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Check engine after NEW muffler

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Old Jul 18, 2010 | 11:14 PM
  #1  
nimbuskid's Avatar
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From: Ann Arbor
Year: 1998
Model: Cherokee
Engine: 4.0
Default Check engine after NEW muffler

Hey guys

My muffler was rusted out, so it came off, and I had to drive around for a few days with no exhaust. During those few days, my check engine light came on. I got the exhaust put back together, new muffler, all good, but the light is still on....

Any ideas?

Thanks
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Old Jul 18, 2010 | 11:50 PM
  #2  
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Try pulling the power and ground off the battery and holding them together for about a min it's a hard reset on the entire vehicle that should erase the code unless you've noticed something different in the way it's driving,running, etc than maybe get it checked but if not the reset ought to do it. If it comes back get it read but that should fix it I know when I changed my exhaust on a different vehicle my check engine light came on because the o2 sensor was moved it went away after a few days though
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Old Jul 19, 2010 | 08:09 AM
  #3  
PJsJeep's Avatar
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just pull the negative/black terminal off the battery for 15 minutes, it will reset the ecu.
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