Skip the auto shop - Our mechanics make house calls

Q: Car shakes at idle and low speed, shuts off at stops. 1993 Mazda MX-6

asked by on

In the last few years, the car has been having problems with idling and running at lower speeds. While the car idles or if it starts running at around 5 mph, it would start shaking. I also had the car shut off completely when I'm stopped in traffic. Once I couldn't restart it. After the mechanic had the distributor replaced, I no longer had problems starting the car. However, the car still shakes badly. Also, when the RPMs are surging, and I turn the AC on, they would stabilize and the car would get more power. What do you think might be the problem?

A: Hi there, thanks for writing in about your ...

Hi there, thanks for writing in about your 1993 Mazda MX-6. It sounds like the idle air control (IAC) motor is gunked up and either needs to be cleaned or replaced. Turning on the AC causes the IAC to change settings, which in your case, is improving idle quality. I recommend having a qualified professional, such as one from YourMechanic inspect the rough idle in person to verify the problem and help you move forward with repairs.

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!

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: Oil leak around distributor

This is common in these vehicles. There are two possibilities that come to mind. You could simply have a valve cover that is leaking. The repair is rather simple and requires the gasket to be replaced. The other possibility is...

Q: What can it be if its not the throttle body?

The throttle body is a common failure on Chrysler's, but there is another component that is key to the throttle system on your car. The gas pedal assembly has a sensor very similar to the throttle body and is an...

Q: Van overheats, but only at idle - 2004 GMC Savanna 3500

Hello. Assuming that you replaced the fan clutch and the fan is actually working, I think you are on the right track as far as the radiator being clogged. When the vehicle is not moving, it does not have the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...