Q: My car is making a grinding noise and smoking

asked by on

After starting car, there is a grinding, whirring sound from engine. After a few minutes it begins to smoke some. Shutting engine off, smoking stops immediately. There are no puddles of any kind on the ground

My car has 112678 miles.
My car has an automatic transmission.

Hi there - This sounds ominous. It’s difficult to tell from afar, but one culprit could be a failed alternator bearing, and the smoke is indicative of an electrical short, which is never a good thing. It could also be the accessory belt idler pulley. If it has seized, the smoke is coming from the belt itself, which is being forced to slide over a pulley that is no longer rotating. I would recommend having an inspection completed by a mobile, professional technician, such as one from YourMechanic, who can come to your location, diagnose your noise and smoke problems, give you an accurate assessment of damage, and provide a cost estimate for repairs.

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. My car is making a grinding noise and smoking

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: Radiator hose question

It is normal for the hoses to get hard and hot to the touch when warmed up. If vehicle is overheating then you may have a problem and would need to be tested to see if the system is operating...

Q: Is it possible to manually release a parking brake that has been engaged too far? 08 Honda Pilot

Looking at the foot operated pedal assembly, you will see a plastic wheel, or like mechanism possibly with metal spikes or steps, that locks the pedal when you depress it. That component is stuck or seized in place. If an...

Q: Replacing motor mounts

Hello and thank you for contacting YourMechanic. The engine mounts for the engine are the same, however, the transmission mounts are different for the FWD and AWD. There are a total of 4 mounts - one engine mount and 3...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...