2003 Mustang GT exhaust rattle - Ford Mustang Forum
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post #1 of 2 (permalink) Old 05-12-2010 Thread Starter
03REDGT's Avatar
Joined: Apr 2010
Location: 'awrenceville
Posts: 43
2003 Mustang GT exhaust rattle

hey everyone, ive got a 2003 GT and im getting an exhaust rattle. I cant really find where its coming from, ive been under it hitting the pipes and the only sound i get is a very slight rattle from the o2 sensors, i took them out and drove it around and its still doing it. Its loud enough to hear with the 02's out. The only time it does it is right at 2500 to 2600 rpm under a load and if i stick my head out the window while driving i can tell its def coming from the rear. I have within the last couple months replaced my flowmasters with Mustangs Unlimited "white box" mufflers. Is it possible that something could be loose in them already and only making a noise at that rpm? Im quite confused. If you take the o2's out and hit the pipe and mufflers u get no sound. Sorry so long, just want to make sure u have all the details. Also i have an o/r h pipe and ive tightened every bolt on the exhaust. Thanks for any help.

2003 GT- CAI, plentum, 75mm TB, UD pulleys, stage 3 clutch, short throw, o/r h-pipe, flows, Tien lowering springs, kenny brown camber kit. Future plans-intake manifold, cams, headers.
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post #2 of 2 (permalink) Old 05-13-2010
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Joined: Sep 2008
Location: Tea
Posts: 487
look behind rear wheel up by hanger,mine was tweeked alittle and it rattled against the frame

bbk udp,bbk x-pipe,afe cai,b&m short throw,excal3 tuner,40s flowmasters,20s shelby torque complete zex wet system150shot,stage 2 hitect cams,TF stage2 heads,410rwhp,eibach pro system plus,frrp 3.73
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exhaust , exhaust rattle , muffler

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