From: SE Florida
The harness inside the trans goes from the TFT to the connector on the passenger's side of the trans. Now I think I understand why they are going to R&R the valve body. It's the internal harness they are going to replace, not the external harness.
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Cargo Master
Joined: Apr 2013
Posts: 3,087
Likes: 24
From: Central Florida
So how big/bad of a job is it? I'm a very good technician overall, but no experience inside an automatic transmission except for fluid/filter changes 20years ago.
Also just by those engine codes how sure is it that the wiring harness is bad? Or how likely is it just the sensor?
Thanks a million for your time and attention here Mark. I highly appreciate technical advice from a guy of your caliber- especially since I know you aren't trying to maximize your profits via my wallet.
Thank you
Also just by those engine codes how sure is it that the wiring harness is bad? Or how likely is it just the sensor?
Thanks a million for your time and attention here Mark. I highly appreciate technical advice from a guy of your caliber- especially since I know you aren't trying to maximize your profits via my wallet.
Thank you
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,725
Likes: 2,651
From: SE Florida
It's not a hard job. You do need an inch-pound torque wrench to put the valve body back on.
There is NO WAY to tell if it is the sensor or the wiring harness just from the codes. Many places just replace both. A few minutes with a multimeter could diagnose if the harness is bad or not.
There is NO WAY to tell if it is the sensor or the wiring harness just from the codes. Many places just replace both. A few minutes with a multimeter could diagnose if the harness is bad or not.
Thread Starter
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Cargo Master
Joined: Apr 2013
Posts: 3,087
Likes: 24
From: Central Florida
Thanks Mark!
So tell me if I have this correct:
– Drain the fluid/remove the pan
– Remove the filter for accessability
– Unplug the electrical connector to the TFT
– R/R the TFT with new AutoZone/Advanced/Rock auto part
– Remove the bolts for the valve body and slowly/carefully lower the valve body, being careful not to turn it upside down so all check ***** come out and the magic spirits escape
– Remove the TFT harness and inspect.
Am I correct so far?
What exactly goes wrong with these harnesses? Is it physical in nature such as chafing?
– Drain the fluid/remove the pan
– Remove the filter for accessability
– Unplug the electrical connector to the TFT
– R/R the TFT with new AutoZone/Advanced/Rock auto part
– Remove the bolts for the valve body and slowly/carefully lower the valve body, being careful not to turn it upside down so all check ***** come out and the magic spirits escape
– Remove the TFT harness and inspect.
Am I correct so far?
What exactly goes wrong with these harnesses? Is it physical in nature such as chafing?
