Q: Check engine light and the engine is making a humming noise.

asked by on

My check engine light came on a month ago. I had it checked out by an auto part store that used the thing you plug into the spot under the steering wheel. They said it gave an evaporative cooling message. I took it in for an oil change with hopes they could look at the engine. They said I would have to make an appt. Since then my engine started to make a humming noise two days ago. Usually only when it's idling. Then tonight I get an a/c is not avaliable due to engine temperature warning on the display. I have a couple questions. Is it safe to drive for one more day till I have the appointment? Is it safe to drive to the appointment? Do you have any idea as to what may be the issue? And do you think a comprehensive warranty would cover the issue? Thanks for your time!

My car has 78000 miles.
My car has an automatic transmission.

The humming noise could be the air filter being dirty, the drive belt slipping, or the air conditioning clutch is slipping. It is safe to drive your vehicle to the appointment as long as there is no smells or loud noises other than the humming noise. Only a shop or a certified technician can give out a warranty for the replacement parts.

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. Check engine light and the engine is making a humming noise.

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: My car is hesitating / jerking at speed intervals of 20 mph, 30 mph, 35 mph and 40 mph.

This may be a sign of a dirty or failing mass air flow sensor. The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed with fuel prior to being injected...

Q: Getting random misfire code.

Your Chrysler sets a P0300 random or multiple misfire code when more than a 1.8% misfire rate is measured during two trips. Countless issues can set this code, from a vacuum leak to a bad coil pack. Your engine is...

Q: AC light on dash

GM has a TSB out for this issue. If the system is full, then the negative battery terminal needs to be disconnected to reset the climate control computer. If the system does not work after this, then gauges will need...

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.