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for "What does this sound mean?" questions. Please describe where the noise is coming from, at least generally, and when it occurs, and what sort of sound it is (grating, squeaking, clatter, etc...).
3
votes
Rumbling noise related to road speed
That does sound very likely - it could be bearings, or as the volume increases when the wheel is turned it may be the universal joint.
Get your car propped up securely and spin the front wheels by ha …
16
votes
Accepted
What is the cause of belt squeak in the morning?
Most likely cause for this is that you have some condensation built up overnight on either the belt or one of the pulley wheels, and until this has evaporated the belt will be able to slip a little, c …
3
votes
Accepted
What causes the "pop" and "burble" noises on overrun?
One cause of pops is unburnt fuel hitting the exhaust manifold - many engines use fuel to cool the cylinder when you lift off, so this sprayed excess then burns as it hits hot metal in the exhaust.
T …
1
vote
2012 Mercedes c250
A ticking you can hear coming from outside, that increases in volume and frequency when you accelerate is likely to be something stuck in a tire ticking as it impacts the road surface. So I'd check al …
1
vote
Why does my 2003 Acura TL intermittently make humming sounds when the engine is off?
Have you had a look to see if any of the fans are spinning up when it makes this noise? …
2
votes
Popping / Clunking noise coming from rear of vehicle
It could also be the shocks - if the mounting points are loose, reversing with the brakes gently applied could cause them to rock backwards.
1
vote
Accepted
Strange liquid sloshing noise from gearbox / transmission
I would have sworn from where it sounded like the noise was coming from that it had to be gearbox. And I was embarrassingly wrong :-) …
2
votes
Noise in stereo that changes pitch with engine RPM
When converting the 12V DC from your battery to whatever voltage the inverter puts out, there are conversion steps internally to AC and back through switching the voltage.
The switching circuit frequ …
1
vote
Diagnose lag in acceleration
The two things are entirely unrelated:
1 - this is normal. When you press the accelerator, there are a number of things that have to happen - more fuel to the cylinders, spark timing change, valve ti …