Unlock? You'd have to be more specific about what the exact problem is. As is, we're not sure what you mean.
If you're talking about the 4.0 L V6 ( NO ) The 2000 Ford Ranger 4.0 L was the OHV and the 2004 Ford Ranger uses the 4.0 L - SOHC - engine
The Ford 4.0 L - OHV - V6 engine has ( 1 ) timing chain The Ford 4.0 L - SOHC - V6 engine has ( 3 ) timing chains The Ford 5.0 L - V8 engine has ( 1 ) timing chain
The 2.0 L - SOHC - IS AN INTERFERENCE ENGINE The 2.0 L - DOHC - IS NOT an interference engine
Depends on the engine. The 2.0L should run 37-46 psi, and the 2.5 L should run 30-36 psi.
The Ford 4.0 L - OHV - V6 engine has ( 1 ) timing CHAIN The Ford 4.0 L - SOHC - V6 engine has ( 3 ) timing CHAINS
No , same part number - Motorcraft FL820S 2002 Ford Explorer - 4.0 L - SOHC - V6 engine ( FL820S ) 2003 Ford Explorer - 4.0 L - SOHC - V6 engine ( FL820S ) 2002 Ford Explorer - 4.6 L - V8 engine ( FL820S ) 2003 Ford Explorer - 4.6 L - V8 engine ( FL820S ) according to the 2002 and 2003 Ford Explorer owners manuals
The 2004 Ford Explorer has a 4.0 L base engine size.
The 2002 Ford Taurus has a 3.0 L base engine size.
The 2012 Ford Mustang has a 3.7 L base engine size.
The 2014 Ford Fusion has a 2.5 L base engine size.
The 2012 Ford Explorer has a 3.5 L base engine size.
The 2003 Ford Escape has a 2.0 L base engine size.