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Join Date: Mar 2009
Posts: 1,871
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Undercarriage rattle
Hi-I have a 99 996 with 92 k on the odometer. Recently it has begun to make a distinct audible rattle when going over rough pavement. I think its from the rear. I plan to get it up on a lift and inspect it myself before going to a shop. What to check and look for??
Thanks in advance for any answers and advice. |
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03-25-2016, 04:00 PM
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Join Date: Jan 2004
Location: Pittsford, NY
Posts: 3,721
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These 996's are known for the cat converter elements breaking free on the inside. They rattle. Check that first. Check your wheel torque as well, could be a loose wheel. Chances are its the converter. They can't be fixed, so you'll need to replace them if that's it.
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Tony G 10 Porsches come & gone! 1962 Morgan Plus 4 
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03-26-2016, 07:15 AM
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Join Date: Mar 2009
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Thank you Tony!
It turned out to be a very different source for the noise that I had imagined. The intake air box rests on 2 prongs that fit into rubber socket grommets that are inserted into holes in the rear crossmember. The grommets were missing, and the air box was dancing around causing the rattling noise. |
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03-28-2016, 01:45 PM
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Join Date: Jan 2004
Location: Pittsford, NY
Posts: 3,721
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Great! Simple fix.
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Tony G 10 Porsches come & gone! 1962 Morgan Plus 4
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03-28-2016, 02:17 PM
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Administrator
Join Date: Feb 2015
Posts: 3,358
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Ah, was it this little guy? 1999 Porsche 911 Carrera Coupe - Intake System - Page 1. Glad it was a simple easy fix.
 
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03-28-2016, 02:40 PM
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Join Date: Mar 2009
Posts: 1,871
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That's the piece Luccia- I will order a couple soon-I just need research a few more parts to build up a decent order.
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03-28-2016, 03:39 PM
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