2003 VW LT35 - Turbo Whistles & Loss of power

[GeorgeOK]

Hi Rob, sounds like you need a new fuel filter.

[rayl]

Hi Robertwo, the milage is nice and low for the year, take it its not had a hard life ? when you say vw did a service do you know which service they did as georgeok said the fuel filter may need a change if never been done before or a long time ago, ref the turbo whistle mine has done that since new (53plate 400,000plus miles) had a new turbo when van was young 1yr ish but not changed due to whistle, but new turbo whistled and still does to this day on slow down not had any probs from it though, a couple of others on here may give there opinion on the whistle as to if its a problem or not, you seem to have checked the obvious items, if it has not been done already may i sugest that the cam belt get changed sooner than later if its the original belt, this one little item seems to be the devil that kills most good lt engine's off when they snap, a bit £££££ when done by vw but certainly cheaper than a new engine.

[anilkumar]

hi threre my dad has a lt 35 2.5 tdi 05 with 137 k on it. is it normal to have a quite a bit of lag in 1st and 2 gear but when in 3rd it fliles owner before me used to change oil every 5 k due doing lots of motorway miles timing belt being done and a new turbo a few thosuand miles ago

[rayl]

Hi, never had a noticable lag in first and second gear power has been there through all the gears with mine, check pipes going to and from turbo, seating, condition, clips etc, although when i think back to when van was brand new in 2004 on first pull away from cols she used to chuck black smoke out and cough stutter then was alright for rest of day, was called back if memory serves right for a new ecu as some had faults in them, but been fine since...ray

[milljoo]

hi,you have probably sorted your loss of power problem by now. i thought i would say about my van, LT35 158BHP, also loosing power. i could hear a hissing noise, which i thought was the rubber hose from the turbo to the intercooler. spent days checking, they were all o.k. then i found a split in the plastic end cap of the intercooler!! so for £85 (G.S.F) fitted a new intercooler, sorted.

[boisty]

Take a look at the following link: LT35 Losing Power

7 pages of threads regarding a similar condition which may help.