1991 BMW 735iL

1991 BMW 735iL

The 1991 BMW 735iL is a luxury sedan that was offered with a 3.5-liter inline-6 engine and a 4-speed automatic transmission. It produced 208 horsepower and 225 lb-ft of torque. The 735iL was praised for its comfortable ride, powerful engine, and spacious interior. However, it was also criticized for its high price and complex electronics.

Engine

3.5L M30 I6

• Head Gasket Failure
  • Description/Symptoms: Coolant leaks, overheating, white smoke from exhaust
  • Solution: Replace head gasket
  • Estimated Cost to Fix: $1,500 - $2,500+
  • Recalls: None Found
• Timing Chain Tensioner Failure
  • Description/Symptoms: Rattling noise from engine at startup, loss of power
  • Solution: Replace timing chain tensioner
  • Estimated Cost to Fix: $500 - $1,000
  • Recalls: None Found
• Intake Manifold Gasket Leak
  • Description/Symptoms: Vacuum leak, rough idle, loss of power
  • Solution: Replace intake manifold gasket
  • Estimated Cost to Fix: $300 - $500
  • Recalls: None Found

Transmission

4-Speed Automatic (ZF 4HP22)

• Transmission Slipping
  • Description/Symptoms: Difficulty shifting gears, loss of power
  • Solution: Replace transmission or rebuild
  • Estimated Cost to Fix: $2,000 - $4,000+
  • Recalls: None Found

Suspension

• Strut Mount Failure
  • Description/Symptoms: Clunking or rattling noise from front suspension, poor handling
  • Solution: Replace strut mount
  • Estimated Cost to Fix: $200 - $400
  • Recalls: None Found
• Control Arm Bushing Failure
  • Description/Symptoms: Vibration, poor handling, uneven tire wear
  • Solution: Replace control arm bushings
  • Estimated Cost to Fix: $300 - $600
  • Recalls: None Found

Electrical

• Alternator Failure
  • Description/Symptoms: Dimming lights, difficulty starting engine, battery warning light
  • Solution: Replace alternator
  • Estimated Cost to Fix: $500 - $1,000
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: Battery drains quickly, difficulty starting engine
  • Solution: Find and fix source of battery drain, replace battery if necessary
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found

Exterior

• Rust
  • Description/Symptoms: Rust spots on body panels, especially around wheel wells and undercarriage
  • Solution: Remove rust and apply rust inhibitor, replace panels if necessary
  • Estimated Cost to Fix: $500 - $2,000+
  • Recalls: None Found
• Tail Light Failure
  • Description/Symptoms: One or more tail lights not working
  • Solution: Replace tail light assembly
  • Estimated Cost to Fix: $100 - $200
  • Recalls: None Found

Interior

• Climate Control System Failure
  • Description/Symptoms: AC or heater not working, erratic temperature control
  • Solution: Repair or replace climate control system components
  • Estimated Cost to Fix: $500 - $1,500+
  • Recalls: None Found
• Power Window Failure
  • Description/Symptoms: One or more power windows not working
  • Solution: Replace power window motor or switch
  • Estimated Cost to Fix: $200 - $500 per window
  • Recalls: None Found

Summary

The 1991 BMW 735iL is a reliable and luxurious sedan, but it does have some potential issues that should be considered. The most common issues are head gasket failure, transmission slippage, and rust. The cost of these repairs can be significant, so it is important to factor in maintenance costs when purchasing a used 735iL.