Stonkin Posted August 3, 2010 Share Posted August 3, 2010 Hi, I seem to have a kind of high pitch squeek / faint rattling noise coming from inside the cam belt cover. You can mainly hear this on start up from cold, but not always. But i can very slightly hear it at other times to, but very intermittant. I have done the tipex test on the crank pulley and it hasnt moved at all. Any ideas what could cause this in this area? Cheers Quote Link to comment Share on other sites More sharing options...
caseys Posted August 3, 2010 Share Posted August 3, 2010 Sure it's not your pre-tensioner pulley? They can squeak sometimes. Quote Link to comment Share on other sites More sharing options...
Stonkin Posted August 3, 2010 Author Share Posted August 3, 2010 I have no idea Caseys, its been pointed out to me whilst the car has been in having a few bits done lately. At first i thought it was going to be the crank pulley, but that seems fine. Which one is the pre-tensioner pulley, say from this diagram? http://www.mkivsupra.net/vbb/attachment.php?attachmentid=13964&d=1112559911 The crank pulley is the blue one in that pic isnt it, was slightly unsure by the arrow. Is this bad? what are the effects of it squeeking? Quote Link to comment Share on other sites More sharing options...
caseys Posted August 3, 2010 Share Posted August 3, 2010 (edited) It's the one directly above the crank pulley chap (right under the blue cover) edit : Not known one to fail drastically, but of course it's keeping the tension in the belt for you... so no tension = bad. Sorry went searching for a part number as I sold one a little while ago but my for sale thread must've gone in the last forum housekeeping. About £105-109 new iirc, Whifbitz or Keron may be able to do cheaper than OEM from Mr.T, but always worth asking Mr.T for a cheeky discount Edited August 3, 2010 by caseys (see edit history) Quote Link to comment Share on other sites More sharing options...
Stonkin Posted August 3, 2010 Author Share Posted August 3, 2010 Thank you mate. Not sure what to do with that then apart from keep my eye on it Quote Link to comment Share on other sites More sharing options...
caseys Posted August 3, 2010 Share Posted August 3, 2010 Thank you mate. Not sure what to do with that then apart from keep my eye on it Well as said, I don't know what happens when it fails, but they do wear and squeak. If you don't have tension in that belt be aware that you won't have things like oil pressure / water pressure possibly... or an alternator. I'm sure some of those are pretty much vital Hopefully someone will be along soon to tell us what happens when they fail, always replaced mine when they started getting noisy. Also when did you replace your aux belt? Quote Link to comment Share on other sites More sharing options...
Stonkin Posted August 3, 2010 Author Share Posted August 3, 2010 I havent changed any belts myself on the car yet. When the last service was done a few hundred miles agao i checked the cambelt replacement with b'have and he said that was about 10k ago. Have just been doing some searching on here, so this is also known as the aux belt tensioner? I presume it is the bearings failing in it that cause the squeek? Quote Link to comment Share on other sites More sharing options...
caseys Posted August 3, 2010 Share Posted August 3, 2010 Have just been doing some searching on here, so this is also known as the aux belt tensioner? I presume it is the bearings failing in it that cause the squeek? Correct and correct I believe CW here can refurb them if required too.... refurb or uprate iirc. Aux belt is circa £60-70 from memory, more expensive than the cam belt! Quote Link to comment Share on other sites More sharing options...
Dnk Posted August 3, 2010 Share Posted August 3, 2010 (edited) If your on about the Aux belt tensioner then i just bought one from Steve Manley and discounted cost me £123 inc vat Take the tension off remove the belt and see if its got any play in the bearing, also spin it by hand and you might hear it squeeking If it fails you will lose the water pump, power steering pump, alternator and a/c Edited August 3, 2010 by Dnk (see edit history) Quote Link to comment Share on other sites More sharing options...
Stonkin Posted August 3, 2010 Author Share Posted August 3, 2010 Thanks for the heads up DNK Quote Link to comment Share on other sites More sharing options...
Dnk Posted August 3, 2010 Share Posted August 3, 2010 (edited) Thanks for the heads up DNK My pleasure, for your info Whifbitz quoted me £160 + vat for the tensioner ! Steve Manleys def worth a call, if you can't get any decent discount let me know and i'll sort one out for you. I have a brand new one sat here if your in desperate need but usually SM gets parts in a couple of days. Edited August 3, 2010 by Dnk (see edit history) Quote Link to comment Share on other sites More sharing options...
Stonkin Posted August 3, 2010 Author Share Posted August 3, 2010 As soon as the car is back i'll try and pin point where the noise is coming from. Just trying to make the car as safe as possible for a good day at pod Quote Link to comment Share on other sites More sharing options...
Stonkin Posted August 5, 2010 Author Share Posted August 5, 2010 This was indeed the aux pulley, the bearings in it had gone. Its been replaced along with a new belt and no more squeeking. Cheers guys Quote Link to comment Share on other sites More sharing options...
caseys Posted August 5, 2010 Share Posted August 5, 2010 glad it's sorted! And now you don't have to worry about belts or pulleys for a fair while (if going by regular service int) Quote Link to comment Share on other sites More sharing options...
Stonkin Posted August 5, 2010 Author Share Posted August 5, 2010 indeed mate Just my pig of a boost problem now as per the thread in chat. I'm waiting for the phone call after a road test this morning, i just know its still gona be making about 0.8 bar Quote Link to comment Share on other sites More sharing options...
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