Trouble code P0174 means: System too lean (Bank 2)
4.0 liter v6 ======================================================== The above answer is partially correct If you have a 1998 Ford Explorer ( XLT trim ) You could have a 4.0 liter Single Over Head Cam ( SOHC ) V6 engine or a 5.0 liter V8 engine ( which is an Over Head Valve / pushrod design engine )
On a 1998 Ford Explorer , 5.0 liter V8 engine : Bank 1 is the passenger side of the engine Sensor 1 would be close to the engine BEFORE the exhaust enters the catalytic converter
According to the 1998 Ford Explorer Owner Guide : For the 4.0 liter V6 engine , EFI and SOHC versions ( Motorcraft FL-1A ) For the 5.0 liter V8 engine ( Motorcraft FL-820S )
P0174 - SYSTEM TOO LEAN ( Bank 2 - drivers side of engine )
The Ford 4.0 liter OHV , V6 engine has ( 1 ) timing chain ( but the 1998 Ford Explorer XLT model , if it has the 4.0 liter V6 engine , would have the SOHC engine which has ( 3 ) timing chains )
( 6 ) for the 4.0 liter V6 engine ( OHV and SOHC ) ( 8 ) for the 5.0 liter V8 engine
The 4.0 liter OHV engine is rated at ( 160 horsepower ) The 4.0 liter SOHC engine is rated at ( 205 horsepower )
The Ford 4.0 liter SOHC engine has ( 3 ) timing CHAINS
( .054 inch ) for the 4.0 liter OHV , 4.0 liter SOHC , and the 5.0 liter V8 engine
The 4.0 liter - OHV - engine has ( 1 ) timing chain The 4.0 liter - SOHC - engine has ( 3 ) timing chains The 5.0 liter - V8 engine - has ( 1 ) timing chain
The 1998 Ford Explorer 5.0 liter engine IAT sensor is located between the engine and the air filter box. The IAT sensor will be on the air intake hose.
For a 1998 Ford Explorer : The 4.0 liter V6 engine ( either the EFI or the SOHC version ) ( have 6 engine cylinders )