924Board.org

Druman · Joined: 19 Mar 2007 Posts: 419 Location: Middleport, Ohio

For a while now I have had a heat shield rattling like crazy, it started off kinda unnoticable but it finally got to the point where I was like "Man I gotta do something about that, it's embarrassing, people probably think I have a crappy car cuz it's noisy!" So yesterday I jacked it up and got underneath it, and the only heat shield I could find was the one over the cat, and it wasn't lose at all, so I hit the exaust pipe with my hand and could hear the rattle, "Ah ha!" I thought to myself, it wasn't a heat shield at all but the O2 sensor was loose! Imagine that, so I got my tools and tightened the dang thing. Voila! No more rattle, aaaaand I gained a little bit of horse power that I had apparently lost because it was making my exaust leak! Man that was the greatest day of my life when I figured all of that out. Crazy how things work like that eh?

7osh
_________________
87' 924S non-sunroof (Red) 45K miles
85' 944 "early" NA (Red) 130K miles

PORSCHE pisses excellence...

Benino · Posted: Wed Apr 18, 2007 10:02 am Post subject:

Those easy fixes make u feel good. I had a rattle like that turned out to be the spot welds on the heat shield for the cat. Some of them separated. I ripped off the heat shield completely. Fixed it right up.

_________________
1980 Porsche 924 N/A USA
1980 Porsche 924 turbo USA
1987 Porsche 944S USA

Druman · Joined: 19 Mar 2007 Posts: 419 Location: Middleport, Ohio

Yeah, I had the same thing happen to me with the Taurus I used to have. I hate heat sheilds.
_________________
87' 924S non-sunroof (Red) 45K miles
85' 944 "early" NA (Red) 130K miles

PORSCHE pisses excellence...

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

You had better remove it and apply some fresh anti-seize compound or it may "become one" with your down pipe. . .
_________________
Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

Hoboceratops · Joined: 16 Aug 2006 Posts: 156 Location: Atlanta, GA

fiat22turbo · Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR

Nice find!

I will caution you that when you go to apply anti-sieze that you make sure the anti-sieze is sensor friendly or be very, very careful when applying it to the sensor to not get ANY on the sensor itself and only on the threads.

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

Druman · Joined: 19 Mar 2007 Posts: 419 Location: Middleport, Ohio

Thanks for the feedback guys, but I've noticed that now that the rattle is gone, I can hear other things that I couldn't really hear before, like I've noticed that the engine has a little bit of a tick to it. Is that normal, I've heard of a so called "4 cylinder curse" the sound the injectors make as they turn on and off, but I don't know if that is common with a Porsche, any advice?

7osh
_________________
87' 924S non-sunroof (Red) 45K miles
85' 944 "early" NA (Red) 130K miles

PORSCHE pisses excellence...