IceBoy Posted July 21, 2007 Report Posted July 21, 2007 Hi All, I was in a bit of a hurry and did some fairly brisk motoring on the motorway and A roads for about 45 miles. I probably averaged about 18mpg....so that might give you an idea of the style of driving adopted. This morning the turbo seems to be whistling rather than whooshing ?? Help.....getting worried now? IceBoy (getting very hot under the collar) Quote
seatkid Posted July 21, 2007 Report Posted July 21, 2007 18 mpg in a TDi?? I'd be worried about that! :lol: You could have a boost leak.....Check boost piping is all secure. Check the joints for leaks. Also check the intercooler - it may be holed. If the whistling is very loud and pure in tone - the turbo may be damaged (unbalanced vanes). If the whistling is musical then it may be your passenger - trying to contain their anxiety! :18: Quote
big_kev Posted July 21, 2007 Report Posted July 21, 2007 18 mpg in a TDi?? I'd be worried about that! :lol: I think you can manage it if you keep it above 4,000 rpm for sustained periods. Quote
mumof4 Posted July 21, 2007 Report Posted July 21, 2007 But in a tdi..4000 revs is really thrashing it!!..wont do it any good at all.The engine would be screaming at you.. Quote
big_kev Posted July 21, 2007 Report Posted July 21, 2007 What ! Are you saying it could damage the turbo and cause it to whistle ? Quote
mumof4 Posted July 21, 2007 Report Posted July 21, 2007 Well it aint gonna play "whistle while you work" on the banjo is it. Quote
GSMGuy Posted July 24, 2007 Report Posted July 24, 2007 (edited) What ! Are you saying it could damage the turbo and cause it to whistle ? Well it aint gonna play "whistle while you work" on the banjo is it. Regardless of what anyone says, modern diesels, are DESIGNED to operate at speeds upto and including max revs for whatever period of time is required, PROVIDED they are maintained as per the manufacturers service schedules... The problems come when either, those limits are exceeded, or maintenance is not carried ou. Redlining it shouldn't cause harm, although it may reduce longevity due to the accelerated wear rates at proportionally higher speeds... Just my 2p Mike Edited July 24, 2007 by GSMGuy Quote
Neils TDi again Posted July 25, 2007 Report Posted July 25, 2007 Variable geometry turbos are very capable of performing at the limit of the red line however as previously said the maintenance is paramount. Many Nissan vehicles which employ the same manufacturers turbo have suffered loss of blades after prolonged "expressed driving" and have been subject to recall and repair maybe this is a future for ours ? Quote
Dave-G Posted July 25, 2007 Report Posted July 25, 2007 You might have simply cleared off some gungy stuff and got it working properly. I'm into my fourth Shalaxy - the turbo could easily be heard on my first and my current one. A pleasing sound I might add - as one who is sometimes easily pleased by simple things in life. Either that or my old ears are regenerating themselves B) Quote
b318isp Posted July 27, 2007 Report Posted July 27, 2007 Hope you let the turbo cool down by idling for a few minutes... Quote
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