A hole in the muffler would cause a knocking sound in your muffler. A loose exhaust pipe can also cause a knocking noise.
A lack of water in your cooling system will cause your 2002 Pontiac Sunfire to overheat. A malfunctioning thermostat can also cause it to overheat.
Maybe the muffler is bad.
Damage. Hole. Perished gasket. Incorrectly fitted. Corrosion.
Not likely. But you know you have a hole in your muffler so unless you want to have an accident from carbon monoxide poisoning you should have it replaced ASAP. Then reset the light and if it does not come back on, you know that was the cause.
Because of condensation the inside of your muffler, the muffler will begin to deteriorate (rust) over time from the inside. This can and will cause holes in the muffler. Along with the hole (s) the internal structure of the muffler will eventually break apart and plug the muffler, preventing the exhaust gas and the pressure from the engine from exiting the vehicle. This will cause what is called "back pressure" on the engine, causing it to lose power. Extreme example would be "you push the gas pedal to the floor but the car will not go more the 25 miles per hour". I would recommend you have you muffler replace. That should solve your problem.
A buildup of raw fuel in the exhaust system is then ignited and damages the exhaust muffler or blows a pipe apart.
No. It will cause a problem with both back pressure and noise.
if is the 2.3l, only when started the car,its the supercharged seal to will be replaced. Just'n Style
Answer: Welded onBelow would be how to repair if the muffler has broken away from the exhaust pipe.If you have a welding machine:If your just attaching the muffler, You would need to attach the muffler to its hanger, then find a way to secure it to the exhaust so you can then weld it in place.If you do not have a welding machine:Most auto repair shops, have a welding machine so that they can do these kind of repairs if you lose your muffler, you can also purchase some special muffler/exhaust tape to tape around the break. Using the tape is a temporary fix.