Squeaking noise during cold idle

m96ag · Post by **m96ag** » 16 Jul 2016, 07:04

I used a breaker bar as a stethoscope and I checked the power steering pump and alternator. Both are fine. Upon closer inspection it seems that the noise is coming from under the turbo heat shield closer to the drivers side. I will remove the serpentine belt and check tomorrow and I will try to post audio soon.

m96ag · Post by **m96ag** » 17 Jul 2016, 08:07

Hi again guys. I finally got around to taking the serpentine belt off and the noise persists with the belt removed. Additionally, I have taken a video of the noise with the serpentine belt removed. The noise starts around the 6 second mark.

Matt

Post by **abscate** » 17 Jul 2016, 12:01

Im going to call that an intermittent rattle more than a squeak. It does not sound good. If thats in the TB system, definitely park it until you sort that out.

It could be muffler noise - inspect that system for loose hangers and rattle it when it is cold from underneath.

m96ag · Post by **m96ag** » 17 Jul 2016, 12:08

I will say that it goes away fairly quickly and it's been doing this for the better part of 15,000 miles. For example yesterday I started the car which had been sitting overnight and used my breaker bar as a stethoscope to try to isolate the noise. Then I shut the car off and went inside to grab my phone to take a video for you guys. I restarted the car and it was gone. 2 or 3 minutes is all it takes for it to go away

Post by **oragex** » 17 Jul 2016, 13:40

Might sound like the timing belt is rubbing the top plastic cover, look see anything pushing sidewise on the side cover, such as the power steering hose. Push gently the top tb cover towards the drivers side see if the noise goes away.

m96ag · Post by **m96ag** » 17 Jul 2016, 13:44

oragex wrote:Might sound like the timing belt is rubbing the top plastic cover, look see anything pushing sidewise on the side cover, such as the power steering hose. Push gently the top tb cover towards the drivers side see if the noise goes away.

I took the timing cover off. There are no rub marks.

m96ag · Post by **m96ag** » 27 Jul 2016, 12:18

Update: my mechanic poked around with a stethoscope and says the noise is coming from the turbo. I'll check for excessive play and oil when I fit new intercooler hoses in a few days.

m96ag · Post by **m96ag** » 04 Aug 2016, 10:28

Pulled turbo heat shield and found both lower turbo to manifold nuts missing.

Sommerfeldt · Post by **Sommerfeldt** » 04 Aug 2016, 10:36

Well... to quote Adam Savage... "There's your problem".

Fingers crossed that getting a couple of bolts on will be the fix.

- S

Post by **abscate** » 04 Aug 2016, 11:11

It could be muffler noise - inspect that system for loose hangers and rattle it when it is cold from underneath.

Can I claim the Viking horns for this diagnosis?

Squeaking noise during cold idle

Re: Squeaking noise during cold idle