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CEL On, Car Is Loud

  #1  
Old 02-24-2009, 01:50 PM
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Default CEL On, Car Is Loud

2004 Sebring Platinum Series V6
Around 75k miles

This is my parents' car. Mom has been driving it even though something was not right. I noticed when walking up to the car, that it's very loud. I can't tell if it's the engine or something with the exhaust, but I suspect it's the engine. Mom says the car isn't driving any differently. For a while, it was just louder than usual, but recently the CEL came on. I know this could be many things, but just trying to get an idea of what to expect when it gets serviced on Thursday. Any ideas?

Edit: Forgot to say the car hasn't been to Autozone or anywhere to pull a code yet.
 

Last edited by swimjax; 02-24-2009 at 01:56 PM.
  #2  
Old 02-24-2009, 03:46 PM
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You may be able to pull the codes by turning the key on-off-on-off-on without starting the engine and then read the codes in the odometer. There's not much we can tell you without the codes. If the "louder" sound seems like a hole in the exhaust, that could certainly cause a code to set (either an O2 sensor code or a catalyst efficiency code). If you can't lift the car to look at the exhaust system, you could try looking under the car when you start it on a cold morning and see if there's exhaust smoke coming from the wrong place.
 
  #3  
Old 02-24-2009, 03:50 PM
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Thanks! I will take a look.
 
  #4  
Old 02-25-2009, 12:24 AM
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An exhaust leak, especially one in the EGR system, can cause noise and will undoubtedly set off the exhaust back pressure sensor. (Included as part of the EGR valve.)
 
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