Installing Transmission
Thread Starter
|
New User
Joined: May 2009
Posts: 14
Likes: 0
Installing Transmission
Okay, I found a used transmission with 30k on it for my 98 Expedition E.B. w/4x4.
Questions? Where is a good source for proceedures on doing the replacement? Anyone have experience in this area? Suggestions/thoughts?
Thanks,
Don
Questions? Where is a good source for proceedures on doing the replacement? Anyone have experience in this area? Suggestions/thoughts?
Thanks,
Don
Thread Starter
|
New User
Joined: May 2009
Posts: 14
Likes: 0
Right, I most likely will find a Haynes Manual to walk through the process.
Thanks for the info.
Super Moderator
Joined: Apr 2004
Posts: 34,505
Likes: 2,822
Good luck. Be sure you have a safe place to do this and don't get hurt or drop the trans or TC. Hence the lift and trans jack suggestions.
Suggesting the manual seems a chickenfeathers way out, but the details and sequencing of things can be very important.
Suggesting the manual seems a chickenfeathers way out, but the details and sequencing of things can be very important.
Thread Starter
|
New User
Joined: May 2009
Posts: 14
Likes: 0
I hear ya! I'm usually very careful under a vehicle. Found out the trans weighs around 160#, so not too bad.
The trans I'm getting comes with a TC, with only 30k on it. So, I'm thinking that was a good deal (I pray).
FTE Legend
Joined: Jul 2005
Posts: 65,938
Likes: 1,432
From: Millersville, MD
What year is the tranny? Also what model? A '98 or newer 4R70W (if that's what you have) is lots better than any previous year. I wouldn't use anything but a '98 or newer. Look at the top of the tranny...towards the front if I remember correctly...the year is stamped into the case.
Thread Starter
|
New User
Joined: May 2009
Posts: 14
Likes: 0
Trending Topics
Super Moderator
Joined: Apr 2004
Posts: 34,505
Likes: 2,822
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Thread Starter
|
New User
Joined: May 2009
Posts: 14
Likes: 0
This is weird... I was getting a trouble code P0123, TPS sensor. I change the sensor and installed a brand new one. Now all worked great including the shifts were more relaxed. However, the trouble code PO123 came back up. So, I took voltage readings on the TPS and the voltages came up backwards. It's supposed to be .5 - 1.0 volts in idle position and 4.5 - 5.0 in full throttle position. What happened is the volts were reversed. However, the transmission shifted better and engine ran fine.
Then, this morning on the way to work as I was puzzled, I noticed I was getting great mileage (20+ mpg). Thinking that the better shifting transmission was doing it's job. Then I noticed as I coasted down a hill, the mileage got worse. Then on the interstate it continued to go lower (average). So, I switched to instant mileage and sure enough, when I let off the gas, the mileage dropped to less than 5 mpg, then pressed on the gas and it jumped to + 20 mpg.
I put the TPS in the same direction as the one that came off. Do you think it can be installed backwards? There is only one way to put those in, right? Wires are towards the front, just how I found the one I replaced.
Thoughts?
Also, I might have a 30k mile tranny for sale... lol!
Then, this morning on the way to work as I was puzzled, I noticed I was getting great mileage (20+ mpg). Thinking that the better shifting transmission was doing it's job. Then I noticed as I coasted down a hill, the mileage got worse. Then on the interstate it continued to go lower (average). So, I switched to instant mileage and sure enough, when I let off the gas, the mileage dropped to less than 5 mpg, then pressed on the gas and it jumped to + 20 mpg.
I put the TPS in the same direction as the one that came off. Do you think it can be installed backwards? There is only one way to put those in, right? Wires are towards the front, just how I found the one I replaced.
Thoughts?
Also, I might have a 30k mile tranny for sale... lol!
