discojmz Posted December 13, 2007 Share Posted December 13, 2007 hi guys. had a squealing noise coming from somewhere fairly front central of the disco for a while now, and was losing my alternator and power steering when going through anything more than a deep puddle, but i tightened the belts up which cured the slippage but i still have the squeal. it occurs when i put my foot down and accelerate, up to about 2500rpm where it will stop. it also occurs when pulling up a hill at constant speed. it doesnt feel like the clutch is 'slipping' any amount per se, but would it scream like this? i know my release bearing is tired, it makes a wonderful rough sound on tickover out of gear when just stood (or is that my gearbox? only 17k old!!) help! it's driving me mad and knowing most things on discos it's happened a thousand times before. oh yes, L reg 200tdi cheers jim Quote Link to comment Share on other sites More sharing options...
IainDB Posted December 13, 2007 Share Posted December 13, 2007 couldbe the water pump? I had one go on a car once and that started squealing prior to dying? Quote Link to comment Share on other sites More sharing options...
discojmz Posted December 13, 2007 Author Share Posted December 13, 2007 only does it when engine is pulling the wheels though, i can sit it there ticking over, revving it whatever when not in gear and not a peep out of anything Quote Link to comment Share on other sites More sharing options...
discojmz Posted December 13, 2007 Author Share Posted December 13, 2007 someone must have come across this before?? i darent drive the thing in case im destroying things, not to mention it sounds embarrassing too haha! Quote Link to comment Share on other sites More sharing options...
Les Henson Posted December 14, 2007 Share Posted December 14, 2007 Remove the drive belts and check the pulleys/bearings on water pump/PAS pump/air con/etc,etc. If they all seem fine, then maybe your belts are glazed-up through age and just need replacing. Bear in mind that the PAS pump belt has to be quite tight relative to the alternator belt. Les. Quote Link to comment Share on other sites More sharing options...
ThreeSheds Posted December 14, 2007 Share Posted December 14, 2007 I saw something like this years ago - we removed all the belts and it still squealed but only under load... IIRC it turned out to be a small split in one of the hoses that go to the intercooler... Sounded a bit like belts though... TwoSheds Quote Link to comment Share on other sites More sharing options...
discojmz Posted December 14, 2007 Author Share Posted December 14, 2007 Remove the drive belts and check the pulleys/bearings on water pump/PAS pump/air con/etc,etc.If they all seem fine, then maybe your belts are glazed-up through age and just need replacing. Bear in mind that the PAS pump belt has to be quite tight relative to the alternator belt. Les. if it were belts etc though les, it would happen whether the vehicle was moving or stationary surely. this only occurs when im making the engine work. accelerating, pulling up hills etc. I can rev freely all day long stood still and cannot re-create the sound whatsoever, but yeah my belts are pretty new, the pullies didnt seem too polished and theyre all nice and tight I saw something like this years ago - we removed all the belts and it still squealed but only under load... IIRC it turned out to be a small split in one of the hoses that go to the intercooler... Sounded a bit like belts though...TwoSheds thanks mate. I'll give them a good looking over! i suppose theyre getting on for 14 years old so could well be! Quote Link to comment Share on other sites More sharing options...
Orgasmic Farmer Posted December 14, 2007 Share Posted December 14, 2007 Long shot but might be worth checking the front output bearings on the transfer box? though i would expect them to squeal all the time Quote Link to comment Share on other sites More sharing options...
discojmz Posted December 16, 2007 Author Share Posted December 16, 2007 still havent found the culprit. had the nice oily inlet pipes off and cant find any splits, checked the belts and bearings, all seem fine. not happy now. i cant believe its not something that has come up regularly before!? Quote Link to comment Share on other sites More sharing options...
discojmz Posted December 16, 2007 Author Share Posted December 16, 2007 ok, dont know if i mentioned this before but it does it on acceleration but if i drop a gear during engine braking, it does not. would a cambelt be under increased load under acceleration? it's this stops once the engine reaches 2500rpm-ish (on boost?) that's bugging me the only time i can listen for it is when im driving the damned thing, so im sorry i cant pinpoint it aurally any more than i am doing jim Quote Link to comment Share on other sites More sharing options...
marshall4771 Posted December 16, 2007 Share Posted December 16, 2007 Hi just a long shot but when mine started to squeal I thought it was the belts etc but I found it to be the manifold studs that had sheard and the gasket was vibrating causing a squeal but only under load. Shaun Quote Link to comment Share on other sites More sharing options...
discojmz Posted December 16, 2007 Author Share Posted December 16, 2007 thanks dude, i shall check that out as well!! however i just found out from receipts that although the cambelt is due as it was done 61k ago (this i knew), the 61k was 10 years ago and the idler and tensioner seem never to have been done!!! driving back home to do it is going to be a butt clenching experience whether it's the problem or not! Quote Link to comment Share on other sites More sharing options...
Les Henson Posted December 16, 2007 Share Posted December 16, 2007 Someone didn't do a proper job then as the tensioner/guide wheels should always be changed when the belt is. 72k miles or 5-years is the change interval. Les. Quote Link to comment Share on other sites More sharing options...
sotal Posted December 16, 2007 Share Posted December 16, 2007 I'm no expert and this is only a uess but if it only does it under load can you do it wuith your foot on the brake and the other foot on the accelerator - to generate load?? That way you could get a friend to do it whilst trying to work out where the sound was coming from?? Quote Link to comment Share on other sites More sharing options...
forklift Posted December 17, 2007 Share Posted December 17, 2007 I think this could be a totally un-mechanical fault. Check the little tiny rubber hose that goes from the turbo body to the wastegate, its about three inches long and will squeel like crazy if it has a small split in it....... Quote Link to comment Share on other sites More sharing options...
lynall Posted December 17, 2007 Share Posted December 17, 2007 Under load has got to be something under pressure like the intercooler side of things or the ex manifold, i have had both leak in various places on the TDI and the TD5. Common for TDI to spit out its inlet gasket between cyl 2 and 3. Lynall Quote Link to comment Share on other sites More sharing options...
discojmz Posted December 17, 2007 Author Share Posted December 17, 2007 right, ordering parts: belt ETC8550 tensioner ERR2530 Idler pulley ETC8560 front cover gasket ERR1195 dust seal ETC4154 camshaft front oil seal ERR6490 water pump gasket ERR388 hope this is correct. i figure while im in there i might as well do the lot also ordered inlet/exhaust manifold gasket and rocker gasket. have the rest of service parts. will do the manifolds just in case (cant see any obvious problem, and i think my clearances could do with setting) just noticed paddocks do a kit excluding the two seals. will do that. Quote Link to comment Share on other sites More sharing options...
Ivan Posted December 17, 2007 Share Posted December 17, 2007 On Les's recommendation I have just ordered the Bearmach kit from my local independant. They did not know about the kit but were very impressed with what you got. It was only about £70 as well. HTH Ivan Quote Link to comment Share on other sites More sharing options...
Les Henson Posted December 17, 2007 Share Posted December 17, 2007 You don't get any seals with the timing belt kit, so the cam/crank/dust cover seals will have to be bought seperately. Les. Quote Link to comment Share on other sites More sharing options...
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