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2005 Pontiac GTO 6.0L Poor Idle Quality, MIL Lamp on
Posted to GM Driveability on 10/28/2011 4 Replies

app sen 1 voltage only goes to 2.39v at wot app2 and both tpp sensors flip flop as they were supposed to. and now the idle even after tech 2 relearn wont drop below 2000. also we cleaned the throttle plate with castle induction cleaner it was gummed up. recent...

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  Related Documents & Media  2005 Pontiac GTO

 
Message Closed w/Summary

car Vehicle Data

2005 Pontiac GTO

VIN 6G2VX12U25
Engine6.0 L / 8 cyl / GAS
Trans6-speed Standard
DeliveryFuel Injection / SFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, MIL Lamp On
OccursAlways

Trouble Codes

P0121Throttle Position Sensor Range/Performance
P0507Idle Speed Control System Higher Than Expected
Message Closed w/Summary

car Vehicle Data

2005 Pontiac GTO

VIN 6G2VX12U25
Engine6.0 L / 8 cyl / GAS
Trans6-speed Standard
DeliveryFuel Injection / SFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, MIL Lamp On
OccursAlways

Trouble Codes

P0121Throttle Position Sensor Range/Performance
P0507Idle Speed Control System Higher Than Expected