Guys on idle when warm it bounces up and down 500-1100-- what causes this ! is it throttle body or the below answers I got last time!
Does this also effect fuel economy when driving at highway speed !
toysky,
May 9, 5:16pm
Rubber intake tube between airbox/AFM and throttle body has probably split underneath.
Quote
franc123 (258 )5:57 pm, Wed 18 May #2
Possibly idle air control valve, First check the air intake hose between the air filter and plenum chamber for cracks/splits. Next thing I would do is clean out the throttle body with some brake or carb cleaner.
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