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International Automotive Technicians Network
2017 Ford Mustang GT 5.0L High Idle
Posted to Ford Driveability on 1/23/2023 18 Replies

I am not the original technician that started work on this vehicle. Previous tech smoke tested the intake manifold and found small minor leaks. Previous tech changed out Mass Air Flow sensor. No change. Vehicle has abnormally high idle. Idle is around 2000...

18 Replies Received (View Replies)

  Related Documents & Media  2017 Ford Mustang GT

 
Message Closed w/Summary

car Vehicle Data

2017 Ford Mustang GT

VIN 1FA6P8CF8H
Engine5.0 L / 8 cyl / GAS
Trans6-speed Standard
DeliveryFuel Injection / Direct Injection
EmissionsOBD-II Compliant
SymptomsHigh Idle
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected
P0316Misfire Detected On Startup (Within the 1st 1000 Revolutions)
P0507Idle Speed Control System Higher Than Expected
Message Closed w/Summary

car Vehicle Data

2017 Ford Mustang GT

VIN 1FA6P8CF8H
Engine5.0 L / 8 cyl / GAS
Trans6-speed Standard
DeliveryFuel Injection / Direct Injection
EmissionsOBD-II Compliant
SymptomsHigh Idle
OccursAlways

Trouble Codes

P0300Multiple Misfire Detected
P0316Misfire Detected On Startup (Within the 1st 1000 Revolutions)
P0507Idle Speed Control System Higher Than Expected