A 97 Dodge Ram 1500 5.9 engine will have no spark if the ignition coil is defective or it is not receiving enough power. This will prevent the engine from starting or running.
Other causes include cam and crank sensors, pcm, bad coil wire,
8
spark pluggs
.040 inch
.035 inch
5/8 inch
.040 inch
1997 dodge ram 1500 2wd 1500 engine block heater location
The gap should be 0.040".
.035 in
You need to put a little more detail in. What engine do you have, and what engine did the 99 have?
They are under the coils, which are located next to the injectors.
The Dodge ram 1500 rough idle can because by a bad spark plug or spark plug wire. The rough idle can also because by a bad camshaft.