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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSBMW1987L7 (E23) L6-3430CC 3.4L SOHC (M30)REPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSIDLE/THROTTLE SPEED CONTROL UNITDESCRIPTION AND OPERATION
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)
Idle/Throttle Speed Control Unit: Description and Operation
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)SECTION Description and Operation
Fig. 18 Idle Control Valve:
An electrically operated idle rpm control valve keeps the idle speed stable under various operating conditions. Measured intake air from the airflow meter bypasses the throttle plate through a variable orifice in the idle control valve.
The Motronic ECU controls the orifice opening according to the engine speed and operating conditions as specified by various sensors and switches on the engine and transmission.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.