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| Faint Whine After Water Pump Change.. | |
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| Tweet Topic Started: Tue Aug 4, 2009 10:59 pm (1,352 Views) | |
| -V- | Tue Aug 4, 2009 10:59 pm Post #1 |
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The Hamster
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Hey ya'll! So Mr. Kentronix was a diamond this evening and helped change the water pump out for me. Turned out to be even tricker than i had suspected so i am real grateful - thanks again dude! Really really appreciate it! ![]() Once the new water pump was in and everything was put back together, we started to car to see how it got on. All seemed fine although there was a very faint high-pithced whine/whirring noise (not the squeaking/squealing noise you get when a water pump has buggered bearings). When we loosened the belt slightly it appeared to have reduced in volume (or it could have just been out ears!) Unfortunately, the marker which indicates the exact position of where the belt should be is broken! So we were tightening it according to feel. I.e. not too tight and not too loose. Could this whining be an indication that the belt is still too tight (just afraid of it being too loose!) or is it usual for a new water pump to make this sort of noise as soon as it is in place? If anyone could throw some light on this, that would be great! Cheers guys! ![]() |
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| Richy190E | Wed Aug 5, 2009 12:42 am Post #2 |
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bubble bubble
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Overtightened belts do whine. Best sort the tensioner out before it bugger5 your alternator and new waterpump bearings matey. |
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| kentronix | Wed Aug 5, 2009 12:50 am Post #3 |
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I'm only really here for the Kitchens
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Any idea how much slack there should be on the m102 richy ? We did have it quite slack, after hearing the noise we slackened it off step by step until we didnt want to go slacker and although it may have got quieter (hard to tell as its only just audible) it didnt stop. it may well be a bearing was making the noise before but couldnt be heard over the noise of the water pump, although I dont know if it always made the noise. btw, no worries -V-, happy to help, next time I want someone to put my tools back in the wrong order I will give you a call, its a skill you have
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| balamb37 | Wed Aug 5, 2009 9:31 am Post #4 |
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Grumpy Old Grampa with Dog
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If the belt is right it should twist at the top longest free part about 90 degrees with ease. But I suspect that your tensioner is on its way out, but it should last a while yet as it can get real noisy, and it obviously is not throwing fan belts yet. |
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| -V- | Wed Aug 5, 2009 10:48 am Post #5 |
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The Hamster
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Tensioner on it's way out??? Really?? ![]() It's only just occured since removing and refitting the belt which made us think that it could be that the belt may be too tight. As Kenny said, after slacking it - the noise seemed to have reduced slightly in volume which made us think that the belt still might be too tight. I'll check to see if the long part can twist 90 degrees with ease, though from what i can remember - i dont think it can. Problem being that we didn't want the belt to be TOO loose to the point that it may fling off! |
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| Uk Merc Man | Wed Aug 5, 2009 11:47 am Post #6 |
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190e Leg-End
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sure the whine isn't coming from you? personally, I've always set my drive belts with about an inch or so of deflection....quite tight. if you hold the handle of a screwdriver to your ear and touch he tip on the various areas around the water pump / pulley / etc you may be able to better locate the noise......give us a bell if you need any help/guidance/advice/word of encouragment/tips on not being so mechanically lame - I assume you checked the valve caps while you had a pro there?
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| kentronix | Wed Aug 5, 2009 1:52 pm Post #7 |
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Oh my gosh, I just got called a pro !! I must ring my mum and tell her she will be so proud. I would say there was an inch to inch and a half deflection at the longest run part above the tensioner. |
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| Uk Merc Man | Wed Aug 5, 2009 4:07 pm Post #8 |
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190e Leg-End
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this is in comparision to V who once texted me to ask if he would lose air out of his trye if his valve caps were missing! as for the deflection, sounds ok to me!
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| balamb37 | Wed Aug 5, 2009 4:31 pm Post #9 |
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Grumpy Old Grampa with Dog
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Yes the 'deflection' sounds Ok, but as regards the 'tensioner roll' don't forget you have fitted a new belt and it will be a bit stronger than the old one thus putting a bit more pressure on the tensioner roll, just check that the 'T roll' is running true and and not running lopsided it should be Ok for a while. |
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| kentronix | Wed Aug 5, 2009 5:33 pm Post #10 |
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We refitted the old belt, we only changed the water pump so no reason to change the belt as well is there ? Not sure what you mean by T roll, is that the roller that pushes on the backside of the belt ? Definately not lopsided, my brothers is so its something I always check. Good point Uk Merc Man, I will ring my mum again and let her down gently. I just hope she hasnt started baking the cake yet
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| Neil | Wed Aug 5, 2009 7:50 pm Post #11 |
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Newbie
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Kenny at Brooklands, yesterday
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| balamb37 | Wed Aug 5, 2009 8:12 pm Post #12 |
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Grumpy Old Grampa with Dog
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Sorry about that Ken I thought I had read that you had fitted a new belt, And if it got contaminated with coolant it would have been advisable to change it. 'T roll' your right the tensioner one that rolls behind the belt, they tend to start singing when they're worn. The other thing that comes to mind you did put anti-freeze back in didn't you ? as if you didn't that could cause a slight squeeling of the pump as you know anti-freeze also has a lubricating function too. And another thing is ,When the water pump 'went' I take it there was coolant all over the front of the engine, so it's advisable to squirt a little thin oil betwen all moving parts, that is front and back of all pullies, taking care not to get any on the belt, I had that myself and it cleared all the other wet stuff out and stopped squeeling. Edited by balamb37, Wed Aug 5, 2009 8:15 pm.
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| kentronix | Wed Aug 5, 2009 9:00 pm Post #13 |
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The belt looked pretty good so I didnt suggest changing it. It had probably got coolant on it when the pump was leaking in use although in actual fact we were quite tidy when we swapped so it wouldnt have got much if any at that stage. Good point about oiling, anything below or close to the water pump got wet when the pump was removed. Yep, its got antifreeze in, dayglo radioactive stuff !! From what you say I think it could well be coolant on the T roll or one of the pulleys, or alternator perhaps. |
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| MadMike | Wed Aug 5, 2009 9:05 pm Post #14 |
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Therapy Needed
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Hmmm. Begining to think that Barrie is a bit of an expert on such matters. Nice one, Barrie. Mike. |
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| balamb37 | Wed Aug 5, 2009 10:52 pm Post #15 |
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Grumpy Old Grampa with Dog
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Just before I go to bed I've read through the posts again, You said a 'wirring' noise and it got less by slackening the belt. That still sounds to me like the bearing in the 'tensioner roll' is on it's way, but it is most likely to be 'Coolant contamination' from when the engine was running before you changed the WaPu, (pullies, belt etc) Just as a matter of interest, when the engine is running and you switch the headlights on does the noise get louder when the alternator has load on it ? or does it change its tone ? |
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| kentronix | Wed Aug 5, 2009 11:04 pm Post #16 |
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-V- will have to answer that. A bit of background, the pump was leaking out of the drain hose at the bottom so am not sure how much got sprayed around, it may have been a neatish drip from the pipe. Its hard to tell if it gets quieter, its so feint in the first place. You have to imagine one of those "is it still making it ?, not sure, tilt your head, is that it, or just me ears" In the end we decided we thought it got quieter, but we arent 100% sure. |
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| -V- | Thu Aug 6, 2009 10:28 am Post #17 |
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The Hamster
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Thanks for all the replies people - except for the homo comments from ukmercman, but I wouldn't expect anything less from a "man" who uses hair-straighteners! ![]() Anywho, i've been crazy busy over the last 24 hours and only have about 2 mins spare time so i'll make this quick. Have used the car on very short journeys since the new water pump was fitted and it seems that the "faint whine" has disappeared. I left the car running for a while yesterday before driving it and there was no whine. Checked it again this morning and no whine. No idea what it could've been - wonder if it was that it was just a new pump or whether there was something on the belt itself at the time? There was no coolant on the front part of the engine as all the coolant was escaping from the 'coolant escape pipe' behind the alternator. I will try running the engine again tomorrow with the headlights on - are we assuming that if the noise reappears it's going to be something else? I'm hoping that it was just a "dry" waterpump and has since lubriacated itself with the anti-freeze properly circulating. ![]() |
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| balamb37 | Thu Aug 6, 2009 10:38 am Post #18 |
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Grumpy Old Grampa with Dog
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I shouldn't worry about it, you're probably right, just the new WaPu running itself-in, let us know if it comes back and we'll start again. |
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| -V- | Thu Aug 6, 2009 10:57 am Post #19 |
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The Hamster
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Thanks mate, really appreciate your input on this! I'll keep an eye/ear on it though and here's hoping that it was just the new water pump setting in. ![]() P.S. Forgot to mention earlier - the long part of the belt does twist to 90 degrees with ease. Edited by -V-, Thu Aug 6, 2009 10:57 am.
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| kentronix | Thu Aug 6, 2009 1:02 pm Post #20 |
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-V- dont forget the hose clip !!! |
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| -V- | Fri Aug 7, 2009 1:11 am Post #21 |
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The Hamster
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I bought one yesterday dude and will drop it round in the morning. I'll just PM you instead, it might make life easier!
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| merc190uk | Fri Aug 7, 2009 9:41 pm Post #22 |
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The Godfather
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Hello bud late replying after reading all this post about how you have changed the pump and the isuues with noise and still retaining the old belt and with the possable load implications from the alternator being under a heavy current i can safley say its down to lack of retro pictures being uploaded this puts pressure on the whole system and it just keeps whining
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| kentronix | Fri Aug 7, 2009 10:38 pm Post #23 |
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I did notice a lack of retro pictures but assumed he had relocated them elsewhere in the engine bay. I considered the fact the leaking water may have damaged the retro pictures but there was no evidence of this, clearly -V- needs to ensure his retro pictures are fully uploaded and shared before any more diagnosis can continue. Lack of retro pictures combined with coolant on the belt and missing valve caps is one of the most likely causes of an atomic wedgie and/or chinese burns. Careful -V-, things can escalate very quickly if your retro pictures arent in place. |
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| merc190uk | Fri Aug 7, 2009 11:03 pm Post #24 |
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The Godfather
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yes Kenny your right as usual these things can snowball out of controll one moment its a water pump next thing the bolts have worked lose from your retro pictures upload and we end up with bits all over the place ! i am sure V wants to keep his retro pictures running smoothly and with proper maintanence and a little help from retro pictures we can keep it running tip top as for the dust caps, odear owned once again v i am willing to help him as i am sure many others are with this |
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| kentronix | Fri Aug 7, 2009 11:53 pm Post #25 |
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| merc190uk | Sat Aug 8, 2009 11:44 pm Post #26 |
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The Godfather
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is v the new stu !
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personally, I've always set my drive belts with about an inch or so of deflection....quite tight. if you hold the handle of a screwdriver to your ear and touch he tip on the various areas around the water pump / pulley / etc you may be able to better locate the noise......give us a bell if you need any help/guidance/advice/word of encouragment/tips on not being so mechanically lame - I assume you checked the valve caps while you had a pro there?
9:18 AM Jul 11