Skip the auto shop - Our mechanics make house calls

Q: Why is my transmission slipping?

asked by on

recently transmission is slipping at 40+mph, runs through other gears fine. trans fluid is full. Serviced on time, no previous problems, strong running engine. please advise? Cannot understand always cared for, never beat on. Will I lose the gear or be stranded roadside?

My car has 184000 miles.
My car has an automatic transmission.

This may be a sign of a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car’s computer activates a transmission solenoid, which directs transmission fluid into the valve body to engage the correct gear. When this is faulty or not working properly, this can cause a delay in gear shifting or in some cases cause the car to not shift at all. I would recommend having an expert from YourMechanic come to your location to take the car for a test drive to more specifically determine the cause for this.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
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

Get a quote

What others are asking

Q: Can't reverse

I will assume the transmission does transfer power in the other drive gears. The electronically controlled transmission may have a failed solenoid that directs fluid pressure to the reverse gear assembly. In most cases, the transmission is removed and overhauled...

Q: My 2001 BMW X5 won't start. I think it is due to power loss

Hello, the first questions to answer are "Are any problem codes set? Is your Check Engine light on?". Based on your observation of "no power", and your extended mileage, there are several problems likely that would result in "no power":...

Q: Loud noise

Hi there: When it's really cold outside, pliable components like serpentine and drive belts tend to become stiff and harder than usual. In some cases, the loud noise can be caused by a belt that is loose or too tight....

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...