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1999 Ford Mustang 3.8L Poor Idle Quality, Surge, Misfire
Posted to Ford Driveability on 12/19/2013 5 Replies

Vehicle came in with p1120 and rough idle and idled around 1200. checked throttle position with scanner showed range of 9%-43% at idle. backprobed connecter read 1.2 (closed) volts signal and 5.19 reference. checked sensor sweep seemed fine. checked ground wir...

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  Related Documents & Media  1999 Ford Mustang

 
Message Closed w/FIX

car Vehicle Data

1999 Ford Mustang

VIN 1FAFP4046X
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Surge, Misfire
OccursIdle, Intermittently

Trouble Codes

P1120TP Sensor 1 Circuit Malfunction
Message Closed w/FIX

car Vehicle Data

1999 Ford Mustang

VIN 1FAFP4046X
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, Surge, Misfire
OccursIdle, Intermittently

Trouble Codes

P1120TP Sensor 1 Circuit Malfunction