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It means you had better do something quick about the person in the trunk!
And if there isn't anyone in the trunk...
There is not enough information about the nature of the nature, i.e., from the engine, front/rear, when it happens, etc etc, to be able to provide any useful response.
Oh yeah, it would also be most useful to include what kind of car you have.
Please create a new question with more insight to what/where/when the noise is occurring.
What else can I help you with?
When you break your car makes a knocking noise?
warped rotors , brake
Car makes loud knocking sound at high speeds?
A loud knocking noise in the motor of a car at high speeds is most likely the engine. There could be another issue with the transmission if the knocking only happens at high speeds.
What does it mean if your car makes a loud knocking noise when the wheel is turned?
Assuming it is front wheel or 4 wheel drive, it is worn CV or Constant Velocity Joints. :o)
What would cause a knocking noise when you use your brakes in the car?
Typically, a knocking noise when to use your brakes in the car is caused by your brakes wearing down. This means you need to get them checked out and repaired.
What causes a knocking sound in your car?
many many things, Loose lug nuts which lets wheel make knocking noise. Engine will make a knocking noise if it is really low on oil. Some timing belts make a knocking, slapping noise just before they break.These are just a few examples . Have someone ride in car with you as you duplcate the noise and see if they can determine which part of the vehicle it is coming from.
What is causeing a grinding and knocking noise when driving my car?
Its hard to say... do u know where the noise is coming from?
Why does my skyline 1994 turbo car make knocking sounds under hood when car is turned on?
When it makes that noise it is either because your reving it to high or just because your engine is goin
What causes a knocking noise under the hood of your car?
it could be your valves or your engine
What would cause a loud knocking noise in the front of the car when you accelerate?
you may have a rod knocking and you need to take it to a shop asap
When you turn your heat on in your car it makes a knocking sound?
You need to get your car checked.
What does it mean when a Tahoe car window makes a loud screaching noise?
You need to wash it.
What does it mean when on accelerating there's a loud knocking noise and the car car jolts jacked it up and manually spun the offside wheel and it locked up Its a ford cougar 2.5 v 6?
Usually a "knocking" or "ticking" noise when under acceleration means cheap fuel grade. Next time go for the gas with more octane such as supreme.
