Skip the auto shop - Our mechanics make house calls

Q: squeaking

asked by on

hi my vauhall astra mk4 sri 2003 has started making a high pitch squeaking noise when driven past 3000 rpm it is also lacking power I have been to numerous garages and they have all said different things can anyone please help me thank you

My car has 131000 miles.
My car has a manual transmission.

Hi there, thanks for writing in.

To be perfectly honest, I have never dealt with that particular car, as we don’t have Vauxhall in the US. Since this is an SRI model, it seems to be a turbocharged model, and common problems on any turbo cars with these symptoms are either a boost leak or a problem with the turbocharger. The compressor wheel on your turbo is spinning very fast, and when the bearings start to wear out, they can make the turbo very noisy. Also a boost leak will create a large whistling noise when there is pressure in the system as it rushes out of wherever it’s leaking from. General squealing noises could be caused by loose belts, though that wouldn’t generally make a low power situation unless it was a supercharged car, which uses a belt to drive the supercharger. I would recommend having this diagnosis verified by a qualified technician, such as one from YourMechanic if you happen to be in the United States.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: P0414 code

Hi There, Code P0414 relates to the vehicle's secondary air injection system which is a system that pumps air into the car's exhaust system to reduce emissions by way of accelerating the catalyst in the catalytic converter. When the ECM...

Q: Car won't start and doesn't have normal power

Thanks for writing in today about the issue with your Saturn. Without being there to physically inspect the car, it's very hard to give you a precise diagnosis, but one common problem that occurs when people install accessory items like...

Q: Turn signals and brake light power outages

It sounds like you have a short somewhere that a wiring harness has wires in it for both the brake lights and the turn signals. I would recommend having these circuits professionally tested with a digital multimeter to determine if...

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 to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...