Q: Car in park. Rev the engine. Grinding noise with smoke and burnt smell

asked by on

My car was on and warming up when I decided to rev the engine. I got up to 3000 RPM and heard a grinding noise. I stopped revving. I did it one more time and at about 3000 RPM heard it again - this time accompanied with smoke and a smell. Stopped revving. Looked in the engine so no leaks and heard or saw nothing. Took it for a test drive and had zero issues. What caused that grinding and should I be concerned?

My car has 144000 miles.
My car has an automatic transmission.

What you are describing sounds like a faulty starter solenoid. A faulty starter solenoid will generally produce a clicking sound when turning the key. The starter solenoid is located on the starter and has internal electrical contacts that transmit electricity to the starter. As electricity is supplied to the starter a small gear comes out and engages the flywheel to spin the engine over as you turn the key. When this fails, it may cause a clicking sound and will not allow the starter to engage the flywheel when you turn the key. In some cases if the starter solenoid is faulty it may cause the starter gear to remain out too long which can cause the starter gear to grind against the flywheel after the engine has started. This is noticeable by a very loud grinding sound. I would recommend having a professional from YourMechanic come to your location to diagnose and inspect your vehicle.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. Car in park. Rev the engine. Grinding noise with smoke and burnt smell

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: Hello I'm planning on buying this 2005 Acura MDX but one of the issue on the car is that it needs the coil pack replaced. Could yo

The vehicle you are looking at has six individual coils (aka, "coil packs", or "coil on plug") one for each of the six spark plugs on the engine. These are frankly mundane devices and if only one is faulty, if...

Q: Steering wheel makes sound like it is rolling over something below steering colum. even if just slightly moved.

What you are describing sounds like a problem with the rack and pinion gears. The rack and pinion gear set does two things: It converts the rotational motion of the steering wheel into the linear motion needed to turn the...

Q: What sort of brake fluid should I use?

Your brake system is hydraulic – it uses fluid pressure to operate. If the fluid is low, there’s a chance that you won’t have the stopping power you need. Of course, you also have to know the right type of...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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 Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.