Range Rover Turbo Replacement Without Lifting The Body. Land Rover turbo reconditioning and fitting service 2 years warranty west midlands Birmingham

Overspeeding

Overspeeding is a term used when a turbo is operating well above its normal operating limits.
If there are any leaks, cracks or poor seals between the compressor and the engine, the turbo will have to work
much harder than it should deliver the required air levels to the engine.

Causes of overspeeding

• Engine modifications including ‘chipping’ or ‘over-fuelling’
• The inconsistent flow of air into the turbo
  – Tear in the air hose or the hose becoming completely detached
  – Restrictions in the air intake filter or pipework
  – Air leaks between compressor and engine
• The wastegate or VNT mechanism has been set incorrectly
• Worn injectors
• Installing an incorrect turbo
• Loss of signal to the SREA (Simple Rotary Electronic Actuator) for the wastegate or VNT control
• High altitude
• Incorrect movement or restrictions in the VNT mechanism

Signs of overspeeding

• The ‘orange peel’ effect
• Inducer blade damage can be a consequence of housing rub
• Staining due to oxidation
• Partial loss of blades
• Burst wheel
• Fatigue fractures of blades

Common fault codes:

• P0047 – turbo boost control, circuit low,
• P0046 – boost control valve/solenoid circuit range performance,
• P2263 – turbocharger boost system performance,
• P0238 – turbocharger boost sensor A circuit high,
• P259E – turbocharger A boost control position at the low limit,
• P0048 – turbocharger/supercharger boost control circuit high,
• P2263 – turbocharger boost system performance.