Q: Car is revving high constantly with loud noise and makes the engine sluggish

asked by on

My car used to run fine, but recently it started revving high. The car doesn't rev only at startup and then returns to normal--it is revving constantly very high. At each stop light, it would go to high RPMs of around 2000 and then it would keep revving, while the engine seems to lose power. Then, I would slowly shift gears, but as soon as I gave it gas, it would rev high again and make loud noises. Everything else seems fine and there are no check engine light or any other warning lights on the dashboard. What is causing this revving?

The most common cause of this revving is either a stuck throttle or the mass airflow (MAF) sensor. This fault should be addressed as soon as possible for normal operation as this revving can become dangerous if the vehicle is allowed to accelerate unintentionally. The qualified technicians at YourMechanic can perform a diagnostic inspection of your loss of power issue.

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
  1. Home
  2. Questions
  3. Car is revving high constantly with loud noise and makes the engine sluggish

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: Engine noise at idling, Check Engine Light on

Hello. It is common for these cars to have problems with the camshaft gears making noise and causing the Engine Light to come on. If the problem persists, then damage to the motor is possible. It would be a good...

Q: Car shuts off when stopped or going slow

There are many reasons why a vehicle may stall at a stop or at low RPM. I would recommend having your vehicle's stalling issue inspected at by a knowledgable technician, such as one from YourMechanic, to determine the exact nature...

Q: Shift cable broken

Unfortunately, the most common problem to that symptom is the automatic transmission needs replacing according to our database. I would recommend taking the car to a transmission specialist and have them look at the vehicle.

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...
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.