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chris_uk

 posted on 19th Jun 08 at 15:16

what i dont get is that it never did it 2 days ago and it just started yesterday..

there is no reason for it..


RCS

 posted on 19th Jun 08 at 15:14

But yeah that is a common noise. The initial swoosh is caused by the sudden change in pressure difference as the throttle plate angle changes quickly.

This is why you see acceleration fuelling settings in ECU's, to accomodate for this phenomena.


chris_uk

 posted on 19th Jun 08 at 15:08

naa just the one.

http://www.corsasport.co.uk/board/viewthread.php?tid=437454

[Edited on 19-06-2008 by chris_uk]


RCS

 posted on 19th Jun 08 at 15:05

Sorry thought you had individual throttle bodies :look:


Mike GSi

 posted on 19th Jun 08 at 13:51

alot of TB's make that noise, my Clio 16v Used to make that noise but you couldnt here it with the airbox on.

as did my mates MG ZR


chris_uk

 posted on 19th Jun 08 at 13:29

what you mean one throttle?


RCS

 posted on 19th Jun 08 at 12:57

Is it just the one throttle making the noise?


chris_uk

 posted on 19th Jun 08 at 11:46

quote:
Originally posted by Planty02
when you plant your foot nad it mkes the noise, is there a split second hesitation before the power comes?


nope instant.


chris_uk

 posted on 19th Jun 08 at 11:45

yea but that was AGES ago..

you can see how shiney it all is in the pic..

but i never went anywhere near the butterfly valve. and it all looks the same as before. (inside)


jr

 posted on 19th Jun 08 at 11:40

didnt you do something weird to the tb chris like self port it ?


Planty02

 posted on 19th Jun 08 at 11:38

when you plant your foot nad it mkes the noise, is there a split second hesitation before the power comes?


chris_uk

 posted on 19th Jun 08 at 11:36

no lol

i was showing my mate the pull in 5th and it didnt do it.. then next time it did and its done it ever since.

power / performance dont seem to have changed.


Planty02

 posted on 19th Jun 08 at 11:25

started planting your foot more? :lol:


chris_uk

 posted on 19th Jun 08 at 11:24

thats what it sounds like, but its just wierd how it just started happening.

changed nothing.


Planty02

 posted on 19th Jun 08 at 11:22

Mines always done it since I got the car, I just assume its due to air being sucked into the throttle body tbh


chris_uk

 posted on 19th Jun 08 at 11:20

yea mine is the same, if you do it gradually it doesnt do it, just when you plant your foot.


Planty02

 posted on 19th Jun 08 at 11:14

sounds a little bit like the noise my 1.2 C makes when I stick my foot down (i.e. straight down)

..doesnt do it if i gradually open the throttle though :boggle:


chris_uk

 posted on 19th Jun 08 at 11:12

no its not scratchin as ive had it off and moved it about freely and its clear all the way round.


Matt L

 posted on 19th Jun 08 at 11:11

sounds like the part that moves is catchin the side of it (got the radio on and computer sound is shite :lol: )


chris_uk

 posted on 19th Jun 08 at 11:08

i heard it yesterday from low revs, sort of a swoosh noise, never heard it before and i know it hasnt been here in the past because you can really hear it.

ive located the noise back to the throttle body..

here is a video of what its doing.

http://www.youtube.com/watch?v=GIPmeIInWQ8