my 2003 impala idle goes up and down.
Car's origional problem was stalling at stop light,idle was kinda low .I
cleaned intake with carb cleaner replaced air filter,and idle control
sensor.The idle ,I feel is on low side- but- there's no adjustment to raise
Car ran good for few weeks, but now its doing it again -I hear idle going
up and down when I slow down, parking car or at stop light . The check
engine light is NOT on.
You may have to reset the ECM so it can relearn the idle settings after you have cleaned everything up, sometimes this can take up to 20 minutes to complete a relearn routine.
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