Q: Loud sound from under hood

asked by on

I have a very loud sound coming from under the hood, almost like a belt or something is loose. I just had a tune-up, but the Check Engine light is coming on. When shifting gears, the indicator doesn't match what the car is actually doing. I recently got the transmission replaced and a tune-up. The Check Engine light still comes on and now the truck is making an extremely loud noise under the hood.

I’m guessing when you say that the "indicator doesn’t match what the gears are doing" that you mean the RPMs go up but the vehicle doesn’t accelerate. This is an indication that the transmission is slipping. If you just have the transmission replaced, I would take the vehicle back to whoever did the job so they can make it right. As for the noise under the hood, these engines are known for blowing the spark plugs out of the cylinder heads. This will make a very loud noise and also turn on the Check Engine Light. However, I wouldn’t be able to tell if this is the problem with your vehicle without inspecting it first hand. There are countless other reasons for engine noise as well. I suggest you have a qualified mechanic, such as one from YourMechanic, diagnose and repair your engine’s noise.

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. Loud sound from under hood

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: Hydraulic lift gate not working

The lift gate could have many problems that might cause it not to work. I would recommend taking the truck to the lift gate manufacturer or the dealership to have them look over the problem. They will have all the...

Q: I have a jeep Cherokee 89 and I replace the transmission lines but the new ones won't fit into the transmission the right clips ar

During different years the transmission lines had different types of ends that go into the radiator. If you have just nipples on the lines, then get the proper adapters from the parts store to match them and they will screw...

Q: Do I replace the lower radiator hose when installing a new radiator?

The lower radiator hose should be able to be removed by releasing the tab on the bottom of fitting and rotating the hose connection 45 degrees then pulling the hose off of the radiator connection. Once the hose is removed...

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 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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...