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Is there a way to slow the idle speed on a 1989 Blazer 350ci?


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Wiki User
2011-09-13 06:17:30
2011-09-13 06:17:30

i have an 87 blazer that's got same prob and after searching and asking for help i found this to be a common prob with not many answers but this is what i came up with, first of all have you tried all the usual adjustments? and is yours injection? if so there is a capped of idle screw to adjust (after removing cap) if still no joy and your really stuck then do what i ended up doing by puting a return spring on throttle linkage, mine been fine since i did this.

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Where is the idle speed motor located at on a 1995 chevy blazer?

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Idle speed is computer controlled and is not adjustable.

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You don't. The ECM controls the idle speed. If you are having idle problems, you may have a vacuum leak and you probably have a "check engine" light illuminated also.

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There are several components on a Oldsmobile Tornado that work in unison to affect the idle. Bleeding the coolant of air bubbles, changing the air filer and cleaning the TPS will all change the idle speed.

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You shouldn't. The idle speed is set at the fatory. Instead look into testing your TPS and VAM. Check timing and and test O2 sensor.


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