Q: I have an 08 PT cruiser, when I hit the gas the RPMS move but the car does not accelerate. There is also this loud thumping noise

asked by on

When I hit the gas my car does not accelerate, the rpms go up but I don't move. The cars check engine light is on and is now constantly beeping and flashing. When the car finally decides to move there is a very loud clunking kind of noise from under the hood, and I mean it's loud! We also have issues starting the car. Also if I sit at a light I have to put the car in neutral or park and rev the engine so it doesn't die.

My car has 90400 miles.
My car has an automatic transmission.

Hi There, Generally, the check engine light comes on when something fairly serious is going on with the vehicle. This can happen for many different reasons such as a faulty mass air flow sensor, a faulty O2 sensor, a bad catalytic converter, bad spark plugs or spark plug wires and many other reasons. Due to the wide range of possibilities for the check engine light to come on, the best and most efficient way to narrow down the scope of what may be causing this is to have the vehicle hooked up to a scanning tool to download any potential fault codes that may have registered in the computer. This will allow a mechanic to determine more specifically what to look for in diagnosing your vehicle. I would recommend having an expert from YourMechanic come to your location to take a look at your vehicle to determine what may be causing your check engine light to come on.

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. I have an 08 PT cruiser, when I hit the gas the RPMS move but the car does not accelerate. There is also this loud thumping noise

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: Speedometer not working in a 2006 Chrysler Pacifica

The speedometer gets the vehicle's speed from the transmission. There are two speed sensors used to control shifting. Input speed and output speed. The output speed sensor is used for the speedometer. If it malfunctions, it will store a trouble...

Q: White smoke coming from engine and into the car from vents upon starting the car and then clears.

Hi there, Check the fuel system on your engine to see if the fuel pressure regulator is working properly. It seems that either the fuel pressure regulator is putting a higher pressure on the fuel injectors or the cylinders 2...

Q: Airplane sound while applying the brakes.

Hello, thank you for writing in. The noise you are hearing is very likely caused by the brake pads wearing down over time like they are designed to do. You are hearing the metal of the brake calipers rubbing on...

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.