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1991 Mercedes-Benz L1117

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By Research the Car 2 min read

Vehicle Introduction:

The 1991 Mercedes-Benz L1117, a medium-duty truck model, is renowned for its robust construction and powerful engine. It’s offered with multiple engine and transmission options, each delivering impressive performance and durability. Its spacious interior and comfortable ride make it a favorite among commercial vehicle enthusiasts.

Engine

  • OM352 5.6L I6 Diesel
    • Engine Seizes: Occurs due to lack of lubrication or failed oil pump. Symptoms include sudden loss of power, grinding noises, and smoke from the engine. Requires engine rebuild or replacement. $5,000 - $10,000+
    • EGR Valve Sticking: Causes reduced engine performance and increased emissions. Requires cleaning or replacement of the EGR valve. $200 - $500
    • Injectors Leaking or Failing: Results in rough idling, decreased fuel efficiency, and poor engine response. Requires replacement of injectors. $1,000 - $2,500
  • OM422 7.2L V8 Diesel
    • Head Gasket Failure: Symptoms include coolant leaks, overheating, and white smoke from exhaust. Requires replacement of the head gasket. $1,500 - $3,000
    • Injector Pump Failure: Causes hard starting, loss of power, and black smoke from exhaust. Requires replacement of the injector pump. $2,000 - $5,000

Transmission

  • G70 6-Speed Manual
    • Synchro Ring Wear: Causes difficulty shifting gears, especially when downshifting. Requires replacement of worn synchro rings. $500 - $1,000
  • G85 8-Speed Manual
    • Input Shaft Bearing Failure: Leads to grinding noises, difficulty shifting gears, and eventual transmission failure. Requires replacement of the input shaft bearing. $1,200 - $2,000

Suspension

  • Rear Leaf Springs Breaking: Causes sagging in the rear end of the truck. Requires replacement of the broken leaf springs. $500 - $1,000
  • Front Shock Absorbers Worn: Results in poor handling and increased vibrations. Requires replacement of shock absorbers. $200 - $400 per shock

Electrical

  • Alternator Failure: Causes battery drain and electrical system problems. Requires replacement of the alternator. $500 - $1,000
  • Wiring Harness Issues: Can lead to intermittent electrical problems, such as flickering lights or power loss. Requires inspection and repair or replacement of affected wiring. $200 - $1,000+

Interior

  • Cruise Control Switch Failure: Causes the cruise control system to malfunction or become inoperable. Requires replacement of the cruise control switch. $150 - $250
  • HVAC System Malfunction: Can result in poor heating or cooling performance. Requires diagnosis and repair of the HVAC system. $200 - $1,000+

Exterior

  • Rubber Seals Degraded: Over time, the rubber seals around the windows, doors, and other openings can degrade, leading to water leaks or drafts. Requires replacement of seals. $100 - $300+

Summary

The 1991 Mercedes-Benz L1117 is a generally reliable vehicle with solid performance and durability. However, like most vehicles, it has some common issues that can affect the ownership experience. These issues range in severity and cost, so it’s crucial to be aware of them before purchasing or owning one. Regular maintenance and timely repairs can help mitigate these issues and extend the vehicle’s lifespan.

Mercedes-Benz, L1117
Mercedes-Benz L1117 1991
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