Disaster - pump? knock knock knock

[mcgon1979]

Damn it... I was driving home and revved up to 7.5k rpm a couple of times under acceleration but that was it I was not doing prolonged heavy driving. I came to a stop in Lidl a few minutes later and heard knock knock knock knock like a knocking. A heavy dull knocking. oooppps. Whats that I'm thinking. I tap the accelerater and the knocking speed increases so I know its drive train related and am really sh1tting it now. I start driving again to pull in as I am in the middle of the car park. Then I hear a horrible grinding type noise and then some more horrible noises. I'm freaked. Turn of engine.

I get under car and notice that one of the belts is about 10% shredded. It's not the alternator belt, its the other one thats visible. Is it water pump and/or oil pump? This belt drives 2 wheels. I'm nearly sure one is the oil pump, the other wheel must be water pump? I'm guessing one of the pumps seized (the knocking noise) then the belt was basically shredded by the non turning wheel? Does this sound right?
I let the engine cool and nursed the 2km home. I was happy it was nothing more serious. When I get home I look under car. Both pump wheels are spinning? The knocking seems to be gone at idle, but it was very bad on drive home. I'm not sure which pump is gone is the problem? I may have to buy an alternate belt aswell as I think the flailing water/oil pump belt damaged it a bit (it looks a bit hairy on the side)... Total disaster. I have no way to get to work now, plus it will take minimum 2 days to get the pump I need from UK. I also need to get the car transported to my garage/mechanic in balbriggan (from Tyrrelstown). Anyone any advice? My main question is any idea which pump is likley to have stopped and hence shredded 10% of the belt. both wheels that are driven off this belt seem to be moving fine now, and the belt is spinning fine too although its shredded and the shredded bit hits everything as it rotates... not good.
I don't feel so good, but I know it could have been worse than a pump or belt issue. I really thought my engine had packed in

[DirtyLopez]

that was skary story
well... no ideas what happend but one thing is obvious... you should start to write some articles to some car magazins
I`m in pain with you btw

[gas-man]

Tell me summit.. is ya aircon working and did you used to get a whining noise when she is running ???

It could be the aircon but im no expert under the bay im afraid...

Why not post it up aswell on the UK OC

[CJ]

Assuming the alternator belt is intact, I assume its the power steering belt that snapped? You didn't mention if PS is affected. Did you notice increased water temps?

CJ

[mcgon1979]

Assuming the alternator belt is intact, I assume its the power steering belt that snapped? You didn't mention if PS is affected. Did you notice increased water temps?

CJ

hey CJ,

Yeah its not the alternator or PS belt...
I got my mate Glen the mechanic to look at it today. It's the belt that drives the water pump and the air con assembly. Anyway, he had agood look at it. neither the water pump or the air con is seized? both spinning fine. the belt however has on of the ribs (5 ribbed belt) totally shredded.
Glen cut off the shredded piece and the car sounds fine now. I even drove it a few miles to see if the knocking came back. nothing, not a tap out of it. sounds 100%? Glen said that the knocking was the shredded belt tapping off the air con pipe which is quite a hard pipe.
He reckons that maybe a stone or else the tensioner caused the belt to shred itself.. he says the knocking was defo the belt though. He said if it was the water pump or the air con that seized it would not be working now and both are working fine. My air con is fine and the temps all look normal. I think glen has probably heard a few knocking belts in his time and said it was 100% the belt I heard knocking. So it looks like it might just be a new belt (touches wood). I'll take to his garage tomorrow and strip it off and see if the tensioner and the other wheels all look ok.
fingers crossed.

[gas-man]

Well done mate and good news

[AL]

correct me if im wrong, but isnt the PS and Air Con belt one and the same
your problem most likely is the clutch mechanism in the Air Con pulley, easy enough to remove and if the coil is rusted it needs renewing, chek all your tensioner pulleys too, bearing might be a bit rough

[gas-man]

I just had her in for a full service and was told then that it needs summit but cant remember what he said it was except it would cost about £200 to put right

Del

[mcgon1979]

checked it all out. Air con mechanism is 100% and wasn;t in use at time of belt shredding. I took of both the alternator belt, and the water/aircon belt. Both were damaged... one rib wasm issing entirely off the aircon/water belt.
Examined all wheels and tensioners and everything appears 100%. It seems a stone or something shredded the belt. Apparently this can happen if it hops up and gets jammed between tensioner etc. Anyways replaced both belts and knocking is gone. No grinding, knocking or any adverse sounds and all seems good. I think I have had a lucky escape (€€€) this time. My mechanic says its 100 fine now and it does sound grand but still get the shakes thinking of that noise it made... Urghhh knock knock knock GRIND crunch grind knock. urghh... nasty thing when a belt shreds itself and whips off stuff i nthe engine bay.

[Sebastian]

lucky
where did u bought the belts from and how much was the whole thing ?

[mcgon1979]

lucky
where did u bought the belts from and how much was the whole thing ?

The first belts came as part of the camkill kit (timing belt + belts kit).
The ones I put on yesterday came from a local motor factors in lusk. they did not have the exact belts but the ones I got wer eonly 2mm longer so the tensioner took up the difference. whole thing cost 30 euros.

[gas-man]

Ive just had a full service and all belts and tensioner and pullies so it aint that for me... mines def the air con which whines

[mcgon1979]

Car going grand since I changed belts. I'm still abit paranoid though and keeping a good ear on it for any suspect sounds.
A quick question about mivec. If it doesn't kick in, the car won't rev about 6k right? Car is fine and revs to 8k as normal but I think it sounds slightly louder and I don't notice the "kick" as much at 6.5k.
Most likley this is in my head though as I always get freaked when anything gets done to my car. You should have seen me after the timing belt was done. LOL. I find that though, sometimes you can notice the mivec at 6500 quite easily. Other times you don't notice it as obviously. Still its not a turbo so what do you expect.
I know I cannot be the only person that is like this about his car. especially on here

[Muad_dib77]

If the car is cold you'll only be able to rev it up to about 6k.. but you shouldn't be reving a cold car that hard anyway..tut-tut!

I'm guessing you've probably gotten numb and don't feel the mivec kicking in the same way as when you first bought it.. to learn to appreciate it again simply drive like a taxi man for 20-30mins.. (Ie. below 3k rpm in ANY gear!)..once you're fit to hurt your self or anybody in your surroundings..drop it into 2nd and floor it..(assuming you're on your private track!)

SPEEDING IS BAD, M'KAY!

[mcgon1979]

If the car is cold you'll only be able to rev it up to about 6k.. but you shouldn't be reving a cold car that hard anyway..tut-tut!

I'm guessing you've probably gotten numb and don't feel the mivec kicking in the same way as when you first bought it.. to learn to appreciate it again simply drive like a taxi man for 20-30mins.. (Ie. below 3k rpm in ANY gear!)..once you're fit to hurt your self or anybody in your surroundings..drop it into 2nd and floor it..(assuming you're on your private track!)

SPEEDING IS BAD, M'KAY!

LMAO!!!! Thats cheered me right up Maud. haha. No, I only ever noticed the car stop revving at 6k once! never ever drive it above 3 or 4k until its warm. I'm suffering from "Mivec numbing". Thanks for the solution.