Should we be using a set time for the turbo to cool down before shutoff?
Why is there not a set turbo timer on the touareg? Not needed?
Why is there not a set turbo timer on the touareg? Not needed?
Turbo cool down period?
FLTouaregTDIGuy
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Should we be using a set time for the turbo to cool down before shutoff?
Why is there not a set turbo timer on the touareg? Not needed?
Why is there not a set turbo timer on the touareg? Not needed?
For most people I don't think it should be an issue. By the time I get off the freeway and through my neighborhood at 25 mph I figure than the turbos are as cool as they are going to get. The engine is the last thing I shut off when I park the car and the first thing when I get in it. By the time I've fiddled with the seat belt, cell phone, change and anything else I am carrying it's usually a good 20 to 30 seconds or more. However the one time that I do pay particular attention is when pulling off an interstate to fill up then I will either let the car idle for a couple of minutes or even leave it running while I fill up if I am in a hurry.
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I watch my oil temps before I shut the engine down, as long as it's below 90 I shut her down. If the temps are up a bit I wait a minute or two for it to cool off. I believe there may actually be a pump that circulates the oil ever few minutes after shut down to avoid cooking the turbo. But I have no evidence to support this belief.
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Where can I find the oil temp? Is it a setting somewhere?
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I programed my MFD with vcds to display it, i'm not sure if it's possible in the 2013's.
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All I know is that the R5 touareg's turbo is oil cooled only so it takes longer to cool down!
There is no oil circulation pump, just coolant circulation pump.
Think of the car as an athlete. Depending on driving (running) let it idle till it catches it breath.
A turbo can get very hot. If it's been working hard and you shut down the turbo heat will cook the oil in the bearings (due to no circulation that cools the turbo and provides fresh oil constantly) and cause varnish that overtime blocks the oil passgaes and starves the bearing of oil - turbo failure.
There is no oil circulation pump, just coolant circulation pump.
Think of the car as an athlete. Depending on driving (running) let it idle till it catches it breath.
A turbo can get very hot. If it's been working hard and you shut down the turbo heat will cook the oil in the bearings (due to no circulation that cools the turbo and provides fresh oil constantly) and cause varnish that overtime blocks the oil passgaes and starves the bearing of oil - turbo failure.
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English lol? I'm new don't know all those terms
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MFD is the screen between the rev counter and the speedometer.
VCDS [also referred to as VAGcom] is the software used to read error codes, reset them and generally tweak computer bits on VAG cars.
VAG? That's Volkswagen Audi Group.
But since you are asking "English lol?", what's "lol"?
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Thanks a ton 
. That's very helpful
. That's very helpful
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Not true, it's not the seals that's a big concern, but coking of the oil in the bearing chamber over time, and the sudden loss of oil pressure while the turbo is still spinning at loaded speeds. Synthetic oil has greatly ( but not completely) reduced the first concern, but the run down period without adequate lubrication ( and cooling, of course) is the big damaging agent. Just give it a minute or so, after heavily loaded power ( highway speeds etc) to cool down, and slow down, and your turbo will last for a very long time. Easy peasy.
Exactly the reason why modern turbos are also cooled with coolant and a auxillary pump when the engine is turned off. If you feel the need to do a run down everytime your about to shut off your engine, then by all means do so.
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True, some engines use jacket cooling water to help cool the turbos centre bearing section, but not all. And unless you have an additional source of pressurized lubricating oil, you still have bearings, both ball, and sleeve, running from load speed, say 26,000 rpm to stop, with only residual lubrication. Cooling is only part of the turbo run down process.
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My modern day R5 touareg's turbo is oil cooled only.
Corrrect you are. Although ive never actually replaced any turbochargers on a touareg thats come in, other techs have. But at that point (100k miles or more) other factors come in as to why it failed in the first place. Whether it be the auxillary pump or just something as simple as not changing their oil reguarly. I cant say, but there are systems in place to extend turbo life in (modern) day vehicles.
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Yes, it's called idling down and your owners manual tells you to do it.
Regular oil changes, waiting for operating temp before gunning it, and idling down will make your turbo outlast the car.
The owners manuel also states that you should take it easy on your engine for the first 1k miles or so, but fails to mention that the engine is broken in already from the factory. My .02 cents, take it from a tech, but unless you have any proven data that would suggest either way, then please, share the wealth. But unless your just driving to and from the store and not doing any rigorous running then i see no point.
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I just checked on ELSA and there is no indication that the turbochargers fitted on the 3.0 V6 CATA engines universal in NA are cooled by anything other than the lube oil. They show no connection to the jacket water system whatsoever. Maybe these 2012, 2013 engines aren't "modern"?
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Not all engines are bed in from the factory and even if they run it in the factory it's still a good idea to take it easy until all the metals have settled to each other.
Yes, idling isn't always necessary but some common sense goes a long way. If you have been gunning it on the mptorway and pull over then please idle down as the turbo is red hot and will quickly cook the oil to a varnish if the circulation stops.
But, if you have been pottering around town and been looking for a parking space and taking 2 minutes getting your SUV into a tight spot then, yes, by all means you can shut her down immediately.
Even letting the car idle while you het all your stuff out the car, open the house door for the missus en then just go back and pull the key makes a big difference to the turbo temp. Why risk it. Once you make a habit of it, it's no longer a pain but just part of the regime.
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Perhaps you could spread your knowledge then, and advise us which Touareg diesel specifically have water cooled turbochargers fitted.
And as for broken in from the factory? Please, it will have been initially run in, but saying, or implying that it is broken in unfortunately indicates a basic lack of understanding of diesel engineering.
And as for broken in from the factory? Please, it will have been initially run in, but saying, or implying that it is broken in unfortunately indicates a basic lack of understanding of diesel engineering.
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