CEL P0720
11-22-2009, 06:53 PM
#1
CEL P0720
I got code P0720 (speed sensor)
my MODs:
Vortech supercharge at 10PSI.
OEM tranny + gears
OEM header.
T1R v3 70MM single test pipe + exhaust.
CM stage 3 clutch kit with CC 12 pound fly wheel.
1000cc id injectors
While I am driving Sometimes it comes a minute after I started the car. Sometimes 30 minutes after while I am cruising on highway. And when I restart the car. It went away for a moment n it come back on. So anyone know what should do? Replace the sensor or the wires n adapter? Any help will be greatly appreciated. Thx Leo
my MODs:
Vortech supercharge at 10PSI.
OEM tranny + gears
OEM header.
T1R v3 70MM single test pipe + exhaust.
CM stage 3 clutch kit with CC 12 pound fly wheel.
1000cc id injectors
While I am driving Sometimes it comes a minute after I started the car. Sometimes 30 minutes after while I am cruising on highway. And when I restart the car. It went away for a moment n it come back on. So anyone know what should do? Replace the sensor or the wires n adapter? Any help will be greatly appreciated. Thx Leo
11-23-2009, 05:29 AM
#4
Former Moderator
P0720 Output Speed Sensor Circuit Malfunction (Transmission)
I would unplug the sensor and plug it back in. It may just be a bad connection. Check the wires for chaffing while you're under there.
I would unplug the sensor and plug it back in. It may just be a bad connection. Check the wires for chaffing while you're under there.
11-23-2009, 05:30 AM
#5
[QUOTE=negcamber,Nov 23 2009, 06:29 AM] P0720 Output Speed Sensor Circuit Malfunction (Transmission)
I would unplug the sensor and plug it back in. It may just be a bad connection.
I would unplug the sensor and plug it back in. It may just be a bad connection.
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11-24-2009, 08:21 AM
#9
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jack up rear wheels off the ground.... make sure the car is very very secure....
put the car in first and let the clutch out so the rear tires spin in the air. it shouldnt stall out if you let the clutch out without depressing the gas
go udner the car and unplug the sensor and test the voltage at the connector... if you get voltage in spec, sensor is bad - replace, if you have no voltage, or voltage that is higher or lower than spec, theres a wiring problem. you will probobly need a shop manual to find the voltage range on that sensor ;-)
put the car in first and let the clutch out so the rear tires spin in the air. it shouldnt stall out if you let the clutch out without depressing the gas
go udner the car and unplug the sensor and test the voltage at the connector... if you get voltage in spec, sensor is bad - replace, if you have no voltage, or voltage that is higher or lower than spec, theres a wiring problem. you will probobly need a shop manual to find the voltage range on that sensor ;-)
11-24-2009, 09:16 AM
#10
Originally Posted by S2kRally,Nov 24 2009, 09:21 AM
jack up rear wheels off the ground.... make sure the car is very very secure....
put the car in first and let the clutch out so the rear tires spin in the air. it shouldnt stall out if you let the clutch out without depressing the gas
go udner the car and unplug the sensor and test the voltage at the connector... if you get voltage in spec, sensor is bad - replace, if you have no voltage, or voltage that is higher or lower than spec, theres a wiring problem. you will probobly need a shop manual to find the voltage range on that sensor ;-)
put the car in first and let the clutch out so the rear tires spin in the air. it shouldnt stall out if you let the clutch out without depressing the gas
go udner the car and unplug the sensor and test the voltage at the connector... if you get voltage in spec, sensor is bad - replace, if you have no voltage, or voltage that is higher or lower than spec, theres a wiring problem. you will probobly need a shop manual to find the voltage range on that sensor ;-)
does anyone know what voltage spec for the speed sensor?
?
thx