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Explorer & Ranger Transmissions, Transfer Cases, & Differentials Transmissions, Transfer Cases. A4LD, 4R70W, 4R44E, 4R55E, 5R44E, 5R55E, M5OD, BW 1354, Control Trac, GEM, AWD. Ford 8.8", Dana 35

Transmission problems on 2005 Ford Explorer

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Old 04-27-2011, 02:13 AM   #1
2005 Ford Explorer XLT
Join Date: Apr 2011
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(Original Poster)
Transmission problems on 2005 Ford Explorer

My apologies, I previously posted this in the wrong section.

Here is my problem:

My check engine light came on yesterday. On the dash it also says CHECK TRANSMISSION and the O/D flashes on and off.

I have a 2005 Ford Explorer XLT, 140K miles, trans fluid has never been flushed, all other repairs/oil changes have been consistent and regular.






Engine/transmission problem background:

6 months ago, the vehicle had been overheating. I swapped out 2 of the sensors and that solved the problem.

2 months ago, CHECK TRANSMISSION indicator came on the dash, O/D light flashed on and off. Besides that, no problems at all with driving. Just these lights on the dash.

1 month ago, all lights go off. Nothing wrong with driving, no lights on dash indicate a problem.

3 weeks ago, truck starts making a whining noise when I drive. Only when the RPM's go up though, when truck maintains a consistent MPH or dips below that, noise goes away. Only when I put my foot on the gas do I hear this noise.

2 weeks ago, all lights come back on the dash. Tranny starts to slip when I hit 20 mph and 30 mph. Sometimes slips at 50 mph. CHECK TRANSMISSION indicator and O/D flash on and off, then go off completely.

Yesterday, all lights come back on. CHECK ENGINE, CHECK TRANSMISSION, O/D light stays on.

I use my Equus Innova 3100 tool on the truck and get the codes above.

Anyone pull these codes and have these problems?
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Old 04-27-2011, 02:41 AM   #2
Ocean Pacific
Lake Arrowhead, CA
'03 Lifted/Loaded/Locked
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It could be 2 things. First, and an easier fix would be a broken servo piston. You need to determine if its 2nd and 5th gear slipping/not engaging or 3rd and 4th. Unfortunately, this is 99% of the time not the problem. Second, its the bands inside the transmission. This requires a rebuild, which is almost always the problem.

I have this same problem with 2nd and 5th not fully engaging. I went with the servo piston in hopes of a quick fix, but was not the problem. Just have to get used to a weak 2nd and a nonexistent 5th until I can afford a new trans! I have 155K clocked.
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Old 12-23-2012, 11:33 AM   #3
Hampton, New Hampshire
2002 XLT 4.0 4x4
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from all the reading i have done about these transmissions, the servo bore o-ring mod has work in a majority of the threads i have read and believe me it's been many threads.

i think my problem is beyond that since i can not get the truck to engage in the D position, but can in 1,2,3 and once above 45 mph i can sometimes get it into the D position and the O/D light will flash.

so, judging by your symptoms you could check your band adjustment and if it checks out good, then most likely the servo bore with o-ring mod would fix your problems like so many others.
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