Q: Transmission slipping, hard to stay in gear

asked by on October 29, 2015

The automatic transmission in my 2010 Ford Fusion started slipping while I was driving to work the other day. By the time I was driving home, the slipping was so bad that I got off the highway to drive at lower speed. Now it won’t go into gear. The transmission and drivetrain in general only had 30,000 miles on it. Is there some error in driving style that I may have made which could cause this? I drive pretty reasonably.

Automatic transmissions have been called “slush boxes” for years by old drag racers. The main reason for this name is they are a fluid driven device. Because of this, fluid level and condition are crucial to proper operation. Unfortunately, the 2010 Fusion is susceptible to fluid leaks from the driver’s side output shaft seal as identified in Technical Service Bulletin (TSB) 150079. Should this seal be leaking, the technician will have to inspect internal components per the TSB. Low fluid can wreak havoc on the internals of an automatic transmission, so I would strongly suggest you have the vehicle towed rather than try to drive it further. Once the technician is able to put the correct amount of fluid in the transmission, proper operation must be verified to ensure no further damage has been done. Provided the bushing, seal, and fluid are the only required parts, repair costs are fairly low but if the transmission sustained damage from fluid loss, the price may be exponentially higher. Contact YourMechanic for an estimate.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

What does the fuel gauge show?
The fuel gauge is located on the instrument panel, and tells you how full your fuel tank is. The gauge has an F (Full) on one end, and an E (Empty) on the other. Where the hand points to lets...
Automatic won't shift
It sounds like your shifter cable may have come loose. What happens over time the bushing for the the shifter cable that connects to the linkage on the transmission becomes worn and needs replacing because it will not stay connected....
Advice on buying a car with hail damage
Realize that hail damage is just pieces of ice falling down on the car and denting the heck out of everything. It may look horrible but the actual hail itself doesn't damage the car. So as long as it runs...
How long do I keep repairing a nineteen year old car?
This is the most common question a mechanic will get. At 19 years and 175,000 miles, there is really no way to predict what may go wrong next. Burning one quart of oil every 500 miles is not uncommon for...
The car stalled out and the battery and oil light came on
When a car has that many miles on it, it could be just about anything. The temptation is to go shooting in the dark and just start replacing parts until the car works again. That method can get very expensive,...
Loud popping noise where header and exhaust meet
Hi there - the "combustion bang" you hear taking place at the header flange probably indicates a leak at the donut gasket as you suspect. Unburned, or still burning, fuel catches some fresh oxygen at the flange, and ignites, producing...
Hazards work but turn signals don't. Replaced the circuit boards relay and bulbs. I have a 99 Grand Cherokee.
If the relay and fuses were replaced check to see if the flasher is working. If there is power to the flasher but nothing past the flasher, then the flasher needs replaced. If there is no power to the flasher...
Should I purchase non serviceable ball joints? 1995 lexus ls400 lower ball joint
The distinction of more relevance in purchasing a part such as a ball joint is "should one install the OEM (Lexus) part versus an aftermarket part?" If you want a long lasting ball joint that is guaranteed to fit your...
Check engine light came on and oil gauge at 0. But digital dash reading shows 58% life remaining. Oil level is good. Bad sensor?
Hi Megan. Thanks for contacting us today. If the check engine light has come on, this could indicate an oil pump failure, or oil sensor issue. In order to correctly diagnose the root issue, an on-site inspection would be required...

Related articles

A Buyer’s Guide to the 2010 Dodge Viper
2010 2010 was the last production year for the Dodge Viper before it took an extended leave of absence from the automaker’s lineup. It would debut once more in 2013. The 2010 Dodge Viper is a two-seat roadster (convertible) and...
The Best Used Cars to Buy If You're a Skier
When When summer ends, skiers start thinking about hitting the hills, and that means having to contend with winter driving conditions. Not just any vehicle is going to get the job done. We have evaluated several used ski-worthy vehicles, and...
The Best Used Cars to Buy for Senior Citizens
Everyone Everyone needs a way to get around. You need to get groceries, get to doctors’ appointments, visit with family and more. However, senior citizens have very different needs when it comes to buying a used car than other demographics....