2004 Ford Mustang O2 sensor

Tiny
DEEJONES
  • MEMBER
  • 2004 FORD MUSTANG
  • V8
  • 2WD
  • MANUAL
  • 39,000 MILES
My 04 mustang GT has a check engine light from the 02 sensor. It has aftermarket exhaust on it causing it to trip the O2 sensor. I can tell its running rich on fuel also. What is the best way to handle this? I like the aftermarket pipes but my concern is for the health of the engine. What do you recommend?
Wednesday, October 22nd, 2008 AT 7:46 AM

2 Replies

Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
Is the exhaust properly installed? Is the cat converter still there? Is the new exhasut behind the converter? Aftermarket exhasut should not interfere with the o2 sensors unless you removed the cat converter. What codes do you have?
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Wednesday, October 22nd, 2008 AT 7:49 AM
Tiny
DEEJONES
  • MEMBER
  • 2 POSTS
Not really sure what is going on with it. Just bought it last monday but I will take a look.
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Wednesday, October 22nd, 2008 AT 8:19 AM

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