Skip the auto shop - Our mechanics make house calls

Q: I have no acceleration

asked by on

my car is not accelerating.

A: The 4.6 engine is a generally a very depend...

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

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: My truck is overheating I changed the thermostat and why is it still overheating?

If you changed the radiator and thermostat and still overheats due to no coolant circulation then you have a water pump that is not circulating the coolant. The pump fins can get worn off, unable to pump and circulate the...

Q: To shift into drive gear, have to rev engine

Hi there, thanks for writing in about your 1982 Ford F-100. The new modulators may be to blame if the parts are not exactly like the original one and made somewhat the same way. This can lead to improper performance....

Q: Car has hissing sound when initially accelerating

Hi there, thanks for writing in about your 2006 Porsche Cayman. Generally, a hissing noise will come from a leaking vacuum source or something like an exhaust manifold gasket. The vacuum leak will cause some performance issues as the engine...

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.