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 MANAGEMENTEMISSION CONTROL SYSTEMSAPPLICATION AND ID
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)
Emission Control Systems: Application and ID
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)SECTION Application and ID
325e PCV, EEC, CAT, OS, DME, FR
325i PCV, EEC, CAT, OS, DME, FR
325iX PCV, EEC, CAT, OS, DME, FR
524td (Diesel) PCV, EGR, VP-20
528e PCV, EEC, CAT, OS, DME, FR
535i PCV, EEC, CAT, OS, DME, FR
635i PCV, EEC, CAT, OS, DME, FR
735i PCV, EEC, CAT, OS, DME, FR
M3 PCV, EEC, CAT, OS, DME, FR
M5 PCV, EEC, CAT, OS, DME, FR
M6 PCV, EEC, CAT, OS, DME, FR
CAT - Catalytic Converter
DME - Digital Motor Electronics (Motronic)
EEC - Evaporative Emissions Control
EGR - Exhaust Gas Recirculation
FR - Fillpipe Restrictor
OS - Oxygen Sensor
PCV - Positive Crankcase Ventilation
VP-20 - Bosch Diesel Injection System
RENDER: 1.0x
NO RELATED
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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.