On a 2002 Ford E-150 , 4.2 liter V6 engine : Bank 1 is the PASSENGER SIDE of the engine
On a 2002 Ford E-150 : Bank 1 is the passenger side of the engine ( V6 and V8 engines ) Sensor 1 would be close to the engine BEFORE the exhaust enters the catalytic converter ( upstream sensor )
4 - 8 3 - 7 2 - 6 1 - 5 front of Ford E-150
On a 1999 Ford E-150 : For the GASOLINE engines ( V6 , V8 ,, V10 ) Bank 1 is the passenger side of the engine and bank 2 is the drivers side
On a 2002 Ford Taurus : firewall 1-----2-----3 ( bank 1 ) 4-----5-----6 ( bank 2 ) front of vehicle > driver
On a 2002 Ford Taurus : firewall 1-----2-----3 ( bank 1 ) 4-----5-----6 ( bank 2 ) front of vehicle > driver
On a 2002 Ford E-150 ( 4.6 and 5.4 litre V8 engines ) 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
The passenger side
firewall #1------#2------#3 cylinders ( BANK 1 ) #4------#5------#6 cylinders ( BANK 2 ) front of Ford Windstar
Bank 1 is the passenger side of the engine in your E-150 Sensor 1 is between the engine and the catalytic converter ( upstream sensor )
On a 2002 Ford E-150 , 4.2 liter V6 engine : The engine cylinder locations are numbered : 3 - 6 2 - 5 1 - 4 front of vehicle
On a 2002 Ford Thunderbird : Bank 1 is the passenger side of the 3.9 liter V8 engine Sensor 1 would be close to the engine BEFORE the exhaust enters the catalytic converter