robertwo
15-03-2008, 01:23 PM
Hi (sorry for the essay below)
As the title suggests I have a 53 Plate VW LT35 109 bhp that has done about 69,000 miles.
The problem I am having is that the Turbo seems to be getting louder, by this I mean I keep hearing whistling, usually when I let off the accelerator as it is hard to hear over the engine noise otherwise.
The other problem is that randomly the van loses power momentarily, usually in 4th or 5th gear. The loss of power is hard to describe, but it feels like for instance a release of pressure has happened - it happens so quick it is hard to judge a speed that it happens at, type of road conditions etc....
I changed the oil a few days back and this problem has become less noticable. I was traveling before the oil change on a journey of about 50 miles and this was happening every few miles. I did the same journey yesterday and this problem only occured a couple of times. I'm not sure on the specifics, but I think it happens when accelerating in 4th or 5th when around 45-55mph.
A little history on the van - I only purchasd it back last november and I didn't notice this problem until I sent it to VW to have it checked over as I was going to be out of the country for over a year with the van. They found that there was a problem with some pipes from/to the Turbo and that there was a leak on the intercooler (sorry not sure if thats correct - I mean the shinny silver radiator in the front fo the van where these pipes go to). Anyway, VW replaced these and serviced the van at great expense to me and the van has run good ever since, except now and again this loss of power happens, but it was so infrequent that I didn't worry about it until now.
Things I have checked - Air filter is clean; tightened all the clips on the large rubber hoses from the turbo; changed oil (not filter); added some redex to a tank of diesel to see if it helped any (it might have a bit or it could have been the oil change as both done at the same time). The oil was replaced with a Elf (I think) 10W40 oil that meets the VW 505.000 specs.
BTW, the vans accelerates fine, starts perfectly (actually starts better cold than hot), drives fine, no smoke ect
I'd be grateful to hear from anyone with any ideas as I will not be back int he UK with the van for a few months so would like to try and solve this if possible.
Thanks
Rob.
As the title suggests I have a 53 Plate VW LT35 109 bhp that has done about 69,000 miles.
The problem I am having is that the Turbo seems to be getting louder, by this I mean I keep hearing whistling, usually when I let off the accelerator as it is hard to hear over the engine noise otherwise.
The other problem is that randomly the van loses power momentarily, usually in 4th or 5th gear. The loss of power is hard to describe, but it feels like for instance a release of pressure has happened - it happens so quick it is hard to judge a speed that it happens at, type of road conditions etc....
I changed the oil a few days back and this problem has become less noticable. I was traveling before the oil change on a journey of about 50 miles and this was happening every few miles. I did the same journey yesterday and this problem only occured a couple of times. I'm not sure on the specifics, but I think it happens when accelerating in 4th or 5th when around 45-55mph.
A little history on the van - I only purchasd it back last november and I didn't notice this problem until I sent it to VW to have it checked over as I was going to be out of the country for over a year with the van. They found that there was a problem with some pipes from/to the Turbo and that there was a leak on the intercooler (sorry not sure if thats correct - I mean the shinny silver radiator in the front fo the van where these pipes go to). Anyway, VW replaced these and serviced the van at great expense to me and the van has run good ever since, except now and again this loss of power happens, but it was so infrequent that I didn't worry about it until now.
Things I have checked - Air filter is clean; tightened all the clips on the large rubber hoses from the turbo; changed oil (not filter); added some redex to a tank of diesel to see if it helped any (it might have a bit or it could have been the oil change as both done at the same time). The oil was replaced with a Elf (I think) 10W40 oil that meets the VW 505.000 specs.
BTW, the vans accelerates fine, starts perfectly (actually starts better cold than hot), drives fine, no smoke ect
I'd be grateful to hear from anyone with any ideas as I will not be back int he UK with the van for a few months so would like to try and solve this if possible.
Thanks
Rob.