Difficulty with the Torque Converter — A torque converter receives the power from the engine and converts it into torque that the transmission uses to send to the wheels. Over time the converters can wear down, preventing the flow of fluid, which results in slipping among other problems.
Failed Solenoid — The solenoid is an electro-hydraulic valve that controls the flow of fluid throughout the transmission. Damage or failure to this component can cause the release of too much or too little fluid into the system.
Rough Shifting or Jerking Transmission A car that is experiencing rough shifting may have trouble accelerating, struggle to change gears, or lack a smooth transition. 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.
Lack of adequate lubrication within the transmission can cause several problems, including hard shifting. The fluid in your transmission should appear clean, light red in color, and somewhat transparent. Vacuum Troubles — On older vehicles, the transmission would know when to shift based on the assistance of a vacuum modulator valve. The valve determines the load of the engine via a hose, called the vacuum line, that connects to the intake, measuring the amount of vacuum within the engine.
A bent, blocked, or detached vacuum line can alter the pressure in the transmission producing a rough shift. Faulty Sensor — Many vehicles today are equipped with loads of sensors that communicate to their internal computers, including some that influence the transmission to shift. Maybe take a look there.
But I suppose such a thing as downshifting to go slower is possible, especially with newer auto-transmissions becoming more and more computer controlled. It maintains vehicle speed by automatically implementing a shift schedule that uses the engine and the transmission to slow the vehicle. The system will automatically command downshifts to reduce vehicle speed, until the brake pedal is no longer being pressed. While in the Electronic Range Select ERS mode, grade braking is deactivated, allowing the driver to select a range and limiting the highest gear available.
I never ask my customers if they have checked their transmission fluid, they lack the experience to understand what they are looking at with respect to the temperature to level relationship.
General Motors and most other manufactures advise to have the level checked by a professional. It is not necessary to check the transmission fluid level. A transmission fluid leak is the only reason for fluid loss. You need to check the level while your truck is running and in park. Then add the correct type of automatic transmission fluid to the proper level and you should be back on the road!
If your fluid level is good and the fluid is red and bright then your problem probably runs deeper in your transmission and your only option would be to take it to a transmission specialist.
Hi there, I recently change my transmission fluid and filter 3days ago. Any idea what is the issue and how van I fix it. My car is corolla automatic trans. Thanks and regards. We have previously posted an article that relates to your situation. I have a chevy cavalier with an automatic transmission.
When I pull off at a stop light the transmission starts sticking then the rpm goes high. Then it stalls the car. I start the car back up and then it works fine. It does this randomly. Please help. The best place to start would be to change your transmission fluid and filter and then double check to make sure the fluid level is correct. If you are still experiencing the hard shift and stalling after changing the fluid and filter then you may want to have your Chevy looked at by a transmission specialist.
Hey hope all is well. I have a Chevy Silverado 5. Now when I was coming from work yesterday the transmission starting acting up whenerver I get to 40 or 50 mile per hour it start rev up so I pull on the side on the road check the fluid and it was empty. I put a quart of fluid in the truck got up this morning and checked it still full of fluid and still doing the same thing. Please help me out. Thanks for your question about your Chevy Silverado.
If your transmission is full of clean fluid and is still slipping at 40 or 50 mpg, then it is most likely that you have some sort of internal damage in your transmission, possibly from running low on fluid. Thanks for your question about your Grand Prix. Unfortunately with automatic transmissions, all you can do is check the transmission fluid color and level. If the fluid is clean and bright and at the proper level you most likely have a bigger issue with your transmission and will need a GM dealer or a transmission specialist take a look at it.
My Transmission Will Not Shift! Synthetic Power Steering Fluid. Windshield Washer Concentrate. Strange Noises The noisiest part of your transmission is actually the fluid pump. Old Transmission Fluid Another thing that may cause a hard shifting automatic transmission is old, incorrect, or worn out transmission fluid. Low Fluid Levels Lastly, a low transmission fluid level might be the cause of your hard shifting automatic transmission.
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