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Registered
Join Date: Jul 2006
Location: Park City, Utah
Posts: 50
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996 muffler removal
I need to repair the PSE vacuum valve (dashpot?) or it's hose on the left side of my 2000 996. Just a note; this model has no switch but it is somehow modulated by the DME so has a vac switch that directs vacuum to the two dashpots on the muffler bypass's which, on this model, entirely bypass some exhaust via a 1" pipe from input side to the exhaust tip. I've used a vac pump with gauge to test and find I can operate the right side -and I can hear it- and vac is held. On the left no vac will build so there must be a leak in the dashpot or the last 8" of hose I can't reach or even see from under the car. OK, sorry for all that detail but my Q for now is: How do I drop the left muffler? It appears easy but is it? Would it be better to remove the rear valence? Exactly how is that done? ie where are the screws, clips, etc? thanks, jvm
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JVictor |
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10-24-2011, 09:36 AM
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Join Date: Jan 2008
Location: NJ
Posts: 1,186
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Jack it up and secure it, jack stand(s), on the side to be removed.
Take the wheel off. Loosen the two bolts on the muffler to cat clamp, on the left side, under the rear of the car. Slide the clamp toward the cat until you can see the seam. Remove the three Nuts, facing the engine. they hold the muffler to the bracket. drop the muffler down to get to the vacuum line. Remove your vacuum line. Slide, wiggle, curse the muffler down and out towards the front. Its awkward and a little HEAVY. It is actually pretty easy to drop forward and out. First time will take you ~30 minutes next time 10.
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2013 991.1 Carrera S Cab 2004 996 Turbo CAB X50 sold 2003 996 cab 6 speed Sold 1972 RS 3.2 twin plug short stroke crank fire, roll bar, sold DE instructor since 1985 Last edited by FPB111; 10-24-2011 at 10:01 AM.. |
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10-24-2011, 09:56 AM
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You can see the three studs that hold the muffler bracket to the engine bracket on the muffler brackets in this pic
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2013 991.1 Carrera S Cab 2004 996 Turbo CAB X50 sold 2003 996 cab 6 speed Sold 1972 RS 3.2 twin plug short stroke crank fire, roll bar, sold DE instructor since 1985 |
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10-24-2011, 10:04 AM
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Location: Park City, Utah
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Tnx for quick reply, FB111. I think I will have time this eve to do that, tho my wife hates to see one of our cars go on stands thinking it will be up there for weeks. She also likes the loud exhaust but I think it is to raspy and harsh esp around the 'hood. Next project is adding a switch. Know of any good links for adding a switch? tnx again, jvm
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JVictor |
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10-24-2011, 11:00 AM
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Location: Park City, Utah
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oops
Sorry that is "FPB111"... jvm
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JVictor |
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10-24-2011, 11:02 AM
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Join Date: Feb 2011
Location: Bellevue, Wa
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I never took the wheel off....not sure what that gains you
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Ed M 86' Coupe |
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10-29-2011, 08:06 AM
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