Segment:
Compact Executive Sedan (E-Segment)
Target Audience:
Owners seeking to perform their own maintenance and repairs, save money, and gain deeper understanding of their vehicle.
Competitors 1980S:
BMW 3 Series (E30), Audi 80/90, Volvo 240, Alfa Romeo 75.
Unique Selling Proposition:
Mercedes-Benz build quality, engineering, safety, and comfort at a more accessible price point than larger Mercedes models.
Manual Benefit:
Empowers owners to perform repairs easily with step-by-step instructions, pictures, and wiring diagrams.
Cost Savings:
Significant potential savings on repair and maintenance costs.
Engine:
Detailed coverage of engine systems, including disassembly, assembly, diagnostics, and repair for all applicable engine variants.
Transmission:
Coverage for both manual and automatic transmission systems, including removal, installation, repair, and fluid specifications.
Fuel System:
In-depth information on fuel injection systems (Bosch KE-Jetronic, etc.), fuel pumps, injectors, and related components.
Electrical System:
Comprehensive wiring diagrams, electrical component testing, troubleshooting, and repair procedures for all vehicle electrical systems.
Braking System:
Detailed procedures for brake system maintenance, repair, including ABS (if equipped), components like calipers, rotors, lines, and fluid.
Suspension Steering:
Coverage of front and rear suspension components, steering gear, power steering, and alignment specifications.
Body Chassis:
Body repair, panel replacement, interior trim removal/installation, and chassis component repair.
HVAC:
Information on climate control systems, including diagnosis and repair of heating, ventilation, and air conditioning components.
Exhaust System:
Details on exhaust manifold, catalytic converter, mufflers, and pipe replacement and repair.
Routine Maintenance:
Covers all routine maintenance tasks, including oil changes, filter replacements, fluid checks, and lubrication.
Troubleshooting:
Extensive troubleshooting guides and diagnostic flowcharts for common and uncommon issues.
Engine Repair:
Detailed step-by-step procedures for engine rebuilds, component replacement (pistons, rings, bearings, valves, etc.).
Transmission Repair:
Procedures for clutch replacement, automatic transmission overhaul, and torque converter service.
Brake Repair:
Instructions for brake pad/shoe replacement, rotor/drum servicing, brake line repairs, and bleeding procedures.
Electrical Diagnostics:
Guidance on using multimeters, oscilloscopes, and diagnostic tools to troubleshoot electrical faults.
Bodywork:
Procedures for body panel alignment, rust repair, welding, and painting preparation.
Interior Repair:
Guidance on removing and installing seats, dashboard components, door panels, and headliners.
Cooling System:
Radiator, water pump, thermostat, and hose replacement and service.
Depth:
Extensive, professional-grade detail suitable for both DIY enthusiasts and professional technicians. Covers everything from basic maintenance to complete component overhauls.
Visuals:
Includes step-by-step instructions with accompanying pictures and detailed wiring diagrams for clarity.
Engine Family 1:
M102 (Inline-4)
Engine Variant 1:
190E 2.3 (1983-1985): 2.3L M102.980/982 (CIS-E Fuel Injection)
Engine Variant 2:
190E 2.6 (1986-1989): 2.6L M103.942 (CIS-Lambda Fuel Injection)
Engine Variant 3:
190D 2.2 (1983-1985): 2.2L OM601.911 (Diesel)
Engine Variant 4:
190D 2.5 (1985-1989): 2.5L OM602.911 (Diesel)
Engine Variant 5:
190E 2.3-16 (1983-1988): 2.3L M102.990 (Cosworth DOHC, Kugelfischer Mechanical Fuel Injection)
Horsepower:
Approx. 115-130 hp (depending on market and injection system)
Torque:
Approx. 130-140 lb-ft
Horsepower:
Approx. 160 hp
Torque:
Approx. 170 lb-ft
Horsepower:
Approx. 185 hp
Torque:
Approx. 170 lb-ft
Injection Systems:
Bosch K-Jetronic (CIS), Bosch KE-Jetronic (CIS-E), Bosch KE-Jetronic with Lambda, Kugelfischer Mechanical (for 2.3-16).
Engine Control Units:
Various Bosch ECUs depending on model and year, some with primitive diagnostic capabilities.
Type 190E 2.3:
4-speed manual (early), 5-speed manual (later)
Type 190E 2.6:
5-speed manual
Type 190D:
4-speed manual or 5-speed manual
Type 190E 2.3:
4-speed automatic (722.4)
Type 190E 2.6:
4-speed automatic (722.4)
Type 190D:
4-speed automatic (722.3)
Transmission Fluid Spec Auto:
MB Spec 236.6 (e.g., Dexron II)
Transmission Fluid Spec Manual:
API GL-4 (e.g., SAE 75W-90 or 80W-90)
Oil Change Interval:
Typically every 10,000 - 15,000 km (6,000 - 9,000 miles) or 12 months, whichever comes first.
Major Service Interval:
At specified mileages for spark plug replacement, fuel filter, air filter, and other component checks/replacements.
Engine Oil Spec:
API SG or SH, SAE 10W-40 or 5W-30 (depending on climate and oil availability). Refer to manual for exact MB approval codes.
Coolant Spec:
Ethylene glycol-based antifreeze/coolant, typically a 50/50 mix with distilled water. MB Spec 325.0.
Brake Fluid Spec:
DOT 3 or DOT 4 brake fluid.
Common Problems 1:
Vacuum line deterioration leading to vacuum leaks and rough idle. Wiring harness insulation breakdown (especially around engine).
Common Problems 2:
K-Jetronic fuel system issues (e.g., distributor, warm-up regulator, airflow meter). Diesel injector pump leaks (OM602).
Common Problems 3:
Rattles or noises from suspension components (e.g., control arm bushings, ball joints). Differential seal leaks.
Common Problems 4:
Water ingress in the cabin, especially around the windshield and sunroof (if equipped). Corroded battery terminals and grounding points.
Parts Notes:
Many common wear items are still readily available through Mercedes-Benz Classic or specialized suppliers. Some unique parts for performance models (e.g., 2.3-16) can be scarce and expensive.
Brand Philosophy:
Known for engineering excellence, durability, safety, and refined comfort. The 190 was Mercedes-Benz's first foray into the compact executive segment.
Introduction:
Introduced in 1982 (model year 1983) as the 'Baby Benz,' designed to be more affordable and accessible than the larger S-Class and E-Class models.
Key Milestones:
Introduction of the 190E 2.3-16 in 1983, the 190D diesel variants, and the 190E 2.6 in 1986. The 190E 2.5-16 Evolution I and II arrived later (beyond the scope of this manual).
Production Locations:
Mainly Bremen, Germany.
Production Volume:
Over 1.8 million units produced across its lifespan (including models beyond 1988).
