VGT Actuator Failure Mechanical or Electrical? Cummins 6.7L Diagnosis

Is your truck showing signs of low boost, lag, sticking turbo vanes, or throwing actuator failure codes? Rob from HHP's Technical Sales is here to discuss a viewer's question on a failing Cummins 6.7L turbo actuator.

 

Learn to recognize these symptoms and take action before you're faced with a larger problem while on the job.

Click Here To Shop VGT Turbochargers

How to Tell if Your VGT Actuator Problems are Mechanical or Electrical

Electrical VGT Actuator Problems

Hook the actuator up to the computer with it disconnected from the turbocharger and you can test it. Here are some symptoms of electrical faults:

  • Fault Codes

  • Sector Gear Moves Easily

  • Noise Coming from Turbocharger

  • Low Boost

  • Over Boost

Mechanical VGT Turbo Problems

Make sure the sector gear moves freely on your turbocharger. If it doesn't move, you definitely need a turbo and possibly an actuator. Here are some symptoms that you have a mechanical issue:

  • Bent Turbo Fins

  • Stuck Vanes

  • Carbon Buildup

  • Failed Thrust or Ball Bearings

  • EGR Valve Problems

  • EGR Cooler Problems

  • Coolant Contamination

  • Contaminated/Rusty Actuator (Susceptible to Water)

Click To Talk Directly To A Diesel Engine Expert 8-5 EST

Diesel Engine Part Options For Your VGT Turbocharger

Diesel-Cummins-6.7L-VGT-Turbocharger-With-Actuator-Remanufactured

Why Buy From HHP?

  • At HHP, we don’t sell inferior VGT actuators from discount suppliers. We only sell you the best quality actuators for your needs, at fair, affordable prices. We are so confident in what we sell, that we offer an industry-leading warranty of 12 months.

  • Our ASE Certified Techs can diagnose your engine problem, offer you a fast and accurate estimate, and provide expert repair and installation advice, so you can make a confident purchasing decision. That’s why we’re America’s trusted diesel engine parts supplier.

  • We know that you need to get parts fast to service your customers. That's why we at HHP make sure that we have readily available lubrication system parts for your specific diesel engine and can typically ship your parts the same day.

Get A Quote Online!

VGT Turbocharger Resources

Related Articles:

HOW DOES A VARIABLE GEOMETRY TURBOCHARGER WORK IN DIESEL ENGINES?

VARIABLE GEOMETRY TURBOCHARGERS FOR YOUR DIESEL ENGINE ARE HERE!

WHY DIESEL ENGINE OIL CHANGES ARE KEY FOR YOUR VGT TURBO

HHP SPOTLIGHT: DIESEL ENGINE VGT TURBOCHARGER ADVANTAGES

Related Videos:

Give Us A Call!

 

Short on Time? Take your Quote Online!

We get it- when you need Diesel Engine Parts, time is of the essence. That's why we've developed the HHP Online Quoting System.

Just fill out the form with your name, engine information, and the parts you need, and our ASE-Certified Technicians will get back to you with an estimate. It's as close to magic as a diesel engine gets!

Get A Quote Online!