Pinpointing annoying noise?
Thread Starter
Racer
Joined: Nov 2008
Posts: 253
Likes: 13
From: Clearwater Florida
Pinpointing annoying noise?
I have a noise that seems to be coming from below my car. At first I thought it was a bad cat rattling. Now using the hose trick to pinpoint the noise, it seems to be coming from the access hole at the end of the torque tube near the engine. After pulling the hole plug, its louder in there. Anyone have any input on this? Any help is appreciated. I'm starting to get really frustrated with the whole thing. I'm not really sure what I'm looking at inside the rubber plug..flywheel/flexplate? Is this balanced with weights? Thanks all!
Pro
Joined: Jul 2011
Posts: 567
Likes: 17
From: Lodi Ca.
I have a noise that seems to be coming from below my car. At first I thought it was a bad cat rattling. Now using the hose trick to pinpoint the noise, it seems to be coming from the access hole at the end of the torque tube near the engine. After pulling the hole plug, its louder in there. Anyone have any input on this? Any help is appreciated. I'm starting to get really frustrated with the whole thing. I'm not really sure what I'm looking at inside the rubber plug..flywheel/flexplate? Is this balanced with weights? Thanks all!
Pro
Joined: Jul 2011
Posts: 567
Likes: 17
From: Lodi Ca.
I have a noise that seems to be coming from below my car. At first I thought it was a bad cat rattling. Now using the hose trick to pinpoint the noise, it seems to be coming from the access hole at the end of the torque tube near the engine. After pulling the hole plug, its louder in there. Anyone have any input on this? Any help is appreciated. I'm starting to get really frustrated with the whole thing. I'm not really sure what I'm looking at inside the rubber plug..flywheel/flexplate? Is this balanced with weights? Thanks all!
http://www.permatex.com/products/aut...one_Gasket.htm
Melting Slicks
Joined: Dec 2003
Posts: 3,315
Likes: 17
From: Near Jacksonville Fl.
I have a noise that seems to be coming from below my car. At first I thought it was a bad cat rattling. Now using the hose trick to pinpoint the noise, it seems to be coming from the access hole at the end of the torque tube near the engine. After pulling the hole plug, its louder in there. Anyone have any input on this? Any help is appreciated. I'm starting to get really frustrated with the whole thing. I'm not really sure what I'm looking at inside the rubber plug..flywheel/flexplate? Is this balanced with weights? Thanks all!
Thread Starter
Racer
Joined: Nov 2008
Posts: 253
Likes: 13
From: Clearwater Florida
Checked the flexplate today. No cracks and all the bolts were tight. I did see a couple "scuffs" in the bellhousing area...
Sorry, with the lighting this is the best pics I could take. Could it be something with the starter?
Sorry, with the lighting this is the best pics I could take. Could it be something with the starter?
Tech Contributor
Joined: May 2008
Posts: 2,843
Likes: 16
From: Howell Michigan
St. Jude Donor '09-'10-'11
Sounds like the propeller shaft hub clamp needs adjusting. It needs to be loosened, and then;
Start and run the engine at idle until normal operating temperatures are reached.
Idle or drive for at least 10 minutes.
Turn off the engine and allow the powertrain to cool to ROOM temperature.
Raise the vehicle.
Tighten the propeller shaft hub clamp bolt to 125 N·m (93 lb ft)
You can find the details in the service manual.
Start and run the engine at idle until normal operating temperatures are reached.
Idle or drive for at least 10 minutes.
Turn off the engine and allow the powertrain to cool to ROOM temperature.
Raise the vehicle.
Tighten the propeller shaft hub clamp bolt to 125 N·m (93 lb ft)
You can find the details in the service manual.
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Thread Starter
Racer
Joined: Nov 2008
Posts: 253
Likes: 13
From: Clearwater Florida
Thank you Eric, but what do you think the manual means by loosen? I would think loosening it too much, it would just slip? I appreciate your help! 
Sounds like the propeller shaft hub clamp needs adjusting. It needs to be loosened, and then;
Start and run the engine at idle until normal operating temperatures are reached.
Idle or drive for at least 10 minutes.
Turn off the engine and allow the powertrain to cool to ROOM temperature.
Raise the vehicle.
Tighten the propeller shaft hub clamp bolt to 125 N·m (93 lb ft)
You can find the details in the service manual.
Start and run the engine at idle until normal operating temperatures are reached.
Idle or drive for at least 10 minutes.
Turn off the engine and allow the powertrain to cool to ROOM temperature.
Raise the vehicle.
Tighten the propeller shaft hub clamp bolt to 125 N·m (93 lb ft)
You can find the details in the service manual.
Tech Contributor
Joined: May 2008
Posts: 2,843
Likes: 16
From: Howell Michigan
St. Jude Donor '09-'10-'11
It has a spline, so no it won't slip in rotation, but it will move fore/aft as it grows from thermo expansion. This manual step sets it to a neutral point so that it doesn't put load on the flex plate. The noise it makes is like a rattle when not adjusted properly.
Thread Starter
Racer
Joined: Nov 2008
Posts: 253
Likes: 13
From: Clearwater Florida
I did this procedure twice and it seems to make a worse rattle. Anyone have any ideas? Thanks
Sounds like the propeller shaft hub clamp needs adjusting. It needs to be loosened, and then;
Start and run the engine at idle until normal operating temperatures are reached.
Idle or drive for at least 10 minutes.
Turn off the engine and allow the powertrain to cool to ROOM temperature.
Raise the vehicle.
Tighten the propeller shaft hub clamp bolt to 125 N·m (93 lb ft)
You can find the details in the service manual.
Start and run the engine at idle until normal operating temperatures are reached.
Idle or drive for at least 10 minutes.
Turn off the engine and allow the powertrain to cool to ROOM temperature.
Raise the vehicle.
Tighten the propeller shaft hub clamp bolt to 125 N·m (93 lb ft)
You can find the details in the service manual.
Le Mans Master
Joined: Sep 2003
Posts: 6,276
Likes: 227
From: Farmington CT
Cruise-In VII Veteran
can you make the noise change from P to N to D(brake on)?
Sounds like your on the right track, I've never seen an A4 making the noise you have there, my dad had a '98 with over 220,000 miles, never did that
let us know what you find
Sounds like your on the right track, I've never seen an A4 making the noise you have there, my dad had a '98 with over 220,000 miles, never did that
let us know what you find
Thread Starter
Racer
Joined: Nov 2008
Posts: 253
Likes: 13
From: Clearwater Florida
^no, I have the noise P/N/Red light w/ foot on brake. Any thing over say 1k rpm its gone. It's more prominent now in P and N after "adjusting the propeller shaft hub clamp". Thanks
Instructor
Joined: Jul 2011
Posts: 110
Likes: 0
From: Atlanta GA
Check all engine and trans mounts. Seems when you increase rpm, the resulting torque is removing the nosie. So, get car up safety/secure and run see if you can see the driveline flex. Next would be the torque tube.
Tech Contributor
Joined: May 2008
Posts: 2,843
Likes: 16
From: Howell Michigan
St. Jude Donor '09-'10-'11
