I've got a 2000 Taurus SE with vulcan engine.
Just during this winter, some squeaking/grinding/rattling noise came up under the hood on the passenger side.
I popped the hood, confirmed that the noise was from the vicinity of the drive belt, but couldn't tell which pulley or the belt.
I've installed a new water pump 4 months ago. I've also put on a new serpentine belt and a new tensioner pulley 2 weeks ago.
So I can safely say those are not the culprit?
I've had this type of noise during the past winters but it was mild. It would go away when the car warmed up.
This year is getting severe. It starts up when car is started.
Also, when I accelerate during driving, the frequency and intensity of noise increases! occasionally, when I stop the car on a red light, the noise goes away, but not always.
I tried to turn the AC
on, it didn't help.
I've read a december 2009 post on this forum. People suggested the catalyst converter. Is this part underneath the car or at the back of the car ?
People suggested loose AC
pulley bolts. I guess I can check that.
Is it possible the pulley is slipping due to cold weather ? Maybe I should change the belt again. which brand do you guys recommend ?
Some people suggest to put on a bit of soap water on the belt to see if noise goes away. I guess will check that too. the ridges on the main pulley seemed shiny. But I wonder that's normal.
Thanks for reading!