I have no idea what is meant by "spark sensor." There is no such thing as a spark sensor. TDC is simply when the #1 cylinder piston is at the top of it's compression stroke. TDC is a mechanical term, and is not related to anything electrical or electronic as in the case of a sensor.
The speed sensor on a 99 Ranger 2.5 liter 2WD with an automatic transmission is in the rear differential. It is included with the ABS sensor in one unit.
the o2 sensor is located on the exaust manifold
The O2 sensor after the catalytic converter.
Where is the camshaft position sensor located on a 1999 ford ranger 4.0 liter engine
The 1999 Ford Ranger 3.0 liter engine throttle positioning sensor is located on the cylinder head. The sensor will be near the middle of the cylinder head.
where is a transmission sensor that may cause an 02 ford ranger 4.0 liter to feel as though it may be skipping during acceleration?
no
motorcraft.com has a picture of the sensor and it is threaded , so it's threaded into the upper intake manifold somewhere ( at least that partially answers your question )
where is the location of 98 Kia Sportage 4x4 2.0 liter cam sensor?
The 2001 Ford Ranger 4.0 liter V-6 engine map sensor is located on the firewall in the engine compartment. The map sensor will be on the drivers side of the firewall.
It just has ( 1 ) oxygen sensor , before the catalytic converter ( upstream )
On your 2003 Ford Ranger , 4.0 liter SOHC , V6 : Bank 1 is the passenger side of the engine Sensor 1 would be close to the engine BEFORE the exhaust enters the catalytic converter Sensor 2 would be AFTER the exhaust exits the catalytic converter