2004 Mitsubishi Triton Pricing and Specs

In many cases like this, the clutch is the culprit. The problem appears as though it’s the gearbox at fault, but the reality is that it’s the clutch not releasing properly that is preventing you shifting gears cleanly and easily. When the clutch is either worn or out of adjustment, it can remain partly engaged even when your foot is fully on the clutch pedal. When that happens, the gears can be very difficult to select.

Try this: The next time a gear becomes hard to select, turn the engine off and try it again. If the gear suddenly slips into place easily, then you’re probably looking at a worn clutch or one that is out of adjustment. Poor adjustment can be the result of low clutch fluid levels (in a vehicle with a hydraulic clutch) or a cable or linkage that is poorly adjusted. Your vehicle has a hydraulic clutch, so a leak from either the master cylinder, slave cylinder or any of the plumbing could have allowed the fluid level to drop to the point where the clutch is no longer disengaging fully. This is precisely where I’d start looking in your case.

Remember, however, that while a worn clutch might be the most likely cause, that doesn’t rule out a problem with the transmission internally or a problem in the gear selector mechanism.

The cable that drives the speedometer is a likely candidate for this in some cars, Aaron, but mainly older ones than your Triton. The cable will eventually run out of lubricant, at which point it can bind up and won’t turn smoothly (the cause of the hyperactive needle) while also making a dry squawking noise (the budgies). But, from memory, your car has an electronically-driven speedo, so the cause is more likely that the speedometer itself is worn out and causing internal friction (for the same set of symptoms).