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Discussion Starter #1
Okay so my Saab 9-3 is making a loud engine noise, the sound is really hard to explain but I’ve check my timing chain and my timing belt they are both in good condition the timing chain has 15 links in between the crosshairs and the belt is still pretty tight. I’ve oil changed it just 2 days ago and seemed to keep making this loud engine noise.

If someone could help please reply ASAP I have a video on YouTube where you can hear the sound. It’s not a knocking or slapping sound more like a really loud 5.0 truck.

 

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2000 9-3 Aero 5d
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My extended 10 cents worth: Bearing in a Water pump - or your idler pulley.
Alternative question: Does the noise occur occur with the air-con off?
Alt question 2: Does it go away after a while (say 2 mins) or past a certain rev range?
Another forum suggests checking this (see below) - but fails to mention the water pump.

I had a noise I thought was the chain / idler pulley. A non SAAB mechanic said it was probably the air-con, but when I took it to a SAAB specialist - He told me it was the water pump.

Rattling at idle from the engine can often be contributed to a Faulty AC compressor. Turn the AC off and see if it goes away. If it does check to be sure you have the correct amount of freon in the system. If the noise does not go away then check the Idler pulleys, the power steering pump and the Idler pulleys in that order.

If you do replace your water pump, doing the thermostat and Idle pulley belt etc at the same time - saves a bit of time because they are in the same location.
Hope this helps.
 

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Discussion Starter #3
My extended 10 cents worth: Bearing in a Water pump - or your idler pulley.
Alternative question: Does the noise occur occur with the air-con off?
Alt question 2: Does it go away after a while (say 2 mins) or past a certain rev range?
Another forum suggests checking this (see below) - but fails to mention the water pump.

I had a noise I thought was the chain / idler pulley. A non SAAB mechanic said it was probably the air-con, but when I took it to a SAAB specialist - He told me it was the water pump.

Rattling at idle from the engine can often be contributed to a Faulty AC compressor. Turn the AC off and see if it goes away. If it does check to be sure you have the correct amount of freon in the system. If the noise does not go away then check the Idler pulleys, the power steering pump and the Idler pulleys in that order.

If you do replace your water pump, doing the thermostat and Idle pulley belt etc at the same time - saves a bit of time because they are in the same location.
Hope this helps.
AC Does not work on the car. Wondering if I press the ac button if it still works. The car has the same sound throughout me driving. Even when I’m idling beside a car on a light I can hear the sound bouncing of the other car. Thanks for the reply
 

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That is frickn loud! I mean its so loud that I doubt a stethoscope can figure out where its coming from. Can't believe you drive it, but what the hay. You don't tape with the hood open, what's it sound like when you rev it? Could it be an exhaust manifold leak/crack? I'm just guessing here
 

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Discussion Starter #5
That is frickn loud! I mean its so loud that I doubt a stethoscope can figure out where its coming from. Can't believe you drive it, but what the hay. You don't tape with the hood open, what's it sound like when you rev it? Could it be an exhaust manifold leak/crack? I'm just guessing here
It’s gets louder when I rev it. I also check for exhaust leaks and there’s nothing
 

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on a cold engine pull the accessory belt off and start the engine that way you eliminate all the parts outside the engine ,I've had alternators sound like marbles in a dryer.
 
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