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KCF3712 · 10-05-2010, 02:48 PM

Hey Ya'll. I'm wanting to replace my oxygen sensor(s) and need some advice. I have a 2007 Kia Spectra with 108K miles. It is recommended to change them at 100K. To save a little $$$, would it be OK to replace just the upstream or should I replace both up and downstream for optimal FE? In my research, it's the upstream that regulates the A/F mix, right?

Thanks in advance

KCF3712

10-05-2010, 02:48 PM	#1 (permalink)
KCF3712 Want2BAHyperMiler Join Date: Sep 2010 Location: Castalian Springs, TN Posts: 18 PeytonsLimmo - '07 Kia Spectra EX 90 day: 40.55 mpg (US) PeytonsVolMobile - '07 Chevy HHR LT1 Thanks: 9 Thanked 1 Time in 1 Post	Which O2 sensor do I replace? Hey Ya'll. I'm wanting to replace my oxygen sensor(s) and need some advice. I have a 2007 Kia Spectra with 108K miles. It is recommended to change them at 100K. To save a little $$$, would it be OK to replace just the upstream or should I replace both up and downstream for optimal FE? In my research, it's the upstream that regulates the A/F mix, right? Thanks in advance KCF3712 __________________