Skip the auto shop - Our mechanics make house calls

Q: Car sputtering while idling.

asked by on

When the car is idling, it starts to sputter like it wants to stop running. I have to keep my foot on the brake and gas at the same time to minimize sputtering.

A: There could be a number of issues that can ...

There could be a number of issues that can cause this concern. If the issue only occurs after the engine has warmed up. A problem in the electronic throttle control actuator either in the motor or one of the sensors contained in the actuator assembly could be to blame. A faulty mass airflow sensor or oxygen sensor could be incorrectly calculating the air/fuel mixture. Dirty or clogged fuel injectors causing fuel puddling instead of atomization can cause a stumble at idle. Low fuel volume could also be an issue or a faulty engine computer if the issue happens even on a cold startup. The first step would be to read out the fault memory in the engine computer to see if there are any faults stored and then to look at the engine computer operating parameters with a scan tool. You may want to enlist the help of a mechanic, like one from YourMechanic, to use a scan tool to look at faults and engine operating parameters in order to get the diagnosis moving in the right direction and ultimately the final repair.

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・Save up to 30%

Get a quote

What others are asking

Q: why am i loosing power, spits and sputters then is fine.

Hello. It sounds like you may have several different problems with this vehicle. The starting issue sounds like you may have a failure in the fuse box or in the starter relay, most of the time though it is caused...

Q: What parking tips are suggested for safety?

Parking seems like such a simple thing, but it can actually be more complex (and more dangerous) than most drivers assume. Here are some important tips to help you do it safely and correctly: Never park over flammable objects...

Q: Wheel locked up

Hi. The parking brake system on the Maxima uses 3 cables. One control cable from the handle, and one cable going to each rear wheel brake caliper. A visible inspection of both calipers needs to be administered with both the...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...
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.