Automatic Transmission Symptoms

Rok Trac

Front Wheel Drive Transmission



The Symptoms listed below are typical problems and are indicators only and are not intended to be a diagnoses. If you suspect you have any kind of problem with your trsnsmission have it inspected by a professional.Domestic vehicle service interval is normally between 15,000 to 20,000 miles. Commercial vehicles should be serviced more frequently, depending on the severity of use. The cost varies between $50.00 & $150.00 and depends on the year, make, model, quantity of fluid & required lubricant. Always check owners manual.

If these symptoms are present you may have a transmission problem:



Check Engine Light On

Requires electronic scan test to retrieve trouble codes

Most new cars have a system that monitors the performance of your car. If something is not working properly, the "Check Engine" light usually comes on. The good news is that this "pre-warning" system can help you avoid costly damage, which may be occurring with your vehicle, by detecting small problems before they become big problems. However, the only way to be certain is to have your car inspected by an expert mechanic when the "Check Engine" light comes on.

On Board Diagnostics (OBD)

The purpose of ‘OBD’ was to monitor the emission control system. When the system saw a fault three things were supposed to happen.

  1. Set a warning light to inform the driver that a problem existed.
  2. Set a code in the computer.
  3. Record the code in the computer’s memory so that it can be retrieved for diagnosis and repair.
  • The system worked well but had a lot of shortcomings.
  • In 1996 all cars sold in the U.S. were equipped with a new version of on board diagnostics and was known as OBD II.
  • The difference between OBD and OBD II was the standardization of the system. All warning lights now say ‘check engine’, typically with a picture of an engine with ‘check ’written across it. The code was standardized with over 400 possible codes that can be stored in the system. If the gas cap is left loose the ‘check engine’ light will be illuminated and a code will be set. This can create a problem for the motorist if the warning light is set because of a loose gas cap, it will not go out when the cap is replaced. A service facility will have to reset the light.
  • If any of these symptoms are present call Escondido Transmission today and schedule a scan test diagnostic. Remember most repairs are minor when serviced immediately

The purpose of ‘OBD’ was to monitor the emission control system. When the system saw a fault three things were supposed to happen.

  • Set a warning light to inform the driver that a problem existed.
  • Set a code in the computer.
  • Record the code in the computer’s memory so that it can be retrieved for diagnosis and repair.

 

  • The system worked well but had a lot of shortcomings.
  • In 1996 all cars sold in the U.S. were equipped with a new version of on board diagnostics and was known as OBD II.
  • The difference between OBD and OBD II was the standardization of the system. All warning lights now say ‘check engine’, typically with a picture of an engine with ‘check ’written across it. The code was standardized with over 400 possible codes that can be stored in the system. If the gas cap is left loose the ‘check engine’ light will be illuminated and a code will be set. This can create a problem for the motorist if the warning light is set because of a loose gas cap, it will not go out when the cap is replaced. A service facility will have to reset the light.
  • If any of these symptoms are present call Escondido transmission today and schedule a scan test diagnostic. Remember most repairs are minor when serviced immediately.

Fluids Leak Sources

  • Worn or damaged Pan gasket
  • Worn or damaged Pump seal
  • Worn or damaged tail shaft seal
  • Transmission case halves
  • Transmission sensors, lever seals, etc

If any of these symptoms are present call Escondido Transmission today and schedule a free external transmission diagnostic. Remember most transmission repairs are minor when serviced immediately.

Fluid Leak Impact

  • Reduces cooling and lubricating capabilities
  • Reduces operating pressures
  • Reduces power transfer
  • Causes slipping and shifting problems
  • Causes overheating and damage to internal transmission components

If any of these symptoms are present call Escondido Transmission today and schedule a free external transmission diagnostic. Remember most transmission repairs are minor when serviced immediately.

NO ENGAGEMENT

  • Low or no fluid
  • Worn or damaged torque converter splines
  • Worn or damaged Pump
  • Worn damaged clutch pack assemblies
  • Worn or damaged neutral safety switch

If any of these symptoms are present call Escondido Transmission today and schedule a free external transmission diagnostic. Remember most transmission repairs are minor when serviced immediately

Delayed Engagement

  • Low or no fluid
  • Worn or damaged internal seals causing a hydraulic leak
  • Worn or damaged electronic pressure solenoid
  • Worn or damaged clutch pack assemblies

If any of these symptoms are present call Escondido transmission today and schedule a free external transmission diagnostic. Remember most transmission repairs are minor when serviced immediately.

Slipping

  • Low or no fluid
  • Worn or damaged internal seals causing a hydraulic leak
  • Worn or damaged clutch pack assemblies
  • Worn or damaged electronic pressure solenoid
  • Throttle valve cable adjustment

If any of these symptoms are present call Escondido Transmission today and schedule a free external transmission diagnostic. Remember most transmission repairs are minor when serviced immediately.

Harsh Engagement

  • Throttle valve cable adjustment
  • Worn or damaged torque converter
  • Worn or damaged accumulator
  • Worn or damaged motor or transmission mounts
  • Manual lever position switch
  • Engine rpm set to high
  • Excessive gear lash
  • Worn or damaged u-joints

If any of these symptoms are present call Escondido transmission today and schedule a free external transmission diagnostic. Remember most transmission repairs are minor when serviced immediately.

Harsh Up / Down Shift

  • Throttle valve cable adjustment
  • Worn or damaged motor or transmission mounts
  • Manual lever position switch
  • Damaged or Broken accumulator
  • Engine rpm set to high
  • Excessive gear lash
  • Worn or damaged u-joints

If any of these symptoms are present call Escondido transmission today and schedule a free external transmission diagnostic. Remember most transmission repairs are minor when serviced immediately

Intermenttent Shifting Problem

  • Worn or damaged electrical sensor
  • Transmission control module
  • Worn or loose connectors
  • Bad ground

If any of these symptoms are present call Escondido Transmission today and schedule a free external transmission diagnostic. Remember most transmission repairs are minor when serviced immediately.

Whinning Noise

  • Worn or damaged torque converter
  • Worn or damaged pump
  • Worn or damaged bearing
  • Worn or damaged gear train

If any of these symptoms are present call Escondido Transmission today and schedule a free external transmission diagnostic. Remember most transmission repairs are minor when serviced immediately.

Grinding Noise

  • Worn or damaged bearing / bushing
  • Worn or damaged gear train

If any of these symptoms are present call Escondido transmission today and schedule a free external transmission diagnostic. Remember most transmission repairs are minor when serviced immediately.

Hunting

  • Valve body cross leak
  • Valve in valve body leaking by
  • Worn or damaged governor

If any of these symptoms are present call Escondido transmission today and schedule a free external transmission diagnostic. Remember most transmission repairs are minor when serviced immediately