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P0506 Diagnostic Trouble Code Discussion for July 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 Surge, Stall VIN: 1GCHG35U54
P0506: Idle Speed Low. Van stalls intermittently,mostly on start up. Sometimes idle races upon start up. Checked for vac. leaks,found none.Do not have a smoke machine.(still think i have an intake leak just can't prove it) Tested fuel pressure all ok,also holds steady with key off.T...
July 08, 2009
2005 Ford Explorer Eddie Bauer 4.0L Stall, MIL Lamp on, VIN: 1FMZU74K05
P0506: IAC idle problem too low. Unable to check this vehicle when cold. Check for vacuum lekas with smoke none found. Can this have vacuum leak when cold at the intake manifold gaskets like the older Explores did ? I also check the IAC valve and did not found any problems with it. Thanks for...
July 13, 2009
2008 GMC Sierra 1500 WT 5.3L Poor Idle Quality, MIL Lamp on VIN: 2GTEK19JX8
P0506: idle lower than expected. check eng. light on p0121 p0506 idle goes up and down sometimes too low eng. hesitates i did replaced throttle body, and clear codes run good for five minutes until i step on the gas rpm goes up but it won't come down until you shut off the eng. or put it on ...
July 16, 2009