When cold the engine recycle on a high/low RPM until warm, then it smooth idle. on 1991 Toyota Camry

What cause idle to raise and lower until warm?

by in Fort Riley, KS on December 01, 2011
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2 answers
ANSWER by , December 01, 2011
A bad idle control motor.
ANSWER by , December 01, 2011
Bad idle control motor, vacuum leak or low coolant level.