can aftermarket alarm system cause the check engine light to turn on? on 1997 Pontiac Firebird

my engine has high idle than stumbles to low idle

by in Corsicana, TX on May 23, 2012
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2 answers
ANSWER by , May 23, 2012
have the code scanned at auto zone for free and post them
ANSWER by , May 23, 2012
Unlikely...but it really depends on how it was installed. Is the the alarmn new?