1988-1990 - E34 early
Early 520i used the M20B20 single-cam inline-six in many markets.
Araç veritabanı
BMW 5 Series
E34 / 1988-1996 / Executive sedan/touring
EuropeUnited KingdomMiddle Eastselected global marketsKapsam: expanded
Yıl ve jenerasyon haritası
1990-1992 - E34 M50 transition
520i moved to the M50B20 24-valve inline-six in many European-market cars.
1992-1996 - E34 VANOS update
520i received the M50B20TU with VANOS depending on production date and market.
Yıl ve kasa seçimi
Net motor, yağ ve servis bilgisi için yılı ve kasayı seçin.
Yıla göre motor kodları
| Yıl | Kasa/versiyon | Motor kodları | Motor hacmi | Yakıt sistemi |
|---|---|---|---|---|
| 1991 | 520i | M50B20 | 1991 cc | Bosch electronic fuel injection |
Motora göre yağ kapasitesi
| Yıl | Motor kodları | Yağ tipi | Yağ kapasitesi | Sıvı |
|---|---|---|---|---|
| 1991 | M50B20 | 5W-40, 5W-30 or 10W-40 depending on climate; use oil with suitable BMW approval for older petrol engines. | 5.75 L service fill with filter commonly listed for 1990-1991 E34 520i M50B20. | Gearbox-code-specific manual fluid or automatic ATF; do not choose fluid by model name alone. |
Motor kodları ve varyantlar
M20B20 - 2.0L SOHC inline-6
1988-1990 / 1991 cc / Gasoline / Naturally aspirated
- Yağ tipi
- 15W-40, 10W-40 or climate-appropriate classic BMW petrol oil; verify owner manual.
- Yağ kapasitesi
- Approximately 4.25-4.5 L with filter depending on specification.
- İlgili arıza kodları
- P0300, P0171, P0115
On M20 engines, timing belt history is more important than mileage claims.
Yaygın arıza desenleri
Timing belt service neglectVacuum leaksDistributor/ignition wearCooling system age
M50B20 - 2.0L DOHC 24-valve inline-6
1990-1992 / 1991 cc / Gasoline / Naturally aspirated
- Yağ tipi
- 5W-40, 5W-30 or 10W-40 depending on climate and oil approval.
- Yağ kapasitesi
- 5.75 L service fill with filter commonly listed for E34 520i M50B20.
- Buji aralığı
- Inspect around 30k-40k km; replace earlier for misfire or rough idle.
- İlgili arıza kodları
- P0300, P0301, P0171, P0115, P0130
1991 520i is commonly M50B20 in European-market cars, but production month and market should be checked.
Yaygın arıza desenleri
Vacuum leaksValve cover oil leaksIgnition coil/boot faultsCooling system plastic aging
M50B20TU - 2.0L DOHC VANOS inline-6
1992-1996 / 1991 cc / Gasoline / Naturally aspirated
- Yağ tipi
- 5W-40, 5W-30 or 10W-40 depending on climate and oil approval.
- Yağ kapasitesi
- 5.75 L service fill with filter commonly listed for E34 520i M50-family engines.
- İlgili arıza kodları
- P0300, P0171, P0505
TU engines add VANOS; idle and low-rpm torque complaints should include VANOS and vacuum checks.
Yaygın arıza desenleri
VANOS seal wear symptomsVacuum leaksRough idleCooling system age
Şanzıman varyantları
Getrag/ZF 5-speed manual family - 5-speed manual
1988-1996 / Manual
- Sıvı
- Use gearbox-code-specific manual transmission fluid; verify label/tag before service.
- Servis notu
- On older BMWs, service by actual gearbox tag rather than model name alone.
- İlgili arıza kodları
Yaygın arıza desenleri
Shifter bushing wearClutch hydraulic leaksGear oil age
ZF 4HP22 / 5HP18 family by engine and year - Automatic transmission
1988-1996 / Torque-converter automatic
- Sıvı
- ATF specification depends on transmission tag and market.
- Servis notu
- Confirm exact automatic gearbox before selecting fluid.
- İlgili arıza kodları
- P0700, P0715
Yaygın arıza desenleri
Delayed engagement when neglectedValve body wearFluid leak from old seals
Teknik özellikler
- Motorlar: M20B20 2.0L I6, M50B20 2.0L 24V I6, M50B20TU 2.0L VANOS I6, M50B25 2.5L I6, M30/M60/S38 variants by model
- Şanzımanlar: 5-speed manual, 4-speed automatic, 5-speed automatic on selected later models
- Lastik ölçüleri: 195/65R15, 205/65R15, 225/60R15, 225/55R16
- Bijon aralığı: 5x120
- Bijon torku: 120 Nm typical for BMW 5 Series E34 wheel bolts; verify wheel type.
- Akü: Large European DIN battery; capacity varies by engine and equipment.
Sıvılar ve servis verileri
- Motor yağı: Depends on engine and climate. 1991 520i M50B20 commonly uses 5W-40, 5W-30 or 10W-40 oil meeting suitable BMW approval for older petrol engines.
- Şanzıman yağı: Manual or automatic fluid depends on gearbox code; verify ZF/Getrag transmission tag before service.
- Soğutma sıvısı: BMW-compatible phosphate/nitrite-free coolant mixed with demineralized water.
- Fren hidroliği: DOT 4 brake fluid.
Bakım programı odağı
Engine oil and filter
Every 10k-12k km or annually for conservative use
Older M50 engines benefit from conservative oil intervals and correct filter quality.
İlgili: P0011, P0300
Cooling system
Inspect every service; refresh aging plastic/rubber parts proactively
Overheating can damage inline-six engines quickly.
İlgili: P0115, P0128
Ignition and vacuum inspection
Inspect when idle, misfire or fuel-trim symptoms appear
Vacuum leaks and old ignition parts are common causes of poor running.
İlgili: P0300, P0171
Bilinen sorunlar
Cooling system aging
highEtkilenen yıllar: 1988-1996 E34
Belirtiler
Coolant smellTemperature riseHeater output changes
İlk kontroller
Radiator necksWater pumpThermostatExpansion tank capHoses
İlgili: P0115, P0128
M50 rough idle and lean running
moderateEtkilenen yıllar: 1990-1996 M50-family 520i/525i
Belirtiler
Rough idleHesitationLean mixture symptoms
İlk kontroller
Intake bootsVacuum hosesICVMAF dataIgnition coils
İlgili: P0171, P0300, P0505