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S40 idle problem S40-V40 2001

Rob,

Simplest, cheapest, quickest to try to fix this is clean the throttle body with throttle body cleaner. I have a 2000 S40 and need to perform this at least once a year to clean off the throttle plate of carbon buildup.

Follow the directions on the can and use THROTTLE BODY CLEANER not carburator cleaner.

That little bit of carbon buildup causes the plate to not close completely thus inducing a rough idle.

Good luck

Miker






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