2001 Outback Cold Start Problem - Ultimate Subaru Message
Nov 18, 2003 · Could be a dead thermal sensor, or a sticking idle air control valve, or a mass air flow (MAF) (actually NOT a MAF problem since your car uses a manifold air pressure (MAP) sensor). Could also be EGR or evaporative emmision purge, but the computer should show a code. Could also be an oxygen sensor, but again the computer should show a code.
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