[Bob M]

We have a 2021 GV80 with 3.5L turbo engine. A day after a dealer oil change, car lost power from 3000-6000 rpm range, shifted sluggishly. No check engine lights. All diagnostics were normal. No leaks or odd noises. Car just could not get up any grade or on the freeway safely. It was not fuel grade.

Took to another dealer for service. They found that the hose to the turbos was disconnected (had come off). Caused by the oil change tech not retightening hoses adequately after the oil change. Im
Sure this will happen to others…

Its odd to me that all the engine sensors and diagnostics failed to show ANY problem.

 

[tpagator]

This is great advice, I'm going to be checking after every oil change now. Thanks

 

[MLB007]

We have a 2021 GV80 with 3.5L turbo engine. A day after a dealer oil change, car lost power from 3000-6000 rpm range, shifted sluggishly. No check engine lights. All diagnostics were normal. No leaks or odd noises. Car just could not get up any grade or on the freeway safely. It was not fuel grade.

Took to another dealer for service. They found that the hose to the turbos was disconnected (had come off). Caused by the oil change tech not retightening hoses adequately after the oil change. Im
Sure this will happen to others…

Its odd to me that all the engine sensors and diagnostics failed to show ANY problem.

Turbo takes exhaust gases to spin a turbine to pressurize intake air. Not really anything to do with the engine running ok or not so i guess it could make sense. Does seem like some sensor would be involved doesn't it.

 

[MLB007]

so you have to remove turbo hoses to change the oil huh?

 

[08VG]

We own an automotive repair facility and do our own oil changes etc. So far have not needed to remove turbo hoses. Maybe a Hyundai Sonata tech practiced on yours? 2021 GV80 3.5 Prestige.

 

[Scott Bee]

We have a 2021 GV80 with 3.5L turbo engine. A day after a dealer oil change, car lost power from 3000-6000 rpm range, shifted sluggishly. No check engine lights. All diagnostics were normal. No leaks or odd noises. Car just could not get up any grade or on the freeway safely. It was not fuel grade.

Took to another dealer for service. They found that the hose to the turbos was disconnected (had come off). Caused by the oil change tech not retightening hoses adequately after the oil change. Im
Sure this will happen to others…

Its odd to me that all the engine sensors and diagnostics failed to show ANY problem.

I've had several recent events on my 2022 GV80 where I've experienced a loss of motive power while accelerating from stop. Dealership could not find any error codes, but verified that other GV80 owners have experienced the same issue.

Loss of motive power in GV80

Hello, I've had a 2022 GV80 since January 2022. On three occasions, I have experienced a loss of motive power. When I took it to the dealership, they were able to verify and replicate the issue, but the technician was not able to get a trouble code or repair code. Thus, the dealership was not...

www.gvforums.com

 

[Pearl]

We own an automotive repair facility and do our own oil changes etc. So far have not needed to remove turbo hoses. Maybe a Hyundai Sonata tech practiced on yours? 2021 GV80 3.5 Prestige.

 

[Pearl]

Check your heat on passenger side while you are at a stop .. our heater blows cold air on passenger side while we are at a stop ..
sounds like a major problem for Gv80 3.5