[e46ian]

Hello all, I was just wondering if anyone would know what else this squeak could possibly be. For some background information, every pulley and tensioner has been replaced; alternator is brand new, water pump and pulley are brand new, the belt is new, the power steering pump and pulley are also brand new, and I replaced my thermostat/housing as well. In the past 5,000 miles, my touring has drank 3/4 of the coolant in my resevoir as well.

Here’s a link to the sound:

Any thoughts are appreciated!

 

[Bali]

Use a mechanic’s stethoscope to find the noise source.

Mechanics Stethoscope

Amazing deals on this Mechanics Stethoscope at Harbor Freight. Quality tools & low prices.

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[kaboom28]

If you have lost 3/4 of your expansion tank coolant, you need to fix that leak. Have you checked the health of your 2 hard coolant pipes located right under the intake manifold? Do you have a blown head gasket? Any evidence of dried coolant anywhere?

 

[e46ian]

If you have lost 3/4 of your expansion tank coolant, you need to fix that leak. Have you checked the health of your 2 hard coolant pipes located right under the intake manifold? Do you have a blown head gasket? Any evidence of dried coolant anywhere?

I don’t believe I have a blown head gasket, as I know compression is good across the board. I did notice dried coolant on my expansion tank, but I don’t know where from. All the hoses in that general area are new and they are all on correctly. Are those coolant hardlines you’re talking about serviceable without taking the IM off?

 

[Sapote]

I don’t believe I have a blown head gasket, as I know compression is good across the board

Good compression doesn't mean no coolant leaking into combustion at the right conditions.

 

[Sapote]

I was just wondering if anyone would know what else this squeak could possibly be

Sounds like the belt noise.
Remove both belts and run engine again for a 1-2 minutes test. I bet it will be quiet.

 

[kaboom28]

I don’t believe I have a blown head gasket, as I know compression is good across the board. I did notice dried coolant on my expansion tank, but I don’t know where from. All the hoses in that general area are new and they are all on correctly. Are those coolant hardlines you’re talking about serviceable without taking the IM off?

Replacing the two hard coolant pipes require that you remove the intake manifold, unfortunately.

 

[TobyB]

Guessing based on the information available, your 'new' alternator isn't quite aligned with the rest of the belt train.

They're less and less precise these days.

Could be the water pump, too, as that flange is pressed on, and They're less and less precise these days..

t

 

[325TI_Compact]

I have bought aftermarket WP and PS pulley.
They are quite different in fitting compare to OEM ones.

 

[///Mark_D]

Looks like nobody mentioned the A/C compressor clutch yet. Try removing just that belt and leave the alternator / water pump / power steering pump belt installed to see if the noise goes away. If not, then pull the other belt off too and see if it goes away then.

 

[e46ian]

Guessing based on the information available, your 'new' alternator isn't quite aligned with the rest of the belt train.

They're less and less precise these days.

Could be the water pump, too, as that flange is pressed on, and They're less and less precise these days..

t

Is that a possibility?? I bought the Bosch 120 amp alternator off of FCPEuro so I thought it was good… As for the water pump, I would consider that more of a possibility since it sounds like it’s coming from that general area more than the alternator.

 

[Sapote]

Is that a possibility?? I bought the Bosch 120 amp alternator off of FCPEuro so I thought it was good… As for the water pump, I would consider that more of a possibility since it sounds like it’s coming from that general area more than the alternator.

After 7 days and still didn't remove the belts to test? Shouldn't take more than 15 minutes to get them out.