destes, If the timing belt or chain(whatever engine you have) is off, you would mostly likely hear the engine cranking really fast and it would not sound anywhere near "normal" because there would be no compression. You do not seem to indicate such so I am thinking your timing chain/belt is fine.
You really have a "good" problem. That is, the engine has quit altogether and is not intermittent. Those intermittent problems can be really hard to fix. So try these steps but only if you feel mechanically competent to do so.
Isolate the issue between spark and fuel. To do this, get a can of starter fluid from the local auto store and spritz a couple of shots into the intake snout (where the air filter is) and give it a crank. Take precautions and realize that the starter fluid is highly flammable. So don't overdo it (and perform this outside) but don't be frozen with fear either. If the engine makes ANY attempt to fire, then you have a fuel delivery problem. If not, you may have a spark issue. That could be a sensor as someone mentioned. But first, try to isolate the cause.
Remember to think "simple". It is SO easy to start imagining the worst sort of scenario and it is usually something rather simple.
Last edited by 98t&c; 01-08-2012 at 05:14 PM.
98 Town&Country LXI, 3.8L, 192k miles (sold)