I'll give you a general idea of the location of those sensors; but I
suggest that you go to Rock Auto's website, at the address referenced
below, and look up your truck's year and model in their online catalog.
There will be photos of the air charge temperature sensor, oxygen
sensor, and throttle position sensor in the "emission" category. And
there will be a photo of the coolant temperature sensor in the "cooling
system" category. To see these photos; just click on the blue icon with
the letter "i" in it, which follows the part number listing for an item.
The air charge temperature sensor is located in the air filter housing.
The oxygen sensors are located at different points in the exhaust pipes
and manifolds. There may be two, three, or four of them on your truck.
Some of them have different numbers of wires in the connectors. The
ones which could could create the no spark problem will have four wires.
The throttle position sensor is located in the throttle body; which is attached to the intake manifold.
The manifold pressure sensor is probably located on the firewall, or
mounted on a bracket somewhere on top of the engine. It will have an
electrical plug, and a vacuum hose which comes from the intake manifold.
I hope this helps. I'm posting a copy of this response in both of the
locations where your questions are located; but please heed Steve's
instructions about keeping all of your responses in the same thread, by
clicking on the "answer this question" button underneath the original
question, to post additional responses in the future.