1990 Mercedes-Benz L1117

Introduction:

The 1990 Mercedes-Benz L1117 is a mid-size luxury sedan that was powered by a 3.0L inline-6 engine mated to a 4-speed automatic transmission. It was known for its comfort, build quality, and performance.

Engine: M103 3.0L Inline-6 (188 hp, 192 lb-ft of torque)

Oil Leaks from Valve Cover Gasket: Description/Symptoms: Oil spots underneath the vehicle, visible oil residue on the top of the valve cover. Solution: Replace the valve cover gasket. Estimated Cost to Fix: $200 - $400+ Recalls: None Found

Intake Manifold Gasket Failure: Description/Symptoms: Coolant leaks, engine overheating, rough idling. Solution: Replace the intake manifold gasket. Estimated Cost to Fix: $500 - $800+ Recalls: None Found

Transmission: 4-Speed Automatic (722.3)

Transmission Fluid Leaks from Pan Gasket: Description/Symptoms: Transmission fluid spots underneath the vehicle, delayed gear engagement. Solution: Replace the transmission pan gasket. Estimated Cost to Fix: $200 - $300+ Recalls: None Found

Electrical:

Headlight Switch Failure: Description/Symptoms: Headlights not working, intermittent headlight operation. Solution: Replace the headlight switch. Estimated Cost to Fix: $100 - $200+ Recalls: None Found

Ignition Coil Failure: Description/Symptoms: Difficulty starting, engine misfires, poor fuel economy. Solution: Replace the ignition coil. Estimated Cost to Fix: $100 - $200+ per coil Recalls: None Found

Exterior:

Rear Window Regulator Failure: Description/Symptoms: Rear window not opening or closing properly, rattling noise. Solution: Replace the rear window regulator. Estimated Cost to Fix: $300 - $500+ Recalls: None Found

Interior:

Climate Control Unit Failure: Description/Symptoms: HVAC system not functioning correctly, inconsistent temperature control. Solution: Replace the climate control unit. Estimated Cost to Fix: $500 - $800+ Recalls: None Found

Power Window Switch Failure: Description/Symptoms: Power windows not working properly, intermittent operation. Solution: Replace the power window switch. Estimated Cost to Fix: $100 - $200+ per switch Recalls: None Found

Suspension:

Strut Mount Bearing Failure: Description/Symptoms: Clunking noise from the suspension, uneven tire wear. Solution: Replace the strut mount bearing. Estimated Cost to Fix: $200 - $400+ per strut Recalls: None Found

Summary:

The 1990 Mercedes-Benz L1117 is a reliable and comfortable sedan, but it does have some common issues that can be expensive to repair. The most severe and costly issue is the intake manifold gasket failure, which can lead to engine damage if not addressed promptly. Other frequent issues include oil leaks from the valve cover gasket, transmission fluid leaks from the pan gasket, and electrical problems such as headlight switch failure and ignition coil failure. Overall, these issues can be a nuisance and may require regular maintenance to keep the vehicle in good condition.