Q: Car starts but idles rough and stalls

asked by on

Hi I recently took my car apart to change the timing chains but found out they were brand new so I put it back together but now the car starts but won’t stay alive. I can start it but it idles rough and when I give it gas it get louder and smells bad.

My car has 130000 miles.
My car has a manual transmission.

Hi There, A few different things will usually cause the vehicle to start and then die. A bad ignition coil can cause this if it is beginning to fail, resulting in intermittent starting problems. A dirty or faulty mass air flow sensor, may also cause this kind of reaction. The mass air flow sensor is a unit that measures the volume of air entering the motor and relays this information to the computer in order to cause the computer to make the proper air/fuel adjustments. A bad fuel pump or fuel pump relay may also cause this kind of starting issue as a result of the engine starving for fuel. I would suggest having a professional from YourMechanic come to your location to diagnose and inspect your vehicle to determine the proper solution to this.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Car starts but idles rough and stalls

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: fuel tank doesnt let me fill up

Hi there: The issue you're describing is actually more common than you might believe. It's typically caused by a faulty EVAP system component; most likely the EVAP vent solenoid that is responsible for relieving pressure and filtering harmful gas vapors...

Q: I installed a new radio yesterday and now my car won't start.

Hi there. The black wire behind the dash is your ground wire, which should have been connected to a bolt or screw that contacts the bare metal of the car's chassis. If this is not connected, the stereo will not...

Q: Q: Battery drainage

This sounds like potentially a short somewhere in your electrical system perhaps with an accessory or some component that is draining the battery while the car is not running. I would start testing accessories like electrical outlets, etc. to see...

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...
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...