A vehicle comes in with the customer complaint of poor fuel economy. You test drive the vehicle and determine that the lock up torque converter is not functioning. Tech A states that the torque converter clutch solenoid could be the cause. Tech B states that the clutch pressure control solenoids can affect the lock up torque converter operation. Who is correct?

Question

Quizplus · Accepted Answer

Both Tech A and Tech B are correct. The torque converter clutch solenoid can directly affect the lock-up function, and the clutch pressure control solenoids can also influence the operation by affecting hydraulic pressure.

A Vehicle Comes in with the Customer Complaint of Poor