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Just got my 03 996 C2 Coupe back from the dealer. I've ended up with a new engine (M96/036 ...) following the collapse of the intermediate shaft bearing a couple of weekends ago. Car has covered < 12k miles.

Two things don't quite 'sound' the same ...

1. The 'Sports' exhaust note has nothing like the impact it did (dealer & I have verified the values are opening / closing when the switch is activated). This appeared to happen at the same time as the shaft failure although the dealer cannot figure why the two events would be connected. Exhaust system has not been replaced.

2. There's what sounds like a belt whine - much more intrusive than before. Dealer subsequently replaced the belt but no change. (could conceed I hear this more due to problem number 1)

Any thoughts would be appreciated. Dealer has been very helpful but appears to have run out of ideas !!

MS

post-2824-1116003861.jpg

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Are there any access panels to the engine from the inside of the car on the 996? I ask because after my Boxster went in for some work, it had 'unusual' noises when it came back out. This was traced to the access panel behind the seats not sealing correctly (just needed reseated)

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@0586slb

Don't thing there are any engine access panels in the car. When I saw it in the workshop they were doing the work from under the car with the rear bumper removed.

@Loren

They took the rear bumper (fender?) off & I was able to watch the PSE values opening & closing - guess that implies all has been connected up (correct?). Also pointed out the vacum resovoir & braided pipes.

water pump? alternator? pulley bearing? - could be - all this brand new (part of the engine replacement) - Any ideas how I could try & narrow it down.

Thanks

Edited by mss
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dealer can trace the belt noise to locate the issue (pulley, idler, alternator, water pump, ac pulley etc). if not, drive it for a 50 mi and see if the whine still persists.

some component of the pse isn't installed correctly or is missing. is the valve operable (on/off)? it's definitely link to the engine replacement. maybe they can recheck all the parts on your pse w/ a parts diagram to make sure every piece is transferred to the new engine and double check that all the parts are properly fitted. if they can't fix it, go to another dealer.

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