CCC8 Posted November 21, 2016 Posted November 21, 2016 Our morning school run is approximately 1 mile return. By the time I get home and switch off the ignition there is a high pitched whining noise coming from the front of the car. I've pulled the bonnet but can't source it. It happens at various times of the day. No message appearing in the dash to indicate a fault. Brakes work as normal and I've pumped the pedal to no avail (I was thinking some kind of hydraulic or vacuum issue). It started a fortnight ago and is now happening frequently. I'm not sure if there's any connection but just today I've noticed a bit of "kangarooing" on acceleration. It's a similar jerkiness to an old 1960s Lambretta (restored) I rode and that proved to be a carburettor problem? I'm booked in with my mechanic on Friday (25/11/16) to check a few things prior to MOT on Monday. If anyone has any ideas what is causing the noise and/or jerky acceleration I would grateful if you would tell me as it would allow me to have it sorted prior to the test. Thanks for reading. Quote
paul.h Posted November 21, 2016 Posted November 21, 2016 Does it make the noise with the engine running but the car not moving and does the noise change with engine speed rather than road speed when the car is moving ? High pitched whining noises could be from things such as an air leak on any of the hoses or a bearing/pulley that is failing such as on the timing belt or alternator belt or possibly a wheel bearing. It might pay you to see your mechanic before Friday to give time to sort the problem before the MOT. Quote
Simple Posted November 22, 2016 Posted November 22, 2016 (edited) You are probably talking about this: https://www.youtube.com/watch?v=qcfPMQw3toU and https://www.youtube.com/watch?v=PK-OcMLsxQgIf so, you will probably hear more of it and for a bit longer, since the weather is getting colder, you will also notice it if you start the car (from cold) for a minute and switch it off, you may also smell some diesel fumes while the sound is on. Edited November 22, 2016 by Simple Quote
CCC8 Posted November 22, 2016 Author Posted November 22, 2016 Thank you for such prompt replies. I had the timing belt etc changed just several weeks ago. The noise doesn't change with engine speed and is barely audible when on the move. The water heater in the YouTube clip is the same noise my car makes. Short journey on a cold morning means it's still working when I arrive home. I will observe over the next wee while and confirm or otherwise. Thank you again. Quote
Simple Posted November 22, 2016 Posted November 22, 2016 Our morning school run is approximately 1 mile return. By the time I get home and switch off the ignition there is a high pitched whining noise coming from the front of the car. I've pulled the bonnet but can't source it.You suggested that the noise is active while the engine is switched off. Hence, it cannot be any engine moving part like belts etc..!! View attached file for location.. C8_Z-C_d_E.pdf Quote
coastline taxis Posted November 23, 2016 Posted November 23, 2016 its probally one of the vacum solenoids that is designed to run on after the engine is swithced off. they make some wierd noises when they go wrong. start with the turbo solenoid Quote
CCC8 Posted December 8, 2016 Author Posted December 8, 2016 Our morning school run is approximately 1 mile return. By the time I get home and switch off the ignition there is a high pitched whining noise coming from the front of the car. I've pulled the bonnet but can't source it. You suggested that the noise is active while the engine is switched off. Hence, it cannot be any engine moving part like belts etc..!! View attached file for location..Flew throughout the MOT. Mechanic suggests the whine IS coming from the heater but he doesn't think it's broken, it's meant to make that noise. When I suggested that there is no need for the heater to kick in when weather is warmer he said that it's required to blow heat into the rear compartment when I switch on the rear heater. I'm not so sure however the heat is working and there seems to be nothing else wrong at this stage. Quote
Simple Posted December 10, 2016 Posted December 10, 2016 The heater makes a distant vacuum cleaner sound, this is how it operates and you needn't worry about it. Congratulations for the MOT pass. Quote
CCC8 Posted December 12, 2016 Author Posted December 12, 2016 The heater makes a distant vacuum cleaner sound, this is how it operates and you needn't worry about it. Congratulations for the MOT pass.Thank you Quote
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