Q: Rough idle and intermittent engine light on

asked by on

Could this be the purge valve, the engine management light is going on and off

My car has 71000 miles.
My car has a manual transmission.

Hello there, many faults can cause a rough idle and the Check Engine Light to be on with your 2007 Mazda 3.

The first course of action would be to check what code is stored in the ECU. This code will help determine what direction to go with diagnosis.

Some common causes of a rough idle are the spark plugs, coils, vacuum leak, oxygen sensors, exhaust leak, fuel pump, MAF sensor, or a wiring harness fault.

A qualified technician such as one from YourMechanic will be able to diagnose your rough idle and make any repairs required to resolve the issue.

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. Rough idle and intermittent engine light on

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: Q: Powertrain warning lamp

In this case you will need to have the computer scanned to retrieve the codes that are stored. The codes will indicate the exact problem areas. Have the trouble codes and warning light diagnosed by a certified technician, such as...

Q: Car shaking and stalling while driving.

Hello, the place to start would be to have your check engine light diagnosed. I would recommend getting the aid of a mechanic to come out and connect a scanner to your vehicle and see what codes are present and...

Q: I need to know a thermostat on a B4000 I have a thermostat is star brand new thermostat I need to know the number on it

Hi there. I'm not quite sure how we can help you here. If you are looking to have one of our professional mobile mechanics complete a thermostat replacement on your Mazda B4000, you can click this link and enter your...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...