Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBMW1987L7 (E23) L6-3430CC 3.4L SOHC (M30)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTRANSMISSION CONTROL SYSTEMSDESCRIPTION AND OPERATIONFUNCTIONAL DESCRIPTIONTORQUE CONVERTER LOCKUP CLUTCH CONTROL
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)
Torque Converter Lockup Clutch Control
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)SECTION Torque Converter Lockup Clutch Control
Torque Converter Control
The converter lockup clutch is activated dependent upon the accelerator pedal position, transmission output speed, drive program, as well as the engaged gear (only in 3rd and 4th gear). The torque converter clutch opens when coasting.
The converter lockup clutch is activated dependent upon the accelerator pedal position, transmission output speed, drive program, as well as the engaged gear (only in 3rd and 4th gear). The torque converter clutch opens when coasting.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.