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Subject Topic: Stop Start Technology Post Reply Post New Topic
PersonTrigGLX
15/8/2012 at 8:23pm
 Location: Manchester
 Outfit: Swift Challenger 524 View TrigGLX's Profile View Profile   Reply to TrigGLX Reply   Quote TrigGLX Quote  
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Ok, have been reading some posts on here about premature turbo failure, due to turning engine off after a motorway drive or towing etc, when the turbo has not spun down, and the oil supply has ceased.

So my question is how does this effect new cars with stop start technology, the reason being we are due to get our new car in October a Vauxhall Antara 2.2 diesel with start stop technology, and was wondering about this, when towing etc. We currently have a V70 diesel and i always let the turbo spin down and idle for a few minutes after stopping at service station when towing etc, so am aware of the situation, its just this start stop technology seems to go against convention.

Anybody got any thoughts.
cheers
chrisw


PersonGrampian91
15/8/2012 at 8:32pm
 Location: Midlands
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The turbo only needs to spin down after its been driven fairly hard.
If your pottering or in traffic then your not really pushing the turbo.

Coming off a motorway services the slowing on the sliproad should be enough to allow the oil to take some of the heat away.

If you pulled off after pushing it hard then stopped instantly then it maybe an issue.

Not sure how quickly the stop start would activate in that situation?


Persondiesel steve
15/8/2012 at 10:20pm
 Location: fife
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a mate got a new freelander with that stop/start device fitted, first week of ownership was in a traffic jam and battery went flat due to the number of times it stopped and started.


PersonMinesapint
15/8/2012 at 10:38pm
 Location: None Entered
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I have audi start stop and with the automatic gearbox it works very well. Ive an audi factory fitted towbar and when the van is connected it disables the start stop I dont know if this is standard across all makes but it would make sense.

a turbo works on exhaust gases so if youre decelerating wouldnt the turbo not be spooling anyway?


Persontrottster
16/8/2012 at 6:51am
 Location: plymouth
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Stop start will disable if the battery state of health drops below 80% approx


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Persondinkum
16/8/2012 at 6:54am
 Location: crewe
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What about wear and tear on the starter motor, battery and solenoids. I assume they are still fitted (LOL) or has "software" taken over ? Stop start technology could cost more than it saves?   Seriously though, it is a very good question about turbo bearing life and oil feed.

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cramming for my finals in the twilight zone


Person664DaveS
16/8/2012 at 9:16am
 Location: Shropshire
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You can normally turn off the stop start feature.

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DS-There's more to life than football!!!


Persontimtheenchanter
16/8/2012 at 11:45am
 Location: Yeadon Leeds!
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the battery should never go flat, IFIAK all the cars with start stop have battery monitoring, so if the charge drops, it doesnt stop the engine until power has raised, just as, if you are in traffic and using radio/aircon etc, if the power drops it will restart the engine.

some cars with start stop when programmed for towing disable start stop whilst towing.

hopefully they would have thought about the turbo issue, the turbo in my sedona never stops spinning when the engine is running, it may not be creating much, if any boost, but take the intake air pipe off, and its defiantly shoving air through.

I would hope that they monitor the oil temp, and have a run on if the oil temp if high, a bit like the turbo timers you can get for subarus etc to the engine runs for X amount of time after removing the key etc.


Personbessie500
16/8/2012 at 12:48pm
 Location: Lancashire
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I heard that the stop start starter motors were fitted in the flywheel on certain cars, if the starter packed up the cost to replace was around 4k 

As time goes by these repairs will become cheaper same as the Ford DMF thats now cheaper than when 1st reported. If my car was fitted with stop start i'd just turn it off the main point of it is to reduce the car tax bracket via the emmisions & reduce  consumption  

Bessie 


PersonZafiral
16/8/2012 at 1:31pm
 Location: Kent
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You have to turn it off each journey. When ever you turn off the ignition it defaults back to active.

There is no way I will run a modern car without a comprehensive extended warranty in place.



-------------
All year Dorset!!!


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Personfreeatlast
17/8/2012 at 4:33pm
 Location: Teesside
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My car has a handbook page full of exceptions when the stop start facility becomes inactive. Clearly they have thought about the problems stop-start can cause, including wear and tear. It certainly has a mind of its own.

When towing, the engine revs in mine are only about 1500 to 2000, barely into the turbo boost range.


Personamara 520
19/8/2012 at 7:30pm
 Location: chesterfield
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vehicles with stop start generally have a heavier duty battery and starter motor than same models without stop start



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