Ford Mustang Transmission Problems & Cost | 4R75E | 5R55S | 6R80

The Ford Mustang was equipped with the 4R75E or 4R70W transmission as well as the 5R55S and 6R80 models. But they aren’t without their problems though, so let’s look at some of the most common Ford Mustang transmission problems, look at cost estimates and figure out what you can do about them.

Need a replacement transmission? Get an estimate for replacement transmissions and local installation. Look up your transmission model by vehicle make and model.

What Transmission Do I Have?

Ford Mustang Transmission Models

Ford Mustang: 4R75E / 4R70W Transmission
Ford Mustang: 5R55S Transmission
Ford Mustang: 6R80 Transmission

Ford Mustang Transmission Replacement Cost Estimate

Pricing varies by model. To be 100% sure on pricing, have your VIN# handy and use our Get An Estimate feature to look up your transmission by VIN#.

Replacement Ford Mustang Transmission Prices:

Note: 6R80 currently Dealer Only

What are the DTC codes related to Ford Mustang transmission problems?

Ford Mustang Transmission Recalls

Recall ID 12C23-S1 – Ford 6R80 Transmission

– Summary
In May 2012, the Ford Motor Company issued a compliance recall on the following vehicles equipped with the 6R80 transmission:

2011 – 2013 Ford F150
2011 – 2013 Ford Expedition
2011 – 2013 Ford Mustang
2011 – 2013 Lincoln Navigator

– Consequence
It seems that a faulty 6R80 transmission range sensor / TRS can cause a number of transmission problems when the shifter is placed in the Reverse position. The symptoms include failure to engage reverse gear, the electronic PRNDL indicator will not display reverse (if equipped), the backup lamps will not function, and intermittent rear video camera operation (if equipped).

– Remedy
Replace the 6R80 transmission lead frame (which includes the TRS sensor). Owners may contact Ford at 1-866-436-7332 or NHTSA at 1-888-327-4236

Ford Mustang Technical Service Bulletins (TSB)

TSB 11-8-4 – Fluid leak from bell housing – 6R80 transmission
2011 Ford Expedition – 2011 Ford F150 – 2012 Ford Mustang – 2011 Lincoln Navigator
Problem – Some vehicles built between 4/15/2011-6/8/2011 may experience a transmission fluid leak coming from the bell housing area.
Solution – Install updated transmission pump assembly

TSB 14-0217 – Delayed engagement park forward or reverse
2011 – 2014 Ford Expedition – 2011 – 2014 Ford F150 – 2011 – 2014 Ford Mustang – 2011 – 2014 Lincoln Navigator
Problem – Some vehicles may experience a noticeable delay when trying to engage a forward or reverse gear from Park. This can happen with the vehicle is cold (i.e. has not been driven for several hours).
Solution – Install updated 6R80 transmission pump

TSB 18-2079 – Harsh or delayed shifting and/or P0711 DTC – 10R80 Transmission
Problem – Some owners may experience usually harsh or delayed gear changes. There may also be a P0711 diagnostic trouble code saved in the transmission control module
Solution – The powertrain control module will need to be updated with new software (release 108.04 or higher). Once the update is complete, the adaptive transmission shift strategy program may temporarily cause usually firm upshifts and downshifts while it ”relearns” your driving style.

Common Problems with the Ford Mustang Transmission

TCC Application in 2nd Gear – 4R75E Transmission

Problem – A lack of power after the 1-2 shift can be caused by an un-commanded torque converter clutch application / TCC apply. The P0742 and/or P1742 DTCs may also be stored.
Solution – The #7 check ball inside of the valve body may have worn down to an incorrect size, allowing the torque converter clutch to apply after the 1-2 shift. Replacement of this check ball may solve the problem.

Slipping in All Forward Gears – 4R75E Transmission

2005 – 2006 Ford 4R75E Transmission
Problem – Many 2005 – 2006 Ford vehicles equipped with the 4R75E transmission, may experience excessive slipping in all forward gears. Metal shavings may also be present in the transmission fluid.
Solution – Replace forward clutch drum and update ECU with program 06B06

Lack of Response
Leaking Fluid
Low Fluid
Burning Smell
Grinding or Shaking
Whining, Clunking or Humming
Refuses to Go Into Gear
Torque Converter Issues
Valve Body Issues
Transmission Noisy in Neutral
Gears Slipping
No 3rd or 4th Gear
No 1st or 2nd Gear
No Reverse
Dragging Clutch
Trouble Codes / Check Engine Light

Ford Mustang 3rd gear slip

When you put the hammer down, you just want your pony to go. But for models made after 2001, Ford Mustang 3rd gear slipping is not uncommon in cars equipped with the 4R70W/4R70E or 4R75E transmission. During the 3-4 shift, the transmission will go into neutral instead of 4th gear. You may also notice a lack of engine braking if you manually shift down into 2.

Cause of most Ford Mustang 3rd gear shift problems

These Mustang shifting problems are usually due to a broken overdrive servo retaining snap ring or a broken overdrive servo piston ‘E’ clip. If this happens, the broken pieces can work their way into the overdrive servo regulator valve, which will keep the overdrive band from a full apply.

When fixing your Ford Mustang 4R70W/4R70E or 4R75E transmission, the mechanic should remove the overdrive servo regulator valve assembly from the valve body and clean/repair any damage caused by the debris. Overlooking this step can lead to more serious transmission problems down the road. Luckily, every reman Ford Mustang transmission from Street Smart Transmission is completely disassembled and inspected prior to the build and subsequent dyno testing, ensuring that won’t happen to you.

How much is it going to cost to fix my 4R70W/4R70E or 4R75E transmission?

Unfortunately, the problem described here will require the removal and disassembly/partial disassembly of your transmission. Given the labor time involved to remove the transmission from the vehicle (this is not a simple task), most repair shops will recommend that you go ahead and rebuild the entire transmission while it’s out. Since they already have to tear it down to replace the 4R70W/4R70E or 4R75E transmission, it sort of makes sense to spend the extra money to do that. After all, you should get a lot more mileage out of your transmission once it’s rebuilt. And since they’ve already got the transmission apart, might as well, right?

Can I drive with a transmission problem?

If your Ford Mustang can still make it up and down the road, you might say “It’s fine, I’ll just drive it until I can get it fixed”. But that is not always a good idea, depending on the symptoms. You see, there are a lot of (very expensive) moving parts inside of a transmission, and if something isn’t right, continuing to drive with a transmission problem could damage something else.

How often does a Ford Mustang transmission need to be replaced?

The overall lifespan of a Ford Mustang transmission largely depends on how well it was maintained. Factory design flaws also factor into this equation, along with how/how hard you drive. But on average, we’ve seen the Ford Mustang transmission last for between 130,000-180,000 miles. A high quality replacement transmission however, can last considerably longer if all of the factory design flaws have been addressed and the vehicle has been maintained.

How are Ford Mustang transmission issues diagnosed?

It is fairly easy to guesstimate what the root cause of your Ford Mustang transmission problems might be, but you won’t truly know unless you have the right tools and experience. A good mechanic or transmission repair center will be able to connect your truck to a computer and find out which diagnostic trouble codes (DTC’s) have been stored. Once they know what to look for, they can perform a visual inspection to verify the problem.

How is a Ford Mustang transmission replaced?

In order to replace your Ford Mustang transmission, the truck has to be lifted from the ground in order to gain access to all of the parts that will need to be unbolted. Then the transmission can be lowered to the ground (typically with a transmission jack), so the new transmission can be installed. Once it is in place, for the 6L80, the vehicle PCM will have to be reprogrammed / reflashed to accept the new transmission using the latest GM subscription.

Recommendations for Ford Mustang transmission issues?

To save time and get back on the road faster, have your 17-digit truck VIN# handy and you can get an online quote for a reman Ford Mustang transmission here, then find a local shop using our Find a Shop guide to install it for you.

How to Solve Ford Mustang Transmission Problems

Solution A: Buy a Used Ford Mustang Transmission

The quickest way to fix your transmission problems is to simply buy a used transmission or used transmission. These can be found at most junk yards, and they often come with a 30-90 day warranty. However, there’s no way to determine the actual condition of the internal components, so you could be spending a bunch of money to have the exact same problems. Plus, that warranty only covers the transmission if it’s defective, not the labor costs that you’ll have to pay.

Solution B: Buy a Rebuilt Ford Mustang Transmission

Another option would be a rebuilt transmission or rebuilt transmission. A local repair shop will remove your transmission, then install a bunch of new parts during the rebuild. The problem here is, the skills and experience of each transmission rebuilder will vary widely from shop to shop, so you could have problems from something that wasn’t adjusted properly. And the 1-2 year warranty might only cover you at certain transmission repair shops, in a specific geographical area.

Solution C: Buy a Remanufactured Ford Mustang Transmission

Many owners depend on their vehicle to commute and get things done. Their gasoline engines are designed to go 100’s of thousands of miles, so it makes sense to invest in a remanufactured transmission.

Need a replacement transmission? Get an estimate for replacement transmissions and local installation. Look up your transmission model by vehicle make and model.

What Transmission Do I Have?

What Problem Does Your Ford Mustang Have?

Let us know the year, mileage and problem you’re having as well as any trouble (OBD) codes you’ve found. If you’ve been given a quote or paid for a repair, we’d like to hear about that too!