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2000 Ford Mustang GT 4.6L Surge, o/d light flashing
Posted to Ford Driveability on 6/24/2005 4 Replies

PO721 OUT PUT SPEED SENSOR. The speedometer will bounce between 30 and 50 and the trans will shift up and down. it might go 3 hours or so before it will act up. we replaced the sensor twice twice with ford parts. if i scope the sensor at the pcm it doesn't dro...

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Message Closed w/FIX

car Vehicle Data

2000 Ford Mustang GT

VIN 1FAFP42X5Y
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsSurge, O/D Light Flashing
OccursIntermittently
Misc.Gt

Trouble Codes

P0721Output Shaft Speed Sensor Circuit Malfunction
Message Closed w/FIX

car Vehicle Data

2000 Ford Mustang GT

VIN 1FAFP42X5Y
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsSurge, O/D Light Flashing
OccursIntermittently
Misc.Gt

Trouble Codes

P0721Output Shaft Speed Sensor Circuit Malfunction