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P0503 Diagnostic Trouble Code Discussion for June 2011

VSS Circuit Intermittent

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Trouble Ticket Help Requests for DTC P0503
Help Request Posted
1998 Ford Mustang GT 4.6L Surge, MIL Lamp on VIN: 1FAFP45XXW
P0503: Intermittant vehicle speed. Hey all you ford techs out there i got this mustang that the ecm shows to be running lean. I checked fuel pressure its good, checked cleaned and replaced the maf sensor it shows approx. 7gs on airflow. Tps voltage good coolant sensor reading properly. Smoked f...
June 15, 2011