Answer A is wrong. An out of balance torque converter will continue to make a vibration during a stall test.

Answer B is correct. The vehicles drive shaft will be held stationary during a stall test.

Answer C is wrong. A main crank bearing would make noise during acceleration.

Answer D is wrong. The Electronic Pressure Control (EPC) replaces the conventional non-electric throttle cable/modulator system to provide pressure changes in response to engine load. This would affect pressures but would not cause a vibration.

Return    Learn more about the torque converter stall test.

Answer A is wrong. The most likely answer is the transmission pump.

Answer B is correct. A bad transmission pump makes a whining noise that increases with engine speed while in park or neutral.

Answer C is wrong. A bad output shaft makes noise only when the transmission is in gear.

Answer D is wrong. The most likely cause is the transmission pump.

3.

Answer A is wrong. The pump will usually make a whining or whirling noise.

Answer B is correct. Hardened seals allow fluid past when cold but as the vehicle warms the seals begin to function again. This transmission will need an overhaul to fix this problem.

Answer C is wrong. Perform a stall test to check the torque converters performance. Always check to see if it is recommended by the vehicle manufacturer.

Answer D is wrong. Input shaft end play would not cause this condition.

Return    Learn more about automatic transmission seals.

Answer A is correct. The part should be cleaned in solvent and then dried with a lint free rag.

Answer B is wrong. A bent spool valve can not be repaired and must be replaced.

Answer C is wrong. Technician A is correct.

Answer D is wrong. Technician A is correct, always use a lint free rag on a valve body.

Answer A is wrong. Overheating transmission fluid reduces its effectiveness dramatically.

Answer B is wrong. Slipping bands and clutches overheat the fluid reducing causing it to turn brown.

Answer C is wrong. Oxidation turns the fluid a brown color.

Answer D is correct. The transmission fluid mixes with the coolant producing a milky color similar to a strawberry milkshake.