Help. constant high pitched sound from engine bay

[Bornno1]

Noticed a very high pitched constant sound coming from engine bay. Cant trace where the sound is coming from. Is it the belt tensioner or bearings?? Mileage is 70k havent change belts yet. Anyone experienced before? Ride is 06 Vios

[Zniper]

timing belt... try to apply some lubricant to it...

[Chiangauto]

Noticed a very high pitched constant sound coming from engine bay. Cant trace where the sound is coming from. Is it the belt tensioner or bearings?? Mileage is 70k havent change belts yet. Anyone experienced before? Ride is 06 Vios

 

I would suggest you change your timing belt at 60k.Maybe you need mechanic to check on it.because belt tensioner also can make noise.and you need good oil treatment for your car.hope it help.

 

[Amsyl]

If it is the timing, your engine will not be running. Most like, the belts turning your aircon compressor & alternator or a worn bearing is causing the sound. have it retensioned or change or spray some wd40 on the bearing.

[Opel17]

The likely cause is compressor/alternator belt [V-belt construction] slipping, which is due to worn out.

Unlikely to be due to timing belt, which is a toothed belt construction.

2nd hand car dealers usually spray WD40 or oil to "solve the problem", only enhance the slipping and remove the noise.

Tensioning the belt further may temporary resolve this noise problem, but may cause belt breakage subsequently.

Advisable to change the belt.

 

[Seaweed]

open the bonnet...you should be able to rough tell where the sound is coming from mah ?? at least narrow down to a area?

[Bornno1]

i open bonnet and seems to be coming from alternator area, but cant pinpoint. Its very high pitched. My car no timing belt only chain. I suspect is the belt tensioner or the alternator bearings kaput liao. But everything is running fine on my car, volt is ard 14.2 when idling. Air con still cold. The noise only can be heard outside but not in car. Sianz irritating :(

[Byond]

its the fan belt?

how long u never changed?

i changed mine at 90k km....

cost less than 80$ for my mazda2...

 

 

[Bornno1]

all belts havent change yet. mileage reaching 80k. doesn't sound like slipping noise, sounds more like electrical high pitched sound.

[Furrynadz]

u already answered your own question last night

[Byond]

its the belt then...

go to a ws to have it changed

the fan belt is recommended to change at 80k to 100k km

[Octopus]

Noticed a very high pitched constant sound coming from engine bay. Cant trace where the sound is coming from. Is it the belt tensioner or bearings?? Mileage is 70k havent change belts yet. Anyone experienced before? Ride is 06 Vios

 

Temporary measure can use silicon grease or silicon spray or dia-electric grease on your belts inner surface, should quiet the belts. Silicon will condition the rubber component in belts, making it slightly softer. DO NOT use WD40 which will damage belts.