Transmission Does Not Shift

Transmission does not shift

Input shaft (mainshaft) speed sensor defective

Output shaft (countershaft) speed sensor defective

Engine output low

Notes

Check the input shaft (mainshaft) speed sensor and the output shaft (countershaft) speed sensor installation.

Notes

Check the engine control system.

Notes

Check the fuel pressure Testing and Inspection.

Notes

Check for exhaust restrictions.

Notes

Check for intake restrictions.