That's how you're taught - use the tach to determine when to shift, and the speedometer for recovery speed if you lose a gear. After a while, you get to the point where you know when to shift by the sound of the motor.
check the fuses.
check for an open fuse or check the vss (vehicle speed sensor)
No such thing. Are you asking about a Super Ten transmission, or a 13 speed transmission?
If you are driving a loaded tractor trailer, you would downshift to gain more power when going up hill and downshift to control speed when going down hill.
shift pattern 210 john derre garden tractor
If you have a low speed such as an 8-10 it is a simple double clutch and shift. But, if you have 13-18 you will have a low and high range switch. 18 Speed is simple for me It is in low range shift 1-4 at 4 switch to high range. Shift 4-8. So, in reality you are not actually shifting 18 times.
TCM Malfunction, And/Or Speedometer Sensor Malfunction.
The speed sensor sends a signal to the speedometer to show the correct speed and it sends a signal to the transmission telling when to shift. If the speed sensor is bad the speedometer will not work and the transmission will not shift correctly.
Std. transmission could be "shift" light
If your speedometer isn't working then that gear needs replaced before it'll shift
Replace your speedometer sensor. I just had mine replaced in my '04 Impala. The sensor tells the tranny when to shift. It's located right in front of the transmission.
This part sits on top of the transmission. Look just behind the intake manifold. It is not easy to get to. Suggest you get a transmission shop to handle the work...probably less than $200. If you are trying to do this to correct shift problems, suggest you on wrong trail...try a shift control unit, which is located near the speed sensor. Unless your tachometer and speedometer are acting up, look at the shift control unit. It does seem to go out after 100k.