Here are four possible causes for noise in the transmission of a Ford Ranger, an explanation for each, and an approximate budget for each possible breakdown: Loose or worn drive shaft: The drive shaft is responsible for transmitting power from the engine to the wheels. If it is loose or worn, it can cause a knocking or rattling noise in the transmission. This is often caused by worn or damaged bearings in the drive shaft or a misaligned or damaged universal joint. Approximate budget: $500-$700. Worn or damaged gears: The gears in the transmission are responsible for shifting gears and controlling the speed and torque of the vehicle. If they are worn or damaged, they can cause a grinding or growling noise in the transmission. This is often caused by excessive wear and tear or damage from improper shifting. Approximate budget: $1500-$3000. Low transmission fluid: Transmission fluid provides lubrication and cooling for the gears and other components in the transmission. If the fluid is low, it can cause the gears to grind and wear more quickly, leading to a noisy transmission. This is often caused by a leak in the transmission system or not checking and topping off the fluid regularly. Approximate budget: $100-$200. Worn or damaged clutch: If the clutch is worn or damaged, it can cause a slipping or whining noise in the transmission. This is often caused by excessive use, such as driving in stop-and-go traffic, or a worn or damaged clutch plate. Approximate budget: $1000-$1500. If you are experiencing a noise in your Ford Ranger transmission, it is recommended that you take it to a qualified mechanic for a proper diagnosis and repair. Driving with a noisy transmission can lead to further damage and potentially costly repairs. Additionally, low transmission fluid or a worn clutch could cause the transmission to fail, which would result in the need for a full transmission rebuild or replacement. The cost for these repairs can be substantial, so it is important to address the issue promptly.roper diagnosis and repair. Driving with a noisy transmission can lead to further damage and potentially costly repairs. Additionally, low transmission fluid or a worn clutch could cause the transmission to fail, which would result in the need for a full transmission rebuild or replacement.