Whistle when taking off

[Steevo Member Find all posts View Profile Close Steevo]

Gday all I know its hard without hearing it but when I take off in my 3.4 litre there is what I can only describe as a sort of a whistle, almost sounds like a turbo. Its been doing it for awhile now and was doing it before snorkel install. The more the throttle is pressed the louder/more intense it seems. Do you think it could be a vacum leak somewhere? or any ideas?. I don't reckon my vehicle has the power it should have, could this have something to do with it?. I had it serviced a couple of months back (major service) at Toyota and they would have picked up a vacum leak if it was one, yes?. Its due for another service again (we did 8500km on the trip) anything particular I should get them to check?
Any advice appreciated

Cheers Steve

[milleroz Lurker Find all posts View Profile Close milleroz]

hi steve did you have any replies on this? mine does the same aswell. I think its an exhaust issue

[Palko Lurker Find all posts View Profile Close Palko]

Same Same. Only bought my 2002 yesterday. Drove it home to Adelaide from Hay. Hissing noise (like sucking air noise) on acceleration. Has anyone got any ideas on this? Or are we the only three in Oz?

[brissy Member Find all posts View Profile Close brissy]

yes I have also heard this on occasion, yet to track down the source, seams to be only under moderate to heavy acceleration

[Radix Junior Member Find all posts View Profile Close Radix]

I have the same, and it puzzles me. It's a medium whistle, (not sharp high) and not quite a hissing sound, it has a tone to it. Bit like a cooing pigeon. (weird eh)

Only when accelerating from stationary, when accelerating at a pace, and seems to get louder with higher acceleration.