If your manual transmission vehicle won't go into gear, it's possible that the shifter cable is to blame. The shifter cable is what connects the shift lever to the transmission, and over time they can become stretched or frayed, which can cause shifting problems. Here are a few signs that your shifter cable may be going bad:
1. Difficulty shifting gears - If you're having trouble getting your car into the gear you want, especially if it feels like the gears are grinding, this could be a sign that your shifter cable is damaged and needs to be replaced.
2. Inconsistent shifting - If your car seems to randomly pop out of gear or have trouble staying in one particular gear, this is another symptom of a worn-out shifter cable.
3. Transmission fluid leaks - If you notice transmission fluid leaking from around the area where the shifter cable enters the transmission, this means the rubber seal on the end of the cable is damaged and needs to be replaced.
4. visible damage to the shifter cable - If you can see that the outer casing of your shifter cable is frayed or broken, then it definitely needs to be replaced as soon as possible.