Check engine light came on with error 420. Catalyst system warmup under threshold. Checked both o2 sensors, returning 10kohm of current at 12vdc, they check out fine.
I traced another sensor to what looks to be a pre-cat, or a warmup cat, which explains the error code. What I'm wondering is has anyone else had to replace this. They're warrantied for 80,000 miles by federal law, however the labor is not (i'd do it myself wether it were free or not from the dealer.)
I'm also wondering if there's an alternative since this rice burner doesn't need two cats.
Since its a proprietary fit to the exhaust manifold (the bolt pattern and gasket are a proprietary fit) it would be complicated but not impossible to make a straight pipe from the manifold outlet to the primary catalytic converter inlet. It would likely be cheaper too, even if it cost a muffler shop $100 to bend a pipe and mount it to a specific bolt pattern. However, I would still have the CEL code 420 issue. Anyone had any experience overriding this error code by tricking the sensor (I measured 2.66kohms@~750f temperature, so theoretically i could jam a resistor in there at that rating and it would always read 750f, which I believe is the minimum operating temperature of the warmup cat.
So I guess I'm asking...has anyone done this before or should my car be the labrat?
I traced another sensor to what looks to be a pre-cat, or a warmup cat, which explains the error code. What I'm wondering is has anyone else had to replace this. They're warrantied for 80,000 miles by federal law, however the labor is not (i'd do it myself wether it were free or not from the dealer.)
I'm also wondering if there's an alternative since this rice burner doesn't need two cats.
Since its a proprietary fit to the exhaust manifold (the bolt pattern and gasket are a proprietary fit) it would be complicated but not impossible to make a straight pipe from the manifold outlet to the primary catalytic converter inlet. It would likely be cheaper too, even if it cost a muffler shop $100 to bend a pipe and mount it to a specific bolt pattern. However, I would still have the CEL code 420 issue. Anyone had any experience overriding this error code by tricking the sensor (I measured 2.66kohms@~750f temperature, so theoretically i could jam a resistor in there at that rating and it would always read 750f, which I believe is the minimum operating temperature of the warmup cat.
So I guess I'm asking...has anyone done this before or should my car be the labrat?
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