Small squeak from blipping throttle

Uncle_Gravy · Post by **Uncle_Gravy** » Wed Mar 08, 2017 5:43 pm

Hi all,

Another small issue on my zed (It will get there eventually), when changing down a gear I like to rev match but now and then I get a small squeak when I blip the throttle which sounds like its coming from the engine bay.

anyone had this issue and know a fix?

cheers.

buzyg · Post by **buzyg** » Wed Mar 08, 2017 6:30 pm

Uncle_Gravy wrote:Hi all,

Another small issue on my zed (It will get there eventually), when changing down a gear I like to rev match but now and then I get a small squeak when I blip the throttle which sounds like its coming from the engine bay.

anyone had this issue and know a fix?

cheers.

I'd suggest a squeaky belt, but you would here that at start up.

cj10jeeper · Post by **cj10jeeper** » Wed Mar 08, 2017 7:16 pm

Idler pulley is one possible, or even an air leak on the induction side. I've had both on the Zed
You need have a listen under the bonnet when it's hot

Uncle_Gravy · Post by **Uncle_Gravy** » Wed Mar 08, 2017 7:55 pm

Just come home from work and after reading about the Disa valve I thought i'd see if mine is due for a change, answer to that is i'll have to budget that in with the current fixes that need doing with the car as when i pulled the power connector off it made a slight difference with less rattley-"ness", but that's for another future E85 problems thread

But while I had my head down there I did not notice any squeaks or squealing, It only happens, and it happens randomly when blipping from lowish rpm.

patriot66 · Post by **patriot66** » Wed Mar 08, 2017 10:15 pm

Check the rubber boot that goes to the throttle body. It has a short, convoluted off - shoot that perishes and 'sucks' air making a squeaking or whistling noise. Mine did, so I replaced it.

peteslag · Post by **peteslag** » Thu Mar 09, 2017 10:39 am

patriot66 wrote:Check the rubber boot that goes to the throttle body. It has a short, convoluted off - shoot that perishes and 'sucks' air making a squeaking or whistling noise. Mine did, so I replaced it.

I had this exact problem. It doesn't make a sucking noise, more of a strange squeak when blipping the throttle.

Uncle_Gravy · Post by **Uncle_Gravy** » Thu Mar 09, 2017 11:01 am

patriot66 wrote:Check the rubber boot that goes to the throttle body. It has a short, convoluted off - shoot that perishes and 'sucks' air making a squeaking or whistling noise. Mine did, so I replaced it.

Is this easy to see by just shoving my head under the bonnet?

cj10jeeper · Post by **cj10jeeper** » Thu Mar 09, 2017 11:28 am

RHS of engine viewed from front
big convoluted hose towards rear of block has a small T pipe off it. That splits and tears
Might need a mirror to see around it but touch it with engine running and you'll hear it hiss or squeak if split

peteslag · Post by **peteslag** » Thu Mar 09, 2017 11:33 am

Uncle_Gravy wrote:
patriot66 wrote:Check the rubber boot that goes to the throttle body. It has a short, convoluted off - shoot that perishes and 'sucks' air making a squeaking or whistling noise. Mine did, so I replaced it.
Is this easy to see by just shoving my head under the bonnet?

I found it by getting the missus to sit in the car and blip the throttle whilst I had my head under the bonnet. I found the fault in seconds this way.

Uncle_Gravy · Post by **Uncle_Gravy** » Thu Mar 09, 2017 11:54 am

Cheers lads, I'll have a gander when I finish work.

Uncle_Gravy · Post by **Uncle_Gravy** » Sat Mar 11, 2017 10:27 pm

So I had my hand around the pipe (that kinda sounds wrong) this afternoon, feels and from what I could see it's in good condition, so don't think its that.

patriot66 · Post by **patriot66** » Sun Mar 12, 2017 11:28 am

Uncle_Gravy wrote:So I had my hand around the pipe (that kinda sounds wrong) this afternoon, feels and from what I could see it's in good condition, so don't think its that.

OK, then it may possibly be anywhere amongst the CCV collection of hoses/pipes/unions etc. Lots of plastic/rubber that age hardens and splits etc. I have replaced the complete setup on my car also. Not difficult but a bit fiddly/time consuming to do.
Also check your DISA valve for wear and tear especially the seals.

patriot66 · Post by **patriot66** » Sun Mar 12, 2017 11:29 am

Uncle_Gravy wrote:So I had my hand around the pipe (that kinda sounds wrong) this afternoon, feels and from what I could see it's in good condition, so don't think its that.

OK, then it may possibly be anywhere amongst the CCV collection of hoses/pipes/unions etc. Lots of plastic/rubber that age hardens and splits etc. I have replaced the complete setup on my car also. Not difficult but a bit fiddly/time consuming to do.
Also check your DISA valve for wear and tear especially the seals.

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