Mazda 3 Rough Idle → Causes & Diagnosis

If you own a Mazda 3 and it’s idling rough, you may be feeling frustrated. In this article, we’ll look at some of the most common causes of a rough idle in the 3 and how to fix the problem.  The most common cause of a rough idle is misfiring. What an Engine Needs to … Read more

Mazda 3: ABS Light Meaning, Diagnosis, + How to Fix

Your Mazda 3’s ABS Light comes on when it fails a self-diagnostic cycle.  When on, it indicates that your car does not have Anti-Lock brakes and the safety they provide. Your 3’s ABS system uses a system of sensors to determine wheel speed when braking.  If one of the wheels starts to lock up, it’ll … Read more

Mazda 3:  Reduced Engine Power Diagnosis

  One of the most annoying things that can happen when we are driving our vehicles is when we get the reduced engine power light.  Most of the time, reduced engine power doesn’t make commuting home possible since the max speed your Mazda 3 will reach is not going to be enough to keep you … Read more

Mazda 3: Black Exhaust Smoke → Symptoms & Diagnosis

Black smoke coming from your Mazda 3’s exhaust is definitely a concerning problem.  Different colored exhaust can mean different things.  Black smoke is typically of greater concern than white smoke. Dark black smoke coming from the exhaust of your 3 indicates that there could be a serious engine problem, and indicates that the air/fuel mixture … Read more

Mazda 3 Engine Knocking Causes + How to Fix

One of the most alarming sounds you can hear from your Mazda 3 is the engine knocking. Unfortunately, an engine knock can be a sign of significant engine problems. The first thing you should do is check your 3’s oil. If it’s low, fill it up. If it appears frothy, there may be coolant getting into … Read more

Mazda 3: Bad MAF Sensor → Symptoms & Causes

  The mass airflow sensor (commonly abbreviated to MAF) is one of the most important engine management sensors.  A bad mass airflow sensor can leave your Mazda 3’s engine running rough, or even inoperable. A MAF sensor measures the density of the air entering the intake manifold.  It passes this information onto your 3’s ECU. … Read more

Mazda 3 Speedometer Not Working: Causes + How to Fix

One of the most inconvenient things that can happen to your Mazda 3 is when the speedometer stops working.  You don’t realize how much you look at the thing until it’s always sitting at 0 MPH while driving down the road.   If your car’s speedometer is not working, it’s usually caused by an issue with … Read more

Mazda 3 AC Not Cooling:  Why and How to Fix

One of the most inconvenient vehicular problems is when the A/C won’t blow cold air. If your Mazda 3 isn’t keeping you cool, we’ve outlined some of the most common reasons why this might be happening. It is entirely possible for your 3’s heater to work just fine even when the air conditioner is blowing … Read more

Mazda 3 Bad Fuel Injector: Symptoms, Diagnosis, How to Fix

Fuel injectors can go the life of a modern vehicle with little to no trouble at all.  That being said, bad fuel injectors are one of the more common issues that happen to any vehicle (Mazda 3 included).   There’s always more than one fuel injector, and even one going bad is enough to make … Read more

Mazda 3: Brakes Grinding  → Causes & Diagnosis

  One of the most common problems with the Mazda 3 (or any vehicle) is when the brakes are grinding.  The number one cause of grinding brakes is going to be brake pads that have worn all of their friction material off.  But, there are other causes as well. Your Mazda 3 is always going … Read more