IACV or Catalytic Converter?

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Asked by kgl58 Jun 10, 2012 at 11:39 AM about the 1999 Subaru Legacy 4 Dr L AWD Wagon

Question type: Maintenance & Repair

How do I know if my idling problem is the IACV (threw that code when hooked to machine) or the catalytic converter that a retired mechanic suggested it could be? I live in an extremely small town with limited mechanics and no one here just will assess the situation. They just keep replacing things and hope it fixes it and I can not afford to do that. The car idles very rough at standstill and when accelerating, seems to take a bit to get to speed. Help! I am a single parent and this is my only vehicle. I need a suggestion as to what to ask so I do not get ripped off. Thanks.

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TonytheWoodsman answered about a year ago

I don't think the idle would be affected by the catalytic converter.

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Zack answered about a year ago

nope, not the cat. those IACV get very dirty. carb cleaner should clean it right out. they've veryyyy expensive to replace on subarus

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