A rattle type noise may develop from one of the exhaust heat shields. Replacement of the affected heat shield may be required to correct this issue.Google+
Car Problem Reports
Mitsubishi Galant Rattle Nosie From Exhaust Heat Shield
Mitsubishi Galant Problem
Exhaust & Emissions Affected: 2.4L 4 Cylinder
Average Mileage: 69,594 mi (13,000 mi - 150,000 mi)
Visitor, 2004 Mitsubishi Galant, 65,000 mi
my local independent repair shop simply removed the heat shield.
Visitor, 2007 Mitsubishi Galant, 13,000 mi
I too had the rattle noise from a heat shield. The dealer corrected the problem.
Visitor, 2008 Mitsubishi Galant, 48,000 mi
A rattle (vibration) noise when car is idling and when you accelerate.
Visitor, 2011 Mitsubishi Galant, 50,000 mi
Exhaust heat shiel rusted through on clamp closer to engine. Rattles almost constantly
Visitor, 2007 Mitsubishi Galant, 72,000 mi
I had a rattle that continued to get worse as I reached approximately 2400-2600 RPMs no matter what gear I was in. This was more annoying than anything else. I had the local shop rip it off the bottom and no vibrations or noise since.
Visitor, 2006 Mitsubishi Galant, 96,000 mi
Shield at exhaust manifold rattles when cold.
rattle and bery annoying sound due to loose heat shield.
Visitor, 2005 Mitsubishi Galant
rattles on cold start, but after it worms up, it stops.
Visitor, 2006 Mitsubishi Galant, 64,120 mi
When the car is put in reverse or drive the rattle from a heat shield or something else becomes very loud
Visitor, 2007 Mitsubishi Galant, 71,000 mi
Exhaust heat sheild rattles once in a great while, but hasnt done it to much yet, butwill fix soon sometimes on those you only need to tightend something or bend something a little bit away from what its rattling against.