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1999 Pontiac Firebird Formula 5.7L High Idle 3000+
Posted to GM Driveability on 10/27/2022 18 Replies

This vehicle is completely Stock. Vehicle on start shoots up immediately to [...] rpm and just holds there at idle. Customer few months prior had it at another shop and they replaced ecu and iac motor which fixed the problem for about 20 miles until custom...

18 Replies Received (View Replies)

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car Vehicle Data

1999 Pontiac Firebird Formula

VIN 2G2FV22G4X
Engine5.7 L / 8 cyl / GAS
Trans6-speed Standard
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsHigh Idle 3000+
OccursAlways

Trouble Codes

P0507Idle Speed Control System Higher Than Expected
Message Closed

car Vehicle Data

1999 Pontiac Firebird Formula

VIN 2G2FV22G4X
Engine5.7 L / 8 cyl / GAS
Trans6-speed Standard
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsHigh Idle 3000+
OccursAlways

Trouble Codes

P0507Idle Speed Control System Higher Than Expected