sea foam and check engine light???
is this normal? new to this stuff and trying to learn, help a 
out 
08-18-2004, 04:07 AM
#4
I'd imagine if your O2 sensor or catalytic converters were on their way out then seafoam would push 'em over the edge...
I know SeaFoam says it's safe for O2 sensors at least, but after doing the SeaFoam treatment on my 2000 I saw the O2 sensor and Catalyst emissions readiness monitors switch to "I" (incomplete data) instead of "C" (checked?). They returned to "C" in a day or 2.
Pull the codes and/or wait a few days to see if it goes away.
I know SeaFoam says it's safe for O2 sensors at least, but after doing the SeaFoam treatment on my 2000 I saw the O2 sensor and Catalyst emissions readiness monitors switch to "I" (incomplete data) instead of "C" (checked?). They returned to "C" in a day or 2.
Pull the codes and/or wait a few days to see if it goes away.
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