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Troubleshooting

This section provides basic symptoms of problems that may affect your car. We hope that this section will have owners identify in general what kind of problems they are facing, but we still recommend that the vehicle be brought to an authorized dealership for a through inspection.

Remember to checkout our BIMMERCARE section for more information and get the RIGHT PARTS in our Parts Store.

ENGINE

 

Engine does not rotate at start

 

  • Battery is not well connected or corroded or faulty.

  • The starting circuit be disconnected or loose.

  • Starter motor failed.

  • Engine ground strap is disconnected or broken.

 

 

Engine hard to start when cold

 

  • Battery is not well connected or corroded or faulty.

  • Air filter could be dirty or clogged.

  • Spark plug failed.

  • Fuel injection or Ignition system failure.

 

 

Engine stalls

 

  • Fuel filter plugged.

  • Fuel tank vent and pipes may be blocked or restricted.

  • Spark plug failed.

  • Fuel injection failure.

 

 

Engine does not idle properly

 

  • Vacuum leak at throttle body, intake manifold or hoses.

  • Air filter could be dirty or clogged.

  • Spark plug failed.

  • Timing chain/belt not well tensioned.

 

 

COOLING SYSTEM

 

Overheating

 

  • Coolant level is low. See Capacities

  • Thermostat needs to be replaced.

  • Expansion tank pressure cap failed.

  • Temperature gauge inaccurate.

 

 

Overcooling

 

  • Thermostat needs to be replaced.

  • Viscous coupling faulty.

  • Temperature gauge inaccurate.

 

 

Coolant leak

 

  • Damaged hose and/or clips.

  • Faulty pressure cap.

  • Core plug leaking.

  • Radiator core leak.

 

 

FUEL & EXHAUST SYSTEMS

 

Fuel consumption high

 

  • Tire under inflated.

  • Air filter is dirty.

  • Ignition system faulty.

  • Fuel injection system faulty.

 

 

Excessive noise or fumes

 

  • Leaking exhaust system or faulty joints.

  • Muffler or pipe needs to be replaced.

 

 

 

STEERING & SUSPENSION

 

Tire wear is uneven and excessive

 

 

Wheel wobbles and vibration is present

 

  • Tires are out of balance.

  • Wheel might be damaged.

  • Wheel bolts loose (CHECK IMMEDIATELY).

 

 

 

Instability

 

  • Wheel alignment incorrect.

  • Tire damaged.

  • Shock absorbers need to be replaced.

  • Wheel bolts loose (CHECK IMMEDIATELY).

 

 

Power steering problem

 

  • Check power steering fluid. See Capacities

  • Power steering fluid hoses maybe clogged.

  • Power steering pump to be replaced.

 

 

  

*Disclaimer: The articles presented/submitted on Bimmerzone.com are for the sole purpose of learning and basic information. In no way that information provided on Bimmerzone.com be considered professional advice and Bimmerzone.com will not be held responsible for any consequences resulting directly or indirectly from reading these articles. In our articles we mention about brand names and stores, these are for education, comparison and information purposes only.  We do not specifically endorse any companies.
 

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Page last updated 04/25/2008

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