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P1506 Diagnostic Trouble Code Discussion for August 2007

Idle Air Control System RPM Higher Than Expected


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Trouble Ticket Help Requests for DTC P1506
Help Request Posted
1996 Ford Contour GL 2.0L Poor Idle Quality, high idle VIN: 1F12345678
P1506: idle to high. car is idleing at 1557 rpm. on start up it flares higher then drops to this. also when you accelerate it's slow coming back to 1557. iac shows 27% short term fuel trim is 0 average. so I don't see that a vac. leak is in the picture, also I took the iac off and...
August 01, 2007
1996 Ford Contour GL 2.0L Poor Idle Quality, high idle VIN: 1F12345678
P1506: idle to high. car is idleing at 1557 rpm. on start up it flares higher then drops to this. also when you accelerate it's slow coming back to 1557. iac shows 27% short term fuel trim is 0 average. so I don't see that a vac. leak is in the picture, also I took the iac off and...
August 03, 2007
1997 Mazda 626 DX 2.0L Poor Idle Quality VIN: 1YVGE22C8U
P1506: Idle Air Control System RPM Higher Than Expected. car came in with check engine light on. drove ok ideled ok lean code. throttle body gasket sucked in. r&r throttle body gasket, clean iac and throttle body. reassembled and idels surges from 1500-2500. at 2500 computer cuts fuel hencethe surge. removed iac...
August 28, 2007