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check engine

  #1  
Old 06-21-2007, 08:52 PM
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Join Date: Apr 2007
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Posts: 13
Default check engine

I WAS WONDERING IF AN AFTERMARKET CAT-BACK EXAUST SYSTEM WILL MAKE YOUR O2 CENSOR GO CRAZY AND GIVE YOU A CHECK ENGINE LIGHT? I DIDNT HAVE THAT PROBLEM WITH MY MUSTANG BUT I HEARD OF PPL WITH IMPORTS WHO DO
 
  #2  
Old 06-21-2007, 09:03 PM
riceburner700's Avatar
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Join Date: Jan 2005
Location: Loveland CO
Posts: 6,629
Default RE: check engine

no, you will get a check engine light when you unplug the o2 sensor not if its plugged in. Next time try not to type in all caps.
 
  #3  
Old 06-21-2007, 09:37 PM
Join Date: Sep 2005
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Posts: 680
Default RE: check engine

sometimes it'll come on if you have a high flow cat b/c it wont see the backpressure it likes to see so it throws a code
 
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