aznKewlguy

iTrader: (5)

I searched and I found this video...


I'm experiencing the exact same problem with my car. Anyone experience this noise and how to fix it'?

ibidu1

iTrader: (1)

Could be an idler bearing, water pump, and slipping serpentine belt.

I would grab a bolt of wd40 with the nozzle tube straw squirt a little on the idler bearing first, but try not to get any on the serpentine belt. If the noise doesnt go away squirt some on the belt, and the noise is still there then it could be a water pump.

chase350

iTrader: (2)

Don't use wd40 it will cause dirt to sick to the pulleys. Use slipit in a can best lube u can buy!

Machog

Check out the water pump thread elsewhere on this forum, IS's have a propensity for water pumps to fail.

Machog

DaveHash

Check water pump, alternator, idle pulley and then your tensioner pulley. Usually the order of how things go in these cars

aznKewlguy

iTrader: (5)

Thanks guy.. I'll have it checked out this week. Hope it's not an expensive fix!

DaveXIX

Yeah I agree with the water pump thing. If the dealer recommends to change the water pump do not procrastinate on that at all. I almost payed the price the hard way for doing that.

Gville350

iTrader: (10)

I agree...more than likely its a water pump. Have you checked the car's previous service history? Had the water pump been replaced previously? What mileage are you at?

carlos

iTrader: (1)

Please report back with what is causing that noise once you figure it out. I have the same exact noise. I am at 70,777 miles as of today. It started about 3000 miles ago. I am on the original pump.

carlos

iTrader: (1)

Any updates?

Alias

iTrader: (2)

I have this exact same problem, it gets worse when I turn on the ac. Please do update.

ibidu1

iTrader: (1)

If yours gets worst when the AC turns on more likely your serpentine belt is worn out and causing the belt to slip and squeal. Replace your belt!

jtsimaras

I know old post , I have the same issue and I think it is definitely the belt. If I spray some water on belt it disappears for about 5 seconds. I'm going to replace belt and report back. I thought it could be alternator but highly unlikely since my car only has 27,000 miles. Hope it is the belt

BBBsti LTD

I have 97,000 miles in my IS250. The car is making the same squeaking noise. It is completely stock with no replacement parts other than pistons recall. I have been keeping an eye in the water pump since they fail quite common but I can't see any evidence of coolant leaking. I think the noise found be a pulley bearing. We will see.