Skip the auto shop - Our mechanics make house calls

Q: Car hard to start and hesitates

asked by on

My car is hard to start. When it does start, it idles high, and hesitates when the gas is pressed. It has two brand new fuel pumps and fuel filters, a new idle control valve, new spark plugs and wires, and new fuel injectors.

A: Thanks for asking. With all of the work tha...

Thanks for asking. With all of the work that has been done to the vehicle, I would recommend having a mechanic, such as one of our YourMechanic experts, inspect your starting issue. Your symptoms sound like an air/fuel metering concern where either too much air or fuel has entered the mixture. This can be caused by miscalculations through a faulted sensor, leaking seal or failing mechanical component.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: The engine makes a sound when you accelerate it

There are many things that can cause increased engine noise on acceleration. The crankshaft is at the bottom of the motor and if it were having problems, it would make noise all of the time, not just on acceleration. A...

Q: Hesitate on hard acceleration - 2002 Volkswagen Beetle

Hi there. Check for exhaust restriction and related to that condition of the oxygen sensors (bad sensors can cause catalytic converter plugging). Another possibility is fuel starvation so the output of the fuel pump has to be tested (pressure...

Q: Car electrical issues

The dash light may need to be replaced again. The light would need to be checked for a bad socket. The sunroof will need tested to see if the track is binding. The issue with your radio only working if...

Related articles

What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
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.