Where is a Speed Sensor located at on 2004 Santa Fe

SOURCE: would like to see a diagram of where exactly the

Which engine?? V6 or the 2.4I? The V6 CKP is in the engine block near the flywheel side of the engine (behind and lower right of the exhaust manifold nearest the radiator) A 10mm bolt holds it in place. On the 2.4 4cylinder, the sensor is at the front of the engine behind the Timing Belt cover at the crank shaft. To replace it, you have to remove the timing belt, but you also need to know some technical things to reinstall the belt to be sure you are installing it correctly. Go to http://www.hmaservice.com/ and register. You'll then have access to lots of technical info and manuals, wiring diagrams, etc. about your vehicle.

SOURCE: Where is the throttle/pedal position

Yes you can do it yourself. Here is an image showing the location of sensors on your vehicle (TPS) Throttle Position Sensor...located on the throttle body. Should have 2 screws holding it in place. You can view it in Opera and blow the image up or print the image out and blow it up on a copier if you need to. Hope it helps
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SOURCE: where is the trans speed shaft sensor on a 2001 hyundia santa fe?

There are two speed sensors, Input sensor is located on top of the bell house. Output sensor is located on the firewall side of the bell house.

SOURCE: Knock sensor location

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SOURCE: camshaft position sensor location

crank sensor is a component used in an internal combustion engine to monitor the position or rotational speed of the crankshaft. This information is used by engine management systems to control ignition system timing and other engine parameters. Before electronic crank sensors were available, the distributor would have to be manually adjusted to a timing mark on the engine.

The crank sensor can be used in combination with a similar camshaft position sensor to monitor the relationship between the pistons and valves in the engine, which is particularly important in engines with variable valve timing. It is also commonly the primary source for the measurement of engine speed in revolutions per minute.

Crank sensors in engines are usually comprised of magnets and an inductive coil. They are principally based on the Hall effect. Common mounting locations include the main crank pulley, the flywheel, or occasionally on the crankshaft itself.

Some engines, such as GM's Premium V family utilise crank position sensors which read a reluctor ring integral to the Harmonic Balancer. This is a much more accurate method of determining the position of the crankshaft, and allows the computer to determine within a few degrees the exact position of the crankshaft (and thereby all connected components) at any given time.