rattle noise - 986 Forum - The Community for Porsche Boxster & Cayman Owners

seningen · 10-14-2010, 06:19 PM

Quote:

Originally Posted by tuanle16

i don't have a jack, but i crawled up under where i could. i see the protection plastic guards. but where would i find the heat shields? any pictures out there?

basically behind the bumper and above around the exhaust and tranny.

Hope this picture helps.

Mike

tuanle16 · 10-16-2010, 07:09 AM

wow. awesome pic. thanks. unfortunately, mine is not the heat shield. i found it and played with it. solid. no rattle. it also is not the belt. opened up the engine compartment and did not hear the rattle with the engine on and belt turning. frustrating. i think it's coming from the exhaust system, but just can't localize it specifically. when i tap on the exhaust pipes or cats, i can hear it. but just can't find it!!! arrgghh!!

tuanle16 · 10-17-2010, 12:44 AM

does anyone know of a good porsche shop in atlanta, so that i don't have to go to dealership? i actually did try, but they said that noise was normal. trust me..it is NOT normal. i want to get a second opinion on the matter, and hopefully a cheaper one too. thanks for everyone's input so far.

-tuan

BMAN_986 · 10-19-2010, 04:22 PM

I have exactly the same problem you described (the wall, the RPM, etc) in your original posting. It only happened after some hard driving or warmed up car. Took it to my local dealership and they identified the problem as the one of the catalytic convertors (RHS). You do want to get it replaced before the check engine light comes on but have your emissions tested now to see if the cat is still working fine. This may buy you a bit of time. The dealer tested mine and said everything is ok but i should do it sooner rather than later.

sparker · 10-19-2010, 04:38 PM

If it was the heat sheild pictured above that was loose, where are the bolts to tighten this? Would like to check.

Regards,
Sam

BMAN_986 · 10-30-2010, 01:39 AM

so going back to tuanle16's original problem (which from his description sounded identical to the problem on my car) ...

I just finished swapping out the RHS Cat. After along 20 mile/40 minute drive on highway and urban roads everything is good and the noise is completely gone. Looks like it was the Cat after all. It was my first major mechanical DIY job on the car. Took about 2.5hrs from lifting the car to dropping it (and I'm no mechanic). Dealer wanted to charge me 2.1k ... I did it for 400 bucks with used OEM parts. First time I've really heard that engine go through it paces without the horrible rattle.

tuanle16, take it to a reputable dealer. let them confirm it's the Cat then find a mechanic who will fit one for you (or DIY it) and source the Cat yourself. I got mine from http://dcauto.gotdns.com/

Good luck!

tuanle16 · 10-31-2010, 03:00 PM

awesome. congrats. hoping i will be able to solve the same problem. it's now at a local mechanic too. they are going to try to open the cat and weld it back together to save some money instead of buying new one. but sounds as if you were able to buy one for cheap. saw one on ebay, but was concerned it might have same issue. hope i can get rid of it and it doesn't cost me an arm and leg. crossing my fingers. but thanks and congrats to you.