Skip the auto shop - Our mechanics make house calls

Q: My engine will start, but it idles rough and then stalls out.

asked by on

I got into an accident on the front end but didn't see any visible damage to the engine.

My car has 215000 miles.
My car has an automatic transmission.

Hi there. Getting into an accident, may have created a poor electrical connection in the engine management system. Starting the engine, having a rough idle and stalls could be any number of component failures. Identifying whether there is a loss of fuel or spark, would help to know the direction of repair.

A fuel pressure test and spark output test needs to be performed. To avoid any unnecessary repairs, I recommend your vehicle’s starting and stalling condition be diagnosed and repaired by a certified technician, such as one from YourMechanic.

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!
  1. Home
  2. Questions
  3. My engine will start, but it idles rough and then stalls out.

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: Buttons don't work after a minute or so

Hello and thank you for contacting YourMechanic. The security system is acting up and is becoming active cutting off circuits to the vehicle. The system is thinking that the car is being stolen. Remove the battery cables positive '+' and...

Q: What do i do if i put brake fluid in the power steering?

The fluids are incompatible and brake fluid could damage the pump and rack. If you haven't driven the car yet, or even turned it on, drain the reservoir by removing one of the lines from the bottom. Thoroughly and repeatedly...

Q: High idle after replacing fuel pump tps and air idle control valve

The first thing to do is to verify there are no vacuum leaks in the engine and verify the installation of the parts. Once this is done then disconnect the battery and then let sit for two minutes and reconnect...

Related articles

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...
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...