Q: My car won't go faster than 70 mph

asked by on October 31, 2016

When I'm on the highway I put in fifth gear and try to floor it but the car like jumps and stays at 70 mph no check engine light I replaced the 02 sensor Cause the check engine light went on before but it didn't seem to do anything please help

My car has 152000 miles.
My car has a manual transmission.

This is a common sign of a dirty or failing mass air flow sensor. The mass air flow sensor is a unit that monitors the air intake as it is mixed with fuel prior to being supplied to the motor. When this is not working properly, this can cause the motor to hesitate and jerk a bit as you describe as a result of the unbalanced air/fuel mixture provided to the motor.

I would recommend having a professional mechanic, such as one from YourMechanic, come to your location to determine why the car is jerking at high speeds and suggest any needed repairs.

Was this answer helpful?
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

Idle fluctuates and then stalls.

Hi There, It sounds like you may have a vacuum leak or potentially a dirty or faulty idle control valve. High idle speeds or in some cases rough idle, stalling and hissing sounds are common signs of a vacuum leak....

05 acura tl automatic will not accelerate and move. rpm going wild and revs. what is the cause?

The first thing to do is to see if the transmission fluid is full? If it is full, then you may have an internal transmission problem and will need further diagnosis to determine the cause by a transmission mechanic like...

Rattling sound coming from car while idling

Hi, many others have reported similar issues. There is a metal heat shield on the exhaust manifold that can get bent or loose over time. I would recommend getting a certified technician to inspect the exhaust system to see if...

Related articles

How Long Does a Throttle Controller Last?
In In order for your accelerator pedal to actually work as you push down on it, it needs to be connected to the throttle. In older model vehicles there was a mechanical link that connected the throttle body and the...
2007 Nissan Versa vs. 2007 Saturn Ion: Which One Should I Buy?
Compact cars as a class are generally meant to be commuter vehicles: with excellent gas mileage, an entry-level price point, and decent safety ratings for those who are on the road the majority of their time. These cars also make...
Symptoms of Bad or Failing Spark Plugs
Common signs of faulty spark plugs include slow acceleration, loss of power, poor fuel economy, engine misfires, and difficulty starting the car.