Forum Discussion

Canadian_Rainbi's avatar
Mar 13, 2016

Tach reading low

Not sure where the problem lies. 2002 Itasca Horison, Cummins 300 HP 5.9 ISB, Allison 6 speed transd, Freightliner chassis Normally at 60 MPH the tach reads about 1700-1800 rpm. Noticed yeste...