My 99 E300 actual value #21 is 42 at cold start idle (ambient temp 74F) in park.

My chart says #21 is engine speed and that rpm's are counted in 100's.

My tach needle shows my idle is ~675/700rpm which feels correct (although maybe a tad low).

Is my chart wrong or is the sensor that value #21 is connected to at fault?

__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)