Poor Acceleration; Flares When Starting Off In D, S, and R

Poor acceleration; flares when starting off in D, S, and R

A/T clutch pressure control solenoid valve D defective

Output shaft (countershaft) speed sensor defective

Torque converter one-way clutch defective

Low ATF level

ATF pump worn or binding

Main regulator valve stuck or spring worn

ATF strainer clogged

Stator shaft worn or damaged

Notes

Inspect A/T clutch pressure control solenoid valve D with the HDS A/T Clutch Pressure Control Solenoid Valve A, B, C, and D Test.

Notes

Check the output shaft (countershaft) speed sensor installation.

Notes

Inspect the output shaft (countershaft) speed sensor O-ring for wear and damage.

Notes

Check the stall speed A/T Stall Speed Test.

Notes

Replace the torque converter.

Notes

Check the ATF level, and check the ATF cooler lines for leaks and loose connections. If necessary, clean the ATF cooler lines.

Notes

Check the line pressure A/T Pressure Test.

Notes

Improper alignment of ATF pump and the torque converter housing may cause ATF pump seizure. The symptoms are mostly an rpm-related ticking noise or a high pitched squeak.

Notes

Check the main regulator valve in the regulator valve body for free movement. If the valve does not move, replace the regulator valve body.

Notes

Check the ATF strainer for debris. If the strainer is clogged, find the damaged components that caused the debris. If no cause for contamination is found, replace the torque converter.

Notes

Check the stator shaft splines for wear and damage.