Turning on AC increases rpm considerably.How to set idle while AC is in use?
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no need to adjust the iac valve if the A/C connection is feeded to the ECU plus if this the swapped engine you would search for the A/C idle up valve which will be connected through the ecu for A/C idle up because some toyota engine's like 4a-fe 5a-fe and other engine's lack the built in function so toyota has fitted them with Idle up valve.