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?
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: Why is my expedition swaying under intial braking

It sounds more like you are having problems with one of the lower or upper control arm bushings allowing the wheel to shift to the rear when braking. If it is pulling more right, then the problem is in the...

Q: Robert I removed the output vss from a 2001 cherokee there bolt is stuck in the old sensor it has 2 different diagonal thread patt

If you are replacing the sensor and the bolt is stuck in the old sensor, just simply buy a new bolt. It is standard metric hardware and is probably an 8 mm bolt with a 1.25 thread pitch but simply...

Q: Q: Water leak under dashboard

I have seen this issue before. There can be two kinds of liquid leaking into your passenger floorboard area. Water or engine coolant. If it seems to happen when you have the A/C on, it is probably water. The A/C...

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...
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...
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.