Q: I have an engine vibration that starts when I am in idle.

asked by on

The engine vibration is most noticeable when in idle and in drive though it is still present when in neutral. Mechanical loads like the AC seemed to be making it worse but I noticed that with the AC off, though the vibration was lessened that other things would cause the vibration to get worse, like electrical loads. Turn on the headlights, run the windshield wipers, even using the power windows would cause the vibration to get as bad as when the AC was on. Once driving and reaching 1000 rpm or so the engine vibration either stopped or was no longer noticeable and the car drives fine. This first started after going to a Jiffy Lube and getting the oil changed and tires rotated and also getting the air filter replaced. The Mazda dealer checked the car out for vacuum leaks and found none and was not able to determine what the problem was. I replaced all 5 motor mounts because 3 were worn but that didn't make any difference. Two other service shops have failed to find the problem. Options?

My car has 87000 miles.
My car has an automatic transmission.

The engine vibration will need to be checked to see if it is worse in drive than it is in reverse. If the vibration is less apparent in reverse, then the motor mounts will need to be neutralized to center the motor mounts. If the vibration is even when the engine is in neutral, then the engine crankshaft damper is bad and causing the engine vibration. I recommend having a certified mechanic, such as one from YourMechanic, check to see if the motor mounts or the engine damper is at fault. They will be able to diagnose your engine vibration and ensure that the correct repairs are made on your vehicle.

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. I have an engine vibration that starts when I am in idle.

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: Joshua, I have a '02 Acura MDX with about 90K miles. It has always been garaged (since 2003). It's probably time to change the m

Since all the belts need to be removed to get to the timing belt I would recommend all accessory belts be replaced also. I would also recommend replacing the water pump and thermostat at the same time since the water...

Q: Oil light keeps coming on

You should have the oil pressure checked first. If the pressure is normal then replace the oil pressure switch. The switch controls the light if pressure is lost or if the sensor shorts internally to a ground which sets the...

Q: When turned to the "On" position, there is a clicking noise as if there's a dead battery.

Hello and thank you for contacting YourMechanic. Check the connections from the ignition switch to the starter. It seems to me like there is a short within the ignition switch making the starter engage when the ignition switch is selected...

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...
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...