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Tacoma King (not verified)    February 21, 2025 - 6:30AM

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Well, the idle surge is the ECM making adjustments for whatever reason. Mine was doing this after picking it up from the dealership for an oil service. Come to find out...the lube tech had loosened the band clamps to the air box...probably to check the filter I'm sure and never tightened them back up thus made the intake pipe to retract from the air box due to torque movement from the engine and at that point
created an air leak. If you have an aftermarket air intake like in my case (Injen) then this could be the issue as it was in mine.

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