Ford Explorer Transmission Problems & Overview

Launched in 1990 for the 1991 model year, the Ford Explorer was a new kind of family vehicle that immediately became one of Ford’s best-selling models. In 1998, the 4-speed 4R55E transmission used in the second-generation Explorer V6, was upgraded to a new 5-speed unit. The 5R55E featured an additional forward gear for better fuel economy, and it’s regarded as the first 5-speed automatic to be used in an American production vehicle.

The Ford 5R55E transmission was used in both 2 and 4-wheel drive Explorers, as well as many other FoMoCo models like the Mustang, Ranger, Lincoln LS and Mercury Mountaineer. Given the popularity of these vehicles, it’s pretty hard to find a good one on the used market. In fact the consumer review site Car Complaints declared the 2002 Explorer to be the “Worst Vehicle on Record”, due to the large number of reported transmission failures that occurred under 100,000 miles. The 2004 Explorer is ranked the 3rd worst vehicle, followed by the 2003 Explorer at number 6, and the 2005 Explorer brings up the rear at number 18.

Does something seem wrong with your Explorer? Let’s look at some of the most common transmission problems, and see what you can do to get your car back on the road.


The 3-door Ford Explorer Sport continued to offer the Mazda derived 5-speed manual transmission until that model was discontinued in 2003. The 5-door Explorer could still be ordered with the manual until the 2002 model year. After which, the 5-speed Ford 5R55E  became the only available transmission.


Although it looked quite similar to the previous model, the 4th generation Ford Explorer featured a number of significant improvements, including the brand new 6-speed 6R automatic transmission, which was based on a ZF design and built in-house by Ford. The new Ford 6R transmission was only available in V8 models, so they redesigned the 5-speed auto (now called the 5R55W) and made it standard equipment on V6 models.


The all-new 5th generation Explorer now used two variations of the 6F transmission exclusively. The 4-cyl Explorer EcoBoost received the standard Ford 6F transmission, while V6 models got the 6F SelectShift. The twin-turbo Ford Explorer Sport used the same transmission, with the addition of paddle shifters.

Failure of the solenoids

One of the most common Ford Explorer transmission problems is a failed solenoid. These little plunger like devices are used by the computer to route pressurized transmission fluid and change gears. To activate one of the solenoids, the computer sends an electrical charge though a coil of wire that wraps around the plunger mechanism. Heat and vibration can cause these wires to short out, which will lead to all sorts of transmission problems.

If you want to check the functionality of your solenoids, simply hook an ohmmeter to the two wires coming off of the solenoid. The reading should be somewhere between 20-30 ohms. If you  get a reading above or below that number, it’s a safe bet that solenoid won’t function properly.

Explorer Technical Service Bulletins (TSB)

2013 TSB 365099 / 13-5-31


According to the Technical Service Bulletin: “Some 2013 Explorer vehicles equipped with 3.5L GTDI (twin-turbo EcoBoost 3.5L) engines may exhibit long crank-to-start times and delayed/harsh downshift when commanded in the middle of a 4-5 or 3-5 upshift and delayed upshifts from 3rd, 4th or 5th gear when transmission fluid temperature is below 21 degrees Celsius (70 degrees Fahrenheit).”


To fix the problem, a Ford dealer will need to update the Powertrain Control Module (PCM) software.

2013 TSB 365977 / ASI-32216


Certain 2013 Explorers with the 6R35 transmission may experience a fluid leak from the left hand half shaft seal. This is likely due to premature bushing or seal wear, caused by the half shaft surface finish.


Fixing the problem will require the installation of an updated case bushing, seal and half shaft.

2002 TSB 190029 / 04-24-17


Certain 5-speed auto equipped 2002 models built before 03-04-2002, may experience slipping on the 2-3 shift, or a loss of 3rd gear altogether. This problem is most likely due to a broken intermediate band, which could trigger diagnostic trouble codes: P0733 and P0745


To properly fix this problem, you’ll need to replace both the intermediate and OD bands, along with the pistons. The direct clutch drum should also be inspected for damage.

2002 TSB 88202 / 01-10-7


2002 models of the Ford Explorer that were built between 11-13-2000 – 03-08-2001, might experience a problem where the Transmission Control Indicator Lamp (TCIL) flashes with different DTC / diagnostic trouble codes, like P0713, during the self test. This is likely caused by water seeping into the transmission solenoid body connector.


If this happens, the transmission wiring harness will need to be replaced with updated part # 1L2Z-7C078-AB.

What Transmission Does a Ford Explorer Have?

YearEngineTrans TypeDrive

How to Diagnose & Fix

  1. Check the OBD Codes
  2. Check the fluid level
  3. Test transmission pressure
  4. Drop the transmission pan
  5. Repair, replace or rebuild

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15 thoughts on “Ford Explorer Transmission Problems & Overview

  1. Hi….. i have ford explorer 2006 v6 4.0 5r55s there is problem in transmission no drive no reverse!!! Can you tell me what I should to change parts of transmission to fix the problem??? Please I need your help guys.

  2. I have a 2007 Ford Explorer. The transmission shifts fine while driving, but when you apply the brakes to stop really fast…The transmission hesitates to go into gear. It only does this when you stop too fast.

  3. Have a 2001 Ford Explorer Sport Trac 4X4. Just changed the tranny filter and fluids a couple of months ago. I was driving to work on 3 lane freeway in the middle lane the car ahead of me and I ran over a big piece of truck tire. On the way home I noticed the transmission was jumping and slipping. I pulled over to check things out. Noticed a line from the transmission cooler was leaking pretty good. Luckily I had extra fluid in the truck from when I changed the filter. I sat and late everything cool down for well over an hour. Checked and topped off the fluid again to make it the last 3 miles home, which I did. Just replaced the line and topped the fluid off again. Unfortunately it won’t move in any gear. The truck is on it last leg and been a super great truck with 225000 miles and it does have a cracked frame on the drivers side rear.

    So my question is… is it shot? Or could it be a torque, convertor, pump, etc? Is it worth even towing to a transmission and letting them check it? Or just put it out of its misery? Been looking for a replacement truck just haven’t found what I am looking for. But don’t want put $1500 -$2500 into a vehicle with 225000 miles and a cracked frame. Any advise or input is great appreciated and thanks to anyone who responds in advance!!!

  4. I have a 2002 Ford Explorer (automatic) which is on its third transmission. Recently had shifting issues, took it to my mechanic who replaced the “56954K Solenoid Valve Pack-New(N)”, new Cas Merc V Trans Fluid(N), and TF340 Transmission Filter(N). Now when I hit the brakes hard it appears to shift into neutral. It pauses about 15-30 seconds and then engages and goes. This also happens if I am backing out of my garage, put it in drive, there is a pause before engaging. My mechanic has apologized because he has called everyone he knows, but cannot figure this out. So I am getting my Explorer back with the problem remaining.

    • This is what I am experiencing with my 2002 (automatic) Ford Explorer. The transmission was replaced back in 2008, and it worked fine up until about a month ago. Please let me know if you have found anything out! Thank you!

  5. I have a 2003 ford explorer Eddie Bauer 4.0L, V6 with 200,000 miles and the transmission slipping going from 1st to 2nd, the other gears shift fine and when warmed up my od off light flashes and check engine light and the code that comes up is p0775. We changed the transmission fluid and filter! What do I need to do to fix this?

  6. My 99 Explorer won’t downshift uphill, almost ever, unless I let off throttle, then ease on the gas again. Wheel speed sensor on DS front needs replace, ABS light on. Would it be more a speed sensor issue, or a transmission selenoid that may be causing the issue? Any help appreciated, thanks

  7. I have a 08 ford Expedition when I crank it continues to turn..also in low speed it hesitate like it’s not switching gears. Help?

  8. I have 2007 ford explorer transmission wanto take off in drive but it will if you manual shift it will take off but some times drive is out and reverse then you cut it off and start it back up and it will pull in drive what is the problem

  9. I have a 2008 explorer that seems to have trouble shifting gears at times. Especially if I’m going uphill. Wrench symbol just showed up on dash. What could be the problem?

    • Hello Tracy and everyone else with a shifting problem. I have had two Mercury Mountaineers (06 and 08 – V8/AWD/6R TRANNY) and on both of these vehicles I have experienced the shifting problem. It gave all kinds of codes related to everything but the engine. On the 06, I had the tranny rebuilt with no success. I changed the spark plugs and wires and it ran great afterwards What I recommend is replacing all the spark plugs (if you haven’t already done a tune-up) and if the issue continues troubleshoot the Coil packs mounted on the individual spark plugs to see if one is defective. I replaced all of them just to be sure.

  10. My daughter was on the interstate today when the transmission suddenly acted like it was in neutral. Will not work in any gear selected. It has an automatic transmission with about 116,000 miles on it. The vehicle is in superb condition. Is this an easy fix?

  11. I have a 2002 explore i took it to the shop because it was making a grinding noise underneath they told me it was my control arms the replaced them and i still had the problem. can anybody tell me what the problem could be. I took it back they checked my transmission fluid and what they fixed was not it. can anybody explain. The car has 127,000 miles in great shape.

  12. Hey all,
    I have a 2008 V6 ford explorer. it is a 4WD and the transmission just went out and doesn’t work anymore at all. I looked for a replacement but all are expensive and I am on a budget. does any of you have any other options where to buy it.?
    Does a 2005 or 2006 transmission work for a 2008???
    Please help.

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