Guide to Transmission Maintenance & Repairs

Your car’s transmission moves power from the engine to the wheels. Because transmission plays an important role, it should be maintained regularly and properly. It is one of the most complex car parts and should be repaired and maintained by an expert.

Signs It’s Time to Take Your Car to a Transmission Repair Expert

Unless you hit a bump or pothole or were involved in a car accident, your transmission won’t develop problems overnight. Common transmission problems develop over time. Before your car’s transmission fails, you will notice these warning signs of transmission problems:

      Rough shifting or jerking transmission

      A foul, burning odor

      The steering wheel feels wobbly while driving

      Slipping gears

      Loud, unusual whining, grinding, or gurgling noises

      The vehicle jerks when accelerating

If you notice these signs, take your car to your mechanic immediately.

Common Transmission Repairs and Maintenance Tasks 

Some common transmission repairs and maintenance tasks that mechanics perform almost every day in their garage are resealing leaks, replacing worn-out parts, and replacing a defective solenoid.

Resealing Leaks  

A faulty transmission pan or gasket can cause transmission fluid leaks, damaged fluid lines or seals, and dirty transmission fluid. To fix minor leaks, mechanics reseal the transmission box. Some common signs your transmission leaks fluid are strange vibrations, clunking noises, rough or slipping transmission, and red fluid under your car.

Replacing Worn-out Parts

Transmission parts can wear out over time. If one or more parts of your transmission have worn out, replace them promptly before they lead to major problems. Timely replacements will save you money on costly repairs down the road.

Replacing a Defective Solenoid

Though a small-sized part, the transmission solenoid has a crucial role. It controls fluid flow into and throughout the transmission. Some common causes of a faulty transmission solenoid include electrical errors and dirty transmission fluid. A solenoid can also stop working when the valve becomes stuck in an open or closed position.

A defective solenoid can cause problems such as failure to downshift and shifting delays. If left unaddressed, these issues can cause major damage to the transmission and engine. Fortunately, it doesn’t cost much to repair a defective solenoid.

Major Repairs

If addressed, a minor transmission problem can snowball into a major issue leading to a significant repair. Major transmission repairs often involve removing the transmission box, disassembling the transmission, fixing the problem, reassembling the transmission box, and finally placing the transmission back in its place. Such repairs are labor-intensive, complicated, and hence costly.

Some repairs may involve reconstructing the transmission. Here are steps to reconstructing a car’s transmission:

      Remove the transmission and disassemble it

      Thoroughly clean all transmission parts

      Replace broken or worn-out parts

      Replace or reseal any damaged or leaking seals  

      Repair or replace damaged or old electrical components

      Place the rebuilt transmission into the vehicle

GreenTech Automotive offers a wide range of car repair services. Our mechanics have an unparalleled ability to develop customized repair and maintenance solutions. To schedule car maintenance in Sonoma County, call (707) 545-7076.