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- Joined
- Oct 16, 2011
- Messages
- 4
- Vehicle Year
- 2004
- Transmission
- Automatic
Does anyone out there understand the difference between the upstream(before the cats) O2 sensors and the downstream(after the cats) O2 sensors?
They look different on the Ford parts website and I'm wondering about the difference. Will using all of one or the other instead of two of each make the engine misfire?
They look different on the Ford parts website and I'm wondering about the difference. Will using all of one or the other instead of two of each make the engine misfire?
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