Engine Runs, But Vehicle Does Not Move In Any Gear

Engine runs, but vehicle does not move in any gear

Diagnostic Procedure:

1. Low ATF level

2. Shift cable broken or out of adjustment

3. Connection between shift cable and transmission or shift lever is worn

4. Axle disengaged

5. ATF pump worn or binding

6. Regulator valve stuck or spring worn

7. ATF strainer clogged

8. Foreign material in separator plate orifice

9. Mainshaft worn or damaged

10. Countershaft worn or damaged

11. Final gears worn or damaged

12. Park mechanism defective

13. Selector control shaft worn or damaged

14. Drive plate defective

15. Torque converter defective

16. Transmission-to-engine assembly error

Also check for:

- Check the ATF level, and check the ATF cooler line for leaks and loose connections. If necessary, clean the ATF cooler lines.
- Check for a loose shift cable at the shift lever and the transmission control lever.
- Check the stall speed.
- Check the line pressure.
- Improper alignment of the ATF pump and the torque converter housing may cause ATF pump seizure. The symptoms are mostly an rpm-related ticking noise or a high pitched squeak.
- Check the regulator valve in the regulator valve body for free movement, and check the valve springs for wear and damage.
- Check the ATF strainer for debris. If the strainer is clogged, find the damaged components that caused the debris. If no cause for contamination is found, replace the torque converter.
- Check for a clogged orifice in the separator plate. If the orifice is clogged, remove it and clean the separator plate orifice.
- Inspect the differential pinion gears for wear. If the differential pinion gears are worn, replace the differential assembly, replace the ATF strainer, thoroughly clean the transmission, and clean the cooler and lines.
- Replace the torque converter.
- Be careful not to damage the torque converter housing when replacing the main ball bearing. You may also damage the ATF pump when you torque down the main valve body. This will cause ATF pump seizure, use the proper tools.
- Install the main seal flush with the torque converter housing. If you push it into the torque converter housing until it bottoms out, it will block the fluid return passage and result in damage.
- Inspect the countershaft and the secondary shaft for wear and damage.
- Inspect the park mechanism at the park lever link, park gear, and 2nd gears.
- Check the drive plate for wear and damage, replace the drive plate if it is worn or damaged.
- Check for a misinstalled transmission.