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P0506 Diagnostic Trouble Code Discussion for March 2005

Idle Speed Low Performance

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Trouble Ticket Help Requests for DTC P0506
Help Request Posted
1998 Buick Century Limited 3.1L No Start, Poor Idle Quality, Stall, MIL Lamp on VIN: 2G4WY52M0W
P0506: Idle Speed Low. ... did fuel pump pressure test. Vehicle had good pressure and held during tests. Did an electrical waveform test on the fuel pump, it didn't look to good so we replaced the pump. All the time the car was in the shop it started and ran ok. With the weak wavefo...
March 09, 2005