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P1507 Diagnostic Trouble Code Discussion for July 2007

Idle Control System Malfunction

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Trouble Ticket Help Requests for DTC P1507
Help Request Posted
2002 Mazda B3000 DS 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 4F4YR16U02
P1507: Idle Air Control System Underspeed Error. light comes back on within a day not a big drivabilty concern but light bothers customer. tested air control valve all ok couldn't find any vacuum leaks been at the dealer charged lots of money still no fix. any ideas were to star?
July 09, 2007