Does anyone know the recommended rpm at idle for my rig? U225 cummins 6bt 12v
Is this the right engine? If so, then "...in drive with AC on 750-800 RPM".
Ram Diesel Problems (http://dodgeram.org/tech/dsl/adjustments/2nd_Gen-Idle.htm)
my engine is a first generation 1991 cummins , thanx ... nice link... I wonder if the idle adjustment is the same place?
Set it as low as possible while still remaining smooth. That likely will be right around 700rpm. On my coach, I had to bump it up after buying it as it rattled everything inside at idle in gear. Using a photo tach I was right around 700-725, if I remember correctly.