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hissing noise


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#1 matt b

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Posted 24 October 2008 - 06:36 PM

hi all ive got a focus st170 and its developed a hissing noise a few seconds after you change gear and it also does it sometimes just when your diving along as well. it sounds like its coming from the dash but i suspect its on the engine bay side of the bulkhead, could the gearchange thing be related to the noise?? im proper puzzled with it

and also my revs have started to stick aswell ive checked the peddle is not sticking and its fine could this be something to do with the throttle body????

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#2 Matt_focus_zetec

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Posted 25 October 2008 - 12:20 PM

have you got a dump valve that may have failed or soemthing along hte lines of that

Matt

#3 matt b

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Posted 25 October 2008 - 06:11 PM

no mate i aint got a dump valve

matt

#4 mintalkin

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Posted 25 October 2008 - 07:20 PM

check for any loose or split boost/turbo pipes

#5 Matt_focus_zetec

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Posted 30 October 2008 - 11:24 PM

Or long shot turn ur steering full lock as hard as you can see if it makes it then my charlottes fiesta does that makes some strange noise come to think of it so does my focus and the dump valve was just to rule it out

Matt


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