Second generation models of the Dodge Ram 2500 produced from 1994 to 1997 with the diesel option are considered by some fans to be the holy grail of Ram oil-burning trucks, due to it being the last year to offer the specific version of the Cummins it carries. The diesel engine option in 1998 to 2002 Ram models was upgraded to a 24-valve version of the Cummins that received an updated turbo and pistons. While it produced fewer emissions and slightly better power and torque, an electric-rotary fuel pump replaced the mechanical fuel pump in the 12-valve Cummins. Unfortunately, the electric-rotary pump (Bosch VP44) is known to fail, while the older mechanical fuel pump (Bosch P7100) has proven to be both more reliable and easier for enthusiasts to modify for better flow.
According to Fuelly, a 1997 Dodge Ram 2500 can be expected to average 13.7 miles per gallon. Longevity and durability are strong points for the 1997 Dodge Ram 2500 Cummins, according to “CarComplaints”, with 28 reported problems compared with 92 reported problems for the 1999 model. With its trustworthy engine, roomy interior, stout build, and few reported issues, the 1997 Dodge Ram 2500 Cummins diesel could be a good choice for the owner who needs to truck things and do them well.