another p0171 and p0174 thread
Its just there to reduce intake air noise
Your options are
1. Fabricate a new pipe
2. Cut it off and add blanking plate
3. Repair the break
4. Replace the part
If you want to repair or cut off the silencer you need to plastic weld the part.
This is easy to do. First put superglue in the join/break then cover it in baking soda.
The baking soda causes the superglue to react going super hot for a fraction of a second effecting a plastic weld. It sets hard instantly and you can even file the results
Id recommend however you do a smoke test first to locate any and all sources of vac leaks. You can build one for next to nothing.
I posted details here https://www.jaguarforums.com/forum/x...-leaks-117917/
Cheers
34by151
Your options are
1. Fabricate a new pipe
2. Cut it off and add blanking plate
3. Repair the break
4. Replace the part
If you want to repair or cut off the silencer you need to plastic weld the part.
This is easy to do. First put superglue in the join/break then cover it in baking soda.
The baking soda causes the superglue to react going super hot for a fraction of a second effecting a plastic weld. It sets hard instantly and you can even file the results
Id recommend however you do a smoke test first to locate any and all sources of vac leaks. You can build one for next to nothing.
I posted details here https://www.jaguarforums.com/forum/x...-leaks-117917/
Cheers
34by151
Go old school? On my LS1 GTO, I just sprayed carb cleaner at various points on the intake. When the idle increases, voila, intake leak.
Here's something more in depth: Make vacuum leaks hiss-tory - Old Cars Weekly
Padre
Here's something more in depth: Make vacuum leaks hiss-tory - Old Cars Weekly
Padre
Thanks, yup as i said smoke kit under construction, all that. Re #3 and 4, could the part be called something else? I am not able to find "silencer" in either the workshop manuals nor any auto parts stores.
Part 2
Part no XR849472 - without chamber
Part No C2C24192 - with chamber
Part 3 XR849656 - Non S/C
Its a good idea to download a copy of JTIS (parts) JEPC (service)
Cheers
34by151
Last edited by 34by151; Jun 10, 2016 at 02:43 PM.
So after going through all of the tubing in those areas, and satisfied that there aren't any leaks, I replaced the MAF sensor. Problem gone, and I've put several hundred miles and a few tanks on now 
thanks all!

thanks all!
If you find leak in this area, you may be able to heat weld it together to eliminate the leak. I had air leaks around one of the small flex tubing connectors and was able to tell when I detected a large amount of dust around the oring. Easy to repair that leak once I found it.
RyeJag
RyeJag
When my 06 SV8 had those codes (drove it 600 miles home from Houston, Tx that way) it was a disconnected EGR valve the car lot did not reconnect. Put it back on and the codes were gone.
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