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Henderson Transmission Service & Repair


If you are having transmission problems, don’t despair, it may not be a major issue. We have seen numerous times when a customer comes to us in a panic, expecting the worst because of a shifting problem. Then, after inspecting the vehicle, we find the problem was NOT a major problem.

Transmission Repairs and Rebuilding are very expensive. HOWEVER, there are many minor causes of transmission problems that might scare you needlessly. Here are just a few that we have seen that could be at the root of your transmission or shifting problem.


Transmission Fluid Leaks Or Low Fluid Level

Your vehicle may have a small or large leak of the Transmission Fluid. There are a few causes of this and the fix can often be quite affordable.

Loose Vacuum Lines

When this happens usually, your transmission your transmission won’t shift at all. Of course, a non-shifting transmission can scare you, but if this is the cause, the cure is not painful at all.

Loose Linkages Or Cables In Need Of Adjustment

These run from the transmission to the throttle body. If one comes out of adjustment, you may experience shifting issues such as no shifting, hard shifting or late shifting.

Solenoid Problems

The transmission contains shifting solenoids inside (and on some models, outside). The symptoms from this transmission problem cause a wide array of shifting problems like not shifting into particular gears. Usually, a bad solenoid gives problems with specific gears or sets of gears like 1st, 2nd and 3rd.

Vehicle Computer Malfunction

Today’s cars all have computer in them to help coordinate all the functions in the car. But the computers can develop problems and seem to cause you transmission problems. Symptoms from a computer problem range from no shifting to erratic shifting.

Defective Transmission Sensors

Each car has sensors that help tell the transmission when to shift. Fixing this problem is much easier and more affordable than a new transmission.

Bad Transmission Fluid

There are occasions that a fluid flush and change fix your transmission problems. In fact, we often like to do this to see if it solves the problem affordably. However, if we find that it doesn’t help, we remove the charges if we do a major transmission repair or rebuild. It’s often a smarter first step because it MAY fix the problem.


Transmission Troubles Due To Fluid Quality

Transmission problems due to prolonged bad fluid often results in major damage. The purpose of the transmission fluid is to protect the internal parts from damage by cooling and lubricating helping to keep it operating smoothly and efficiently. However, just like motor oil, transmission fluid breaks down with time and use. Once transmission fluid loses its properties to protect the inside of the transmission, your transmission degrades quickly.

Usually when you have transmission problems due to neglected fluid, the problem is severe and expensive to repair. That is why it is less expensive to perform periodic Transmission Services. Because seals start harden inside. This causes delays going into gear, shifting issues, and eventually (or sometimes suddenly) complete internal transmission breakdown.

How Often Should Transmission Fluid Be Flushed And Changed?

Your car’s owner manual lists the recommended service intervals. These are the minimums that the manufacturer requires so you remain covered under the warranty period. It’s important to point out that the manufacturer has a balancing act when they specify these intervals. On one hand they want you to protect the transmission from problems so they don’t have to pay excessively for repairs. On the other hand they don’t want to be known for requiring services at intervals that are too frequent. The latter issue causes damage to sales appeals. Car Care Council, recommendations are every 24,000 miles or every two years for longest transmission life.


Many auto repair shops and specialty shops do not perform a thorough transmission flush service. They simply drain some of the old fluid and add back in new fluid.  Certainly this is better than only old neglected fluid, but it only helps a little.


TransTech III MTT1100What is needed is to completely flush out the old fluid from the transmission, then replace it with the right fluid and top it off with a transmission fluid additive that adds extra protection. The way we usually do this is by adding a special flushing fluid that increases the temperature of the fluid. This helps suspend contaminants that are adhering to the walls of the transmission.

The TransTech III MTT1100 is then hooked up to the transmission lines that lead to the vehicles external cooler. With the engine idling, the unit will receive the used fluid expelled by the vehicle’s transmission fluid pump through one of the connected hoses, and supplies new fluid through the second hose connected to the other side of the disconnected transmission cooling line.


Here are a few things you can do to help reduce heat, and keep your transmission working longer

Avoid Jackrabbit Starts

Hard accelerations create a lot of friction and heat in the transmission. Take it easy on the gas and your transmission will live longer.

Help The Transmission Shift

Most of the friction and wear in the transmission takes place during the shifts. Get to know when your transmission shifts normally. Then, just before the shift, back off on the gas just a bit. That will reduce the load on the interior components, and eliminate much of the friction during the shift.

Keep the Cooling System In Good Order

Most car radiators also provide cooling for your transmission. And heat damage will take place in the transmission long before the engine appears to overheat. So regular cooling system service can help your transmission run cooler… and last longer.

Add An External Transmission Cooler

If you travel a lot in extremely high temperatures or carry a lot of weight in your car, an auxiliary transmission cooler is a great way to reduce heat and add years to your transmission’s life.