Skip the auto shop - Our mechanics make house calls

Q: Transmission

asked by on

When i put my car in drive i can only get over 15 mph then when i put it in 3rd i can only get to 40 mph what do that mean
My car has an automatic transmission.

A: You are having a computer sensor failure th...

You are having a computer sensor failure that is causing the engine control module (ECM) to go into failure management mode which limits the throttle opening. This will happen until the problem is fixed. You will need to have the ECM scanned to check for and diagnose any codes in computer memory. If you need help with this, a technician from YourMechanic can inspect your acceleration and transmission issue and recommend the appropriate repairs to have this fixed.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Skipping, light rough idle, & smoking

Hi and thanks for contacting YourMechanic. Depending on what color the smoke is will determine what is happening with the engine. If there is heavy black smoke, then there is too much fuel in the cylinders and the fuel is...

Q: Car cranks but won't start.

Check the main fuse to the engine and see if its burned. If the fuse is good, then check the wiring under the dashboard and see if there is anything loose or damaged. A loose or damaged wire will cause...

Q: 3 codes appeared

We need to the code numbers to help you out with your question. I'd suggest geting some assistance from a qualified mechanic who has the tools and experience to diagnose your trouble codes. These codes will help pinpoint the problem...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.