Three problems related to ignition have been reported for the 1997 Dodge Ram 1500. The most recently reported issues are listed below.
No summary listed for above vehicle.
Intermitant surging in engine resulting in driveline clunk or harshness in transmission.
Not sure, but sounds to me like your NHTSA item number sb049106(electrical system:ignition:electronic control unit). There is a surge of r. P. M. `s of 2000 or 3000 and a grinding or "harshness" sound at different times.