Bad Turbo
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June
- Posts: 2275
- Joined: 4 May 2016
- Year and Model: 2004 S80 T6,1991 740
- Location: Arkansas
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If the oil feed line were to rupture I imagine that would do it. I believe it's part of pressurized system. Oil would certainly be everywhere! June
My Volvo cars owned
1989 740 GLT ordered
1994 850 4door standard shift ordered
1996 960 ordered
1998 S90 ordered totalled after 3 weeks
1998 V70 GT dealer stock car
2002 S80 T6 ordered totalled
2004 S80 T6 dealer stock car and current car owned
1989 740 GLT ordered
1994 850 4door standard shift ordered
1996 960 ordered
1998 S90 ordered totalled after 3 weeks
1998 V70 GT dealer stock car
2002 S80 T6 ordered totalled
2004 S80 T6 dealer stock car and current car owned
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SuperHerman
- Posts: 1798
- Joined: 1 December 2014
- Year and Model: 2004 & 2016 XC90
- Location: Minnesota
- Been thanked: 207 times
In your other post you mentioned numerous items. My response was for you to provide more information.
As June states if the oil feed line to the turbo fails and the oil is pumped out the failure point a failed turbo line could cause the problem you mention. But - the turbo is not the cause.
Without knowing what was done to the car we can only speculate. Here is my speculation - the work performed on the oil pan (assuming it was done) caused your problems. If the oil seals were not installed correctly one would have no oil pressure. If the oil pan was not dropped and it was sludged up and/or the oil seals failed this could have also been the cause of your lack of oil pressure. Many have lost their engines due to failed o-rings in the oil pan and/or sludge.
The system is sealed. If you have 5 quarts in there and it doesn't leak you will either be smoking like crazy as it burns so much oil (I am talking a serious fog that all would notice), or you have 5 quarts in there. When your wife added oil, assuming no leaks, you had 5.5 quarts of oil - but the system could not build enough pressure because of the bad oil seals or sludge. Too much oil will also cause engine failure, but most likely not at the turbo. It is called engine cavitation - basically the oil is frothed with air so bad it cannot lubricate. I would guess by the time the oil got to the turbo it will have settled enough. Usually the main bearings are what fails due to cavitation.
I cannot answer you question because you have not provided enough information.
I will say that a turbo without oil will seize up, but this will make some serious noise and it will have lack of power symptoms during the process.
I cannot find an oil flow diagram for the engine, but as the engine is made without a turbo, I would assume the rest of the engine will still get oil. All the oil does not follow one single path (the turbo oil line), but I am not certain what a failure of the turbo oil line would cause to the internal oil pressure valves. I would assume that Volvo would not design the system to fail if the turbo was taken out - just doesn't seem like a smart way to handle such a problem. It would be designed with a fail safe to keep lubrication going for the rest of the engine.
Wrapping up - answer the questions of what was done to your car. You had/have an oil pressure problem which was not solved and the turbo was just one of the victims of the problem.
As June states if the oil feed line to the turbo fails and the oil is pumped out the failure point a failed turbo line could cause the problem you mention. But - the turbo is not the cause.
Without knowing what was done to the car we can only speculate. Here is my speculation - the work performed on the oil pan (assuming it was done) caused your problems. If the oil seals were not installed correctly one would have no oil pressure. If the oil pan was not dropped and it was sludged up and/or the oil seals failed this could have also been the cause of your lack of oil pressure. Many have lost their engines due to failed o-rings in the oil pan and/or sludge.
The system is sealed. If you have 5 quarts in there and it doesn't leak you will either be smoking like crazy as it burns so much oil (I am talking a serious fog that all would notice), or you have 5 quarts in there. When your wife added oil, assuming no leaks, you had 5.5 quarts of oil - but the system could not build enough pressure because of the bad oil seals or sludge. Too much oil will also cause engine failure, but most likely not at the turbo. It is called engine cavitation - basically the oil is frothed with air so bad it cannot lubricate. I would guess by the time the oil got to the turbo it will have settled enough. Usually the main bearings are what fails due to cavitation.
I cannot answer you question because you have not provided enough information.
I will say that a turbo without oil will seize up, but this will make some serious noise and it will have lack of power symptoms during the process.
I cannot find an oil flow diagram for the engine, but as the engine is made without a turbo, I would assume the rest of the engine will still get oil. All the oil does not follow one single path (the turbo oil line), but I am not certain what a failure of the turbo oil line would cause to the internal oil pressure valves. I would assume that Volvo would not design the system to fail if the turbo was taken out - just doesn't seem like a smart way to handle such a problem. It would be designed with a fail safe to keep lubrication going for the rest of the engine.
Wrapping up - answer the questions of what was done to your car. You had/have an oil pressure problem which was not solved and the turbo was just one of the victims of the problem.
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