How can I make my automatic transmission shift smoother?

There are 6 ways to improve automatic transmission performance and reliability. These are servicing the transmission, changing driving habits, driving with lower gears when loaded, maintaining engine performance, having proper alignment of tires, and having the correct tire size.
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What causes hard shifting automatic transmission?

Causes of rough shifting include: Transmission Fluid Low or Poor Condition – Vehicles low on transmission fluid or that are operating with worn out or contaminated fluid are likely to experience hard shift conditions.
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Does transmission fluid make shifting smoother?

Though changing transmission fluid can't fix mechanical problems, it does make for smoother shifts and can extend the life of your transmission. And even when manufacturers recommend fluid change intervals of 150,000 miles under normal conditions, it may be a good idea to change it more frequently.
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Why is my car not shifting gears smoothly?

One main reason why the automatic transmission in your car may not be shifting smoothly is the ECM is going bad. It is best to get this checked out by an experienced auto mechanic technician who understands the electrical system. Other indicators include bad connections within, or worn out sensors and faulty solenoids.
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Why does my automatic transmission shift hard from 1st to 2nd?

If your transmission shifting hard from 1st to 2nd could be attributed to a problem with the shifter cable, then it either needs adjustment or replacement. You can adjust the cable by loosening its mounting nut and turning the adjuster barrel clockwise in order to apply more pressure on the solenoid.
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Make your Transmission Shift better



What causes a transmission to hesitate?

When the temperature drops, transmission fluids with poor cold-flow properties can thicken and cause elongated and hard shifts until the fluid has warmed up enough to flow properly. Switching to a high-quality synthetic transmission fluid will help.
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What is the best additive for transmission slipping?

Our pick for the best transmission additive is the Prolong Super Lubricants PSL15000. It is one of the best transmission additives on the market. It reduces leaks, shudders, slippage, and sludge buildup. For a less pricey option, consider the Lucas LUC10009.
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How do I stop my automatic transmission from slipping?

The easiest way to prevent transmission from slipping is to change the transmission fluid and filter often or after your specific car model's specified schedule. Check the fluid level once a month and repair any leaks from the transmission to prevent a low transmission fluid level.
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Does Lucas transmission additive really work?

The additives in Lucas Transmission Fix do seem to improve gear engagement, but stopping transmission leaks tends to be hit or miss (it really depends on the severity of the leak). The bottom line is, Lucas can help with problems normally associated with worn, high mileage transmissions.
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Do automatic transmission additives work?

Transmission additives supposedly fix erratic shifting, leaks and other problems. However, testing has shown they can make transmission performance worse.
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Should you be able to feel an automatic transmission shift?

Your automatic transmission normally operates smoothly when shifting from gear to gear. You shouldn't feel any grinding, slipping or shaking sensations as your car switches gears. When a transmission is starting to have problems, these symptoms can seem insignificant.
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Can dirty transmission fluid cause shifting problems?

3. Shifting Issues. When the transmission fluid isn't clean or is blocked by a clogged filter, the internal components won't have the lubrication they require to function properly. This could lead to shifting issues, grinding gears, slipping transmission or other common symptoms of transmission problems.
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Will seafoam help my transmission?

Sea Foam's Trans Tune works fast to reliquefy varnish deposits from valve bodies, solenoids and shift actuators. Before you spend $$$$ on a new transmission, try adding a can of Trans Tune to your fluid filler – super easy! Also works great as a fluid cleaner and conditioner, or as a pre-flush cleaner.
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Where do you put transmission additives?

How Do I Add Treatment To My Transmission. Unlike oil, transmission additives are added to the engine via the dipstick hole. This takes a special funnel and some patience, and you need to do it while the car is running. Transmission fluids and additives can be very thick.
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Can you use Marvel Mystery oil in automatic transmissions?

Answer: Yes, MMO is safe for usage in automatic transmissions. Use no more than 16 ounces of MMO in the automatic transmission.
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Do you have to drain transmission fluid to add Lucas?

bottle of Lucas Transmission Fix can be added to existing fluid without draining. A second bottle may be necessary in large or badly worn transmissions. In smaller transmissions (compact or sub-compact vehicles), use 12 oz.
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Why does my transmission slip when I accelerate?

Transmission gears wear out and start slipping.

Worn or rounded out gears don't properly link together so this can cause a bumpy shift and slippage as you accelerate and drive.
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Can too much transmission fluid cause slipping?

Excess transmission fluid can cause several adverse effects on the transmission. If the fluid stays above the recommended level, it can cause it to start mixing with air. This can lead to gear slippage, hard shifting, and other transmission shifting issues.
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What are the signs of low transmission fluid?

In the meantime, it's a good idea to familiarize yourself with the tell-tale signs that you may be low on transmission fluid.
  • Noises. ...
  • Burning Smell. ...
  • Transmission Leaks. ...
  • Slipping Gears. ...
  • Slow Gear Engagement. ...
  • Vehicle Accelerates Poorly. ...
  • Check Engine or Transmission Warning Light Is On.
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