The answer is 4 times (1983, 1984, 1986, 1988). Three times with the Rams and once (1988) with the Colts.
4 times
1883
Eric Dickerson with 2,105.
1984
Only 2 Colts players have led the league in rushing since 1984, Eric Dickerson in 1988, and Edgerrin James in 1999, and in 2000.
Eric dickerson
Eric Dickerson amassed 7,245 yards as a Ram.
Eric Dickerson in 1988, and Edgerrin James in 1999, and 2000.
Eric Dickerson of the 1983 Los Angeles Rams with 1808.
Eric Dickerson of the 1984 Los Angeles Rams with 2,105 yards.
Eric Dickerson is retired, and is residing in Texas.
Michael Dickerson While Eric (Michael is a basketball player) Dickerson holds the record for the most yards rushed in a season with 2105, it is Emmitt Smith who holds the record for most rushing yards in a career with 18,355. Emmit Smith. Followed by Walter Payton who is the best running back ever to play the game. Rest in Peace Walter.