MANUAL TRANSMISSION PROBLEMS

Manual transmission issues can develop because of high mileage, abuse, or lack of proper maintenance; however, they are rather rare. Most manual transmission problems originate not with the transmission itself, but from connected parts like the clutch assembly, stabilizer links, or driveline: the parts that transmit turning power from the transmission to the wheels.

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Symptoms of a Bad Transmission

Here are some symptoms which will indicate a worn-out transmission:

 

Odd sounds (whirring, squealing, bumping, or thumping)

The most common cause of a loud transmission is low oil, causing the gears or internal assembly to hum or whir. If a loud transmission does have enough oil, the lubricant could also be contaminated with metal shaving. Insufficient or contaminated oil might cause the transmission to become noisy in some or all of the gears, however, if you hear noises in a specific gear, that gear’s teeth or synchronizer could also be worn or broken.

Sources inside the transmission that may cause noise:

manual transmission parts and function

Some noises that seem to come from the transmission are actually coming from an outside, possibly related source:

The Transmission Makes a Grinding Noise

Problems with the transmission may also be revealed through a grinding noise. A grinding noise might come from clashing gears. The clashing might happen due to linkage issues like wear or need of adjustment. Other potential sources may well be a worn or broken synchronizer, shift fork, or rail and bearing shafts. If you can hear the gears clashing only when downshifting, the problem might come from the synchronizer. However, a grinding noise can also come from a dragging clutch.

 

The Transmission Jumps Into Neutral

This is a common problem on worn-out transmissions. You shift into gear, and the transmission jumps out of gear. There might be other causes for this problem, besides a worn-out transmission. A common problem is a worn out/stretched shift linkage. A stretched linkage may be caused by a broken engine or transmission mount. An external linkage can wear out or become loose, causing the transmission to jump out of gear. Look for rust and binding. You can attempt to adjust the linkage. In most cases, you’ll need to rebuild or replace that part of the assembly.

You may be dealing with a weak or broken spring within the shift rail. In an internal shift linkage, the spring is part of the spring-loaded ball that locks the transmission into gear. If the ball slips out of the notch, the transmission can jump out of gear. You may also be dealing with a worn-out pilot bearing (the gap causes the input shaft to vibrate, which causes the shift forks or synchronizers to move). You may have issues with a worn synchronizer or shift fork assembly or other internal parts.

Other potential causes to consider:

 

It’s hard to Shift Gears

This problem happens when you find it hard to change the shift lever from one gear to another. Usually, this points to a problem with a loose linkage, worn shift cables or worn bearings.

Other causes for a hard-to-shift manual transmission include:

 

The Transmission Is Stuck in gear

You may notice that you just cannot get the transmission out of gear. This symptom might indicate:

 

The Transmission will not Get Into Gear

When you have trouble getting the transmission into gear, examine the shift linkage for adjustment, looseness or damage. Keep in mind that failure to get into gear may also be caused by the clutch, if the clutch is not fully releasing or has alternative issues. The clutch may need adjustment.

 

Leak From the Transmission

Manual transmission leaks are often caused by:

 

Trust your Audi and Volkswagen Specialists at VAG Spec Centre to help and to determine the best and fastest route te get you back on the road!

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