Skip the auto shop - Our mechanics make house calls

Q: I have no acceleration

asked by on

my car is not accelerating.

The 4.6 engine is a generally a very dependable engine. The lack of acceleration in this engine may be cause by be a few different sensors being faulty or the fuel system malfunctioning. The first thing I would suggest is to have the computer scanned for codes to see if the mass air flow sensor or the throttle position sensor are malfunctioning. The next step would be to see if the fuel pump is providing enough pressure and the flow is not being restricted by a clogged fuel filter. I recommend having a certified mechanic, such as one from YourMechanic, to come and check your acceleration issue for you and give you a diagnosis.

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

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: How to change the high pressure hose on Cadillac Deville DHS 2001?

Hi there. You would be very well served to search online for a 2001 Cadillac DeVille service and repair manual, which will give you the steps for completing this and virtually any other repair you'll complete on your car. ...

Q: What can happen without using my fuel rail pressure sensor?

The fuel rail pressure sensor is used by the computer to regulate the fuel pressure by regulating the voltage to the fuel pump to slow it down or speed it up. If the pressure switch is bad then the computer...

Q: Is this a power steering problem?

It sounds like you may have a power steering leak, a failing pump or potentially a steering rack that may need to be replaced. When the power steering pump is low on fluid or damaged and needing to be replaced,...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...