Welcome!

It shouldn't do that...

I would check the easy things like your throttle body boots are all tight and connected. These are prone to blow off... I would also stick about 5 ounces of Seafoam fuel treatment in the tank. The stuff is like magic!:yes:

Two big things to do is sync the throttle bodies and set the TPS. Throttle position sensor. Do a search on those two.

Also please give us a little more info on any known mods to the bike... IE: PCIIIusb and such...

 

Also check your idle speed, it should be about 1250 rpm when warm. If it's lower than this then it may not idle when cold.

Might be worth checking spark plugs and air filter, should be okay at 5000 miles but always good to rule out as much stuff as possible.

Is the fuel fresh ? Petrol is only good for a few weeks these days apparently.

Pete

 

Sensor malfunction

Sounds like a sensor input malfunction related to heat soak back etc...; causing a poor connection or an issue with the sensor itself.

The SV has inlet pressure and temp throttle position sensors located near the air box. You can raise the tank, pull the air-box cover and see where the sensors are. I you loosen the boots connecting the air-box to the throttle bodies you should be able to check the connections to both sensors and make sure they are latched properly, not corroded etc...

From the manual
SENSORS
INTAKE AIR PRESSURE SENSOR (IAP SENSOR)
The intake air pressure sensor is located at the rear side of the air cleaner box and its vacuum hose is connected to the throttle body. The sensor detects the intake air pressure, which is then converted into voltage signal and sent to the ECM . The basic fuel injection time (volume) is determined according to the voltage signal (output voltage) . The voltage signal increases when the intake air pressure is high .

THROTTLE POSITION SENSOR (TP SENSOR)
The throttle position sensor is installed on the No . 2 throttle body. The throttle position sensor is a kind of variable resistor which detects the throttle opening angle. The supplied voltage in the sensor is changed to the throttle position voltage which is then sent to the ECM . The basic fuel injection time (volume) is determined according to the voltage signal (output voltage) . The voltage signal increases as the throttle is opened wider.

INTAKE AIR TEMPERATURE SENSOR (IAT SENSOR)
The intake air temperature sensor is installed at the rear side of the air cleaner box .
The sensor detects the intake air temperature in thermistor resistance value . With this resistance value converted to voltage signal, the signal is sent to the ECM . The injection volume increases as intake air temperature decreases . The thermistor resistance value increases when the intake air temperature is low, and decreases when the intake air temperature is high .

ENGINE COOLANT TEMPERATURE SENSOR (ECT SENSOR)
The engine coolant temperature sensor is installed at the thermostat case . The sensor detects the engine coolant temperature in thermistor resistance value, which is then converted to voltage signal and sent to the ECM . The injection volume increases as coolant temperature decreases . The thermistor resistance value increases when the engine coolant temperature is low, and decreases when the engine coolant temperature is high .

ATMOSPHERIC PRESSURE SENSOR (AP SENSOR)
The atmospheric pressure sensor is located under the seat . The sensor detects the atmospheric pressure . The detected pressure is converted into voltage signal and sent to the ECM . The injection time (volume) is controlled according to the voltage signal (output voltage) . The voltage signal increases as the atmospheric pressure rises .

SECONDARY THROTTLE POSITION SENSOR (STP SENSOR)
The secondary throttle position sensor is installed on the No . 2 throttle body . The secondary throttle position sensor is a kind of variable resistor which detects the secondary throttle opening angle . The STP sensor detects the STV actuator movement by the voltage signal which is then sent to the ECM . The ECM determines the ST valve angle based on the operation map. The voltage signal increases as the secondary throttle is opened wider.

 

Sounds like a sensor input malfunction related to heat soak back etc...; causing a poor connection or an issue with the sensor itself.

The SV has inlet pressure and temp throttle position sensors located near the air box. You can raise the tank, pull the air-box cover and see where the sensors are. I you loosen the boots connecting the air-box to the throttle bodies you should be able to check the connections to both sensors and make sure they are latched properly, not corroded etc...

From the manual
SENSORS
INTAKE AIR PRESSURE SENSOR (IAP SENSOR)
The intake air pressure sensor is located at the rear side of the air cleaner box and its vacuum hose is connected to the throttle body. The sensor detects the intake air pressure, which is then converted into voltage signal and sent to the ECM . The basic fuel injection time (volume) is determined according to the voltage signal (output voltage) . The voltage signal increases when the intake air pressure is high .

THROTTLE POSITION SENSOR (TP SENSOR)
The throttle position sensor is installed on the No . 2 throttle body. The throttle position sensor is a kind of variable resistor which detects the throttle opening angle. The supplied voltage in the sensor is changed to the throttle position voltage which is then sent to the ECM . The basic fuel injection time (volume) is determined according to the voltage signal (output voltage) . The voltage signal increases as the throttle is opened wider.

INTAKE AIR TEMPERATURE SENSOR (IAT SENSOR)
The intake air temperature sensor is installed at the rear side of the air cleaner box .
The sensor detects the intake air temperature in thermistor resistance value . With this resistance value converted to voltage signal, the signal is sent to the ECM . The injection volume increases as intake air temperature decreases . The thermistor resistance value increases when the intake air temperature is low, and decreases when the intake air temperature is high .

ENGINE COOLANT TEMPERATURE SENSOR (ECT SENSOR)
The engine coolant temperature sensor is installed at the thermostat case . The sensor detects the engine coolant temperature in thermistor resistance value, which is then converted to voltage signal and sent to the ECM . The injection volume increases as coolant temperature decreases . The thermistor resistance value increases when the engine coolant temperature is low, and decreases when the engine coolant temperature is high .

ATMOSPHERIC PRESSURE SENSOR (AP SENSOR)
The atmospheric pressure sensor is located under the seat . The sensor detects the atmospheric pressure . The detected pressure is converted into voltage signal and sent to the ECM . The injection time (volume) is controlled according to the voltage signal (output voltage) . The voltage signal increases as the atmospheric pressure rises .

SECONDARY THROTTLE POSITION SENSOR (STP SENSOR)
The secondary throttle position sensor is installed on the No . 2 throttle body . The secondary throttle position sensor is a kind of variable resistor which detects the secondary throttle opening angle . The STP sensor detects the STV actuator movement by the voltage signal which is then sent to the ECM . The ECM determines the ST valve angle based on the operation map. The voltage signal increases as the secondary throttle is opened wider.

Does a Powercommander bypass all of these sensors. does anyone know if a powercommander totally ignores all of the computers sensors?