test_accou

Hello all,

I have a 2008 is250 63K miles. Recently the engine makes weird noise (cold or hot engine temperature, no different). The car performance seems to be normal. Engine oil level is normal, NO leaking coolant fluid. Please help identify what is making noise?

video attach below:

https://www.youtube.com/watch?v=d99y...ature=youtu.be

Thanks in advance!

PAVGR

iTrader: (2)

I think it's the water pump that needs to be replaced

2GSKaizen

iTrader: (1)

I would also check the Harmonic Balancer/ Crank pulley. It def sounds like its something being driven on the serpentine belt/or possibly cam belt. Maybe a bad bearing on an idler puller?

Zmon

iTrader: (2)

+1 on the water pump. It def sounds like the bearing went bad.

lexuspaaji

yeah pretty sure its the water pump, I had the same noise

test_accou

Thanks all for your suggestions, most pointed to the waterpump. I will order the waterpump and plan to DIY.

g1itchgsr

iTrader: (5)

I would check the other easy to access bearings as well before you order the water pump. I thought my water pump was bad but my mechanic used the "screwdriver" method (google it) to ID that was idler pully bearing not my water pump.

test_accou

Thanks, I will check!

flektone

iTrader: (1)

Any update on this? Im getting that same growling noise but not that pinging. While its not leaking I was to told my water pump is going bad. The car has 77k and I know that its right about time to replace the pump.

Toxicxk23

110% water pump. Had the same exact issue before. Update us with your repair!

flektone

iTrader: (1)

Should the car not be driven at if the water pump is failing and making this noise?

Toxicxk23

I would fix it as soon as possible. If the water pump completely fails and doesn't push coolant through you could end up really damaging your engine. Not a risk worth taking IMO.

flektone

iTrader: (1)

ok thanks im taking the car in this week. I have another car to use to drive around town, i wont risk it.

test_accou

Replace the water pump and everything back to normal. Thank all for your suggestions!

Gville350

iTrader: (10)

Glad you're all fixed up!