V6 Petrol Noise When Warm
Posted: Sat Mar 30, 2024 6:05 pm
Hi all
as per subject I have a 99 V6 petrol with 100km.
Recently changed auxiliary belts and replaced one of the tensioner bearings as it felt rather dry.
Timing belt was changed a year before I purchased it. Im not sure if the timing belt pulleys were changed.
Engine runs really nice.
However, when the engine gets up to temperature I get a slight squealing noise when I put my foot on the accelerator.
This is mainly from around 1800 rpm in any gear.
Mainly occurs when driving in a straight line, sometimes if I am turning the noise isn't there.
I cant remember if the noise was there before I changed the belts as I serviced and changed belts etc straight away upon purchasing the vehicle.
On researching I am guessing it could be one of the following:
Water pump bearing
tensioner bearing
air con / alternator / steering pump bearing
belts need to settle in (cant really see this one)
Does anyone have any suggestions?
What is the best way to determine which of the above? It doesn't make the noise when stationary.
Although I heard it a couple of times if I had it in drive with all the brakes on and revved the engine.
So I cant get close to the components when its making the noise.
Is it likely to be one of the above and not timing belts pulleys?
Regards
Sean
as per subject I have a 99 V6 petrol with 100km.
Recently changed auxiliary belts and replaced one of the tensioner bearings as it felt rather dry.
Timing belt was changed a year before I purchased it. Im not sure if the timing belt pulleys were changed.
Engine runs really nice.
However, when the engine gets up to temperature I get a slight squealing noise when I put my foot on the accelerator.
This is mainly from around 1800 rpm in any gear.
Mainly occurs when driving in a straight line, sometimes if I am turning the noise isn't there.
I cant remember if the noise was there before I changed the belts as I serviced and changed belts etc straight away upon purchasing the vehicle.
On researching I am guessing it could be one of the following:
Water pump bearing
tensioner bearing
air con / alternator / steering pump bearing
belts need to settle in (cant really see this one)
Does anyone have any suggestions?
What is the best way to determine which of the above? It doesn't make the noise when stationary.
Although I heard it a couple of times if I had it in drive with all the brakes on and revved the engine.
So I cant get close to the components when its making the noise.
Is it likely to be one of the above and not timing belts pulleys?
Regards
Sean