Skip the auto shop - Our mechanics make house calls

Q: Drive light turns off at speed over 100 mph

asked by on

When I'm driving at high speed, and reach over 100 mph, the drive light on the automatic transmission would turn off. At that point, the car would jump slightly. After several seconds, the drive light would turn on. I've had the computer diagnostics done and this hasn't shown ay problems at all. The mechanic had the speed sensor and air flow sensor replaced. Also, the ATF has been drained and replaced. I still experience the same issue. Do you have any suggestions?

A: Hi there, thanks for writing in about your ...

Hi there, thanks for writing in about your 2005 Mazda3 Sport. I think you may be feeling the transmission shift out of and back into high gear. It's also possible that you are feeling the torque convertor clutch disengage and re-engage. The bump might be more noticeable than it usually is due to the higher rpm and high speed that you are driving. If you want to have this checked by a certified mechanic, a technician from YourMechanic can come to your home or office to inspect your shifting problem.

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・Save up to 30%

Get a quote

What others are asking

Q: Car won't shift gears

Two scenarios: the leak developed as you were driving. It only takes the loss of 2 quarts before the transmission starts to act up. There is about 13 quarts of fluid though. The location of the leak needs to be...

Q: My car is jerking from 2nd to 3rd gear and downshifts. Will jerk a little

Hi, thanks for writing in. Your car has what is called a secondary shifter valve or solenoid valve that is operated or directed by the PCM (Powertrain Control Module) which is what controls the drivetrain and transmission. Code P0661 is...

Q: Bluetooth prevents accessing Destination Assist

Hello there, a few different faults can cause the bluetooth system to act up like this. The most common issues include a wiring fault, phone incompatibility, or bluetooth module failure. A qualified technician, such as one from YourMechanic, will be...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...