Q: My turbo will sometimes work and sometimes will not work.

asked by on

My turbo will sometimes work and sometimes will not work. I had got a diagnosis done on it because my check engine light was on and it came up as a boost pressure sensor but I got advice that I can adjust the exhaust wastegate actuator and it would work. Well I did such thing and I took it for a test drive and the turbo still isn't functioning right. The check engine light is gone but it runs how it would with no turbo and revs up to about 5K rpm and still has no power from the turbo. I need help please

My car has 67000 miles.
My car has an automatic transmission.

Hi there. The wastegate actuator is not functioning correctly or the boost sensor is not working making the turbo boost properly. Check the wastegate actuator hose and see if its broken and listen for leaks when you drive the vehicle. If there is no boost pressure, then the wastegate is releasing all of the boost. If the wastegate is moving and opening the wastegate, then the turbo could be damaged and not rotating. With the engine off, remove the intake hose to the turbo and see if the shaft on the turbo spins. If the shaft does not turn, then the turbo would need to be replaced. If the vehicle was driving on the highway for a while and then shut down without idling the engine for 1 minute, then the bearings on the turbo will seize up due to a hot shut down. If the turbo is shaft is spinning and the wastegate is functional, then the boost pressure sensor is not working causing the actuator to not function. If you need further assistance with turbo not working, then seek out a professional, such as one from Your Mechanic, to help you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. My turbo will sometimes work and sometimes will not work.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Cannot get trunk open after using Valet mode

If your vehicle has a valet switch, it should be located on the interior of the vehicle. This switch is often times hidden in the glove compartment somewhere. Whichever button you pressed to activate the valet feature is the same...

Q: Location of the door actuator that controls the defrost floor and vents. Controls where the air goes through.

I will tell you where it is located, but it requires the removal of the glove box to access it. In addition, there are

Q: I have a 1998 lexus gs4oo. I was driving it, and all of a sudden it started to die on me, it didn't die all of a sudden ,it kinda

There are a couple of sensors in your car that regulate the flow of fuel and air into the car's engine. One is called a mass air flow sensor. This regulates the air flow into the car's engine to make...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...