2004 Ford Mustang O2 sensor

2004 FORD MUSTANG
39,000 MILES • V8 • 2WD • MANUAL
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DEEJONES
  • MEMBER
  • 2 POSTS
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?
Oct 22, 2008 at 12:46 AM
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MASTERTECHTIM
  • ✓Experienced 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?
Oct 22, 2008 at 12:49 AM
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DEEJONES
  • MEMBER
  • 2 POSTS
Not really sure what is going on with it. Just bought it last monday but I will take a look.
Oct 22, 2008 at 1:19 AM
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