It's located with the MAF
Where is the ford ranger 2004 revcounter sensor conected
yes yes
The O2 sensor after the catalytic converter.
yes
It doesn't have a knock sensor on the 4.0 L OHV in a 1993 Ranger ( my 1995 Ford Explorer 4.0 L OHV engine doesn't have a knock sensor either )
Radar
where is the tensioner for the serpentine belt on a 2004 ford ranger
Some of the 1992 Rangers had the camshaft position sensor on top of the engine in the same hole where the distributor used to be. Some Ranger engines did not use a camshaft sensor at all.
Drivers side engine block above starter.
It doesn't have one .It has a mass air flow sensor in the air intake tube to the air cleaner .
On my 96 ranger its on the passenger side basically on the firewall
inside the air cleaner housing