i noticed when i put a off road h-pipe on my 95mustang the check engine light came on is this the reason why my check engine light is on and if i change my o2sensors wil it make a difference
when i installed the the h-pipe the o2sensors wre white my car has 0ver 130,000 miles on it and i dont think they have been replaced but i will definately get the codes checked first thankx
I'm moving this one to Tech, it looks to have more of a technical type issue, rather than a tuning issue. I would agree O2 sensors would be suspect after 130,000 miles, but they may not be the problem. Sounds like you need to pull codes, since it could really be anything, and if it's an intermittent CEL, O2's or EGR are usually problematic in that area. It could also be the throttle position sensor if it only occurs during part-throttle cruising.