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P0506 Diagnostic Trouble Code Discussion for April 2009

Idle Speed Low Performance

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Trouble Ticket Help Requests for DTC P0506
Help Request Posted
2004 Chevrolet Express 3500 6.0L Poor Idle Quality, MIL Lamp on VIN: 1GBJG31U54
P0506: Idle Speed Low. van will sometimes idle low or stall at idle, usually in gear. I can not control the iac with scanner but I can control it with a separate controller hook up to the iac. has anyone run into this problem and can tell me if it's a wiring problem or something els...
April 21, 2009