Wastegate hose replacement

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Wastegate hose replacement

How much does a wastegate hose replacement cost

Many modern-day vehicles rely on small capacity, forced induction engines to provide additional power and fuel economy without increased emissions, and one critical component of this system is the wastegate. The exhaust gasses from the engine are used to drive the turbocharger, and once the preset boost pressure is reached, the wastegate opens and controls the amount of airflow going through the turbocharger. This keeps the turbocharger from ‘overboosting’, which can cause catastrophic component failure when it occurs.

The wastegate hose utilises vacuum from the inlet manifold to accurately control when the wastegate opens, and a failure of this hose can cause a low or no boost pressure scenario, reducing engine power. When this happens, a replacement wastegate hose and a check of other components is the only way to restore your vehicle back to peak performance. Depending on your engine setup and ease of accessibility, the turbocharger may need to be removed to allow for wastegate hose replacement, and as such, repair costs can vary from $150 to $500 and up.

What is a wastegate hose?

The wastegate hose is usually made of silicone or rubber and connects with small hose clamps at either end. Although flexible when new, the high temperatures in the engine bay as well as contamination from oil and other fluids can cause the hose to harden and split over time. When this happens, replacement is the only option to rectify any issues caused by a split or broken hose.

Symptoms of a failed wastegate hose

  • Reduced engine power or vehicle in ‘Limp’ mode
  • Hissing noise from engine when accelerating
  • Check engine light is on
Wastegate hose replacement

How is a wastegate hose replacement performed?

  • The vehicle is raised on the hoist or on stands
  • The bonnet is opened and the engine cover removed
  • If necessary, the turbocharger will be removed from the engine
  • The split or broken wastegate hose will be disconnected and removed from the vehicle
  • The new wastegate hose will be fitted, including new clamps
  • If removed, the turbocharger will be reinstalled with new gaskets
  • The oil and coolant will be topped up if needed
  • The vehicle will be started and test-driven to ensure correct operation

Tips to remember

  • A hissing noise under acceleration may be caused by other factors, not just a failed wastegate hose. A split or failed intercooler hose may also give these symptoms
  • A failed wastegate hose can affect the fuel economy of your vehicle, often increasing the amount of fuel used

How important is replacing a failed wastegate hose?

Apart from increased fuel consumption and reduced performance, a failed wastegate hose can also leave your vehicle stranded, putting you and your family in danger. As soon as a problem is noticed, have a highly trained mechanic on AutoGuru diagnose and repair your vehicle to ensure it is safe to operate at all times.