question about the cold engine light - Toyota Yaris Forums

swidd · 01-22-2011, 08:55 PM

So... according to that article (Should I let my car warm up each morning), repeated idle warm-up can plug/clog/fuck up the catalytic converter, causing a drop in MPG over time.

I have a slight drop in MPG after four winter seasons with the Yaris; I usually just start up and drive away, but on days with snow, ice or rime covering the windows, I start it up, turn the heater to max, and let the engine idle while I clear the windows of winter juice.

So my question will be: is there a simple way to clean out such gunk from the catalytic converter? Like pouring a bottle of some slime down the gas tank?

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01-22-2011, 08:55 PM	#1
swidd Drives: Yaris HB Join Date: Jul 2007 Location: Central Alabama, GOD BLESS AMERICA Posts: 755	So... according to that article (Should I let my car warm up each morning), repeated idle warm-up can plug/clog/fuck up the catalytic converter, causing a drop in MPG over time. I have a slight drop in MPG after four winter seasons with the Yaris; I usually just start up and drive away, but on days with snow, ice or rime covering the windows, I start it up, turn the heater to max, and let the engine idle while I clear the windows of winter juice. So my question will be: is there a simple way to clean out such gunk from the catalytic converter? Like pouring a bottle of some slime down the gas tank?