Just been told my cambelt on my IS200 is sheered.
Could this be why the engine was making a rattling sound?
I've been told I need to change the following:
1 Cambelt
2 Pulleys
3 waterpump.
Are items 2 and three really necessary or are they trying to make money out of me.
Would the sheered cambelt have damaged the engine?
Thanks
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Get them to define 'sheered'. If it's snapped then the engine wouldn't run at all.
Unless it has snapped, the water pump is probably a try-on. Not the pulleys though, you normally change them (tensioner pulley(s)) at the same time as the belt.
If they are a main dealer, and the belt was still within it's prescribed life, then you have a case to get them to pay for the work.
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Probably a good idea to change the water pump. It may well be the cuase of the broken belt.
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Probably a good idea to change the water pump. It may well be the cuase of the broken belt.
Yep. Some cambelts are tensioned by moving the waterpump. The seal could easily be damaged in the process of moving it, and a week or so later a leak appears and the work has to be done all over again.
Having the pump changed now will save you extra labour costs later.
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didnt somebody (adam?) comment on your other thread that the waterpump is not driven by the cambelt on your engine ? Its on a seperate belt - but the oil pump is driven by the cambelt ?
mark
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You said in a recent post that there was a rattling from the engine that had been diagnosed as a water pump giving up. This could be the reason for the 'sheared' cambelt, so they would be right to change it along with the belt and tensioners (presume it is not totally snapped, but on its way otherwise you would probably need much more work!)
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They weren't 100% sure they they said it's likely the water pump but when they took a closer look they said the cam belt has been sheered.
Would I have to change the tensiones as weell?
The belt is £23 and the kit with thetensioners is £120.
cheers
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"Would I have to change the tensiones as weell?"
Churchill Dog - "Ohhh Yeesss"
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This thread doesn't make sense.
If the cambelt snapped then the engine would not run and would be damaged.
£23 sounds too cheap for a Lexus cambelt.
There is only one tensioner (IIRC).
I don't have this engine in front of me (!) but I'm sure that the cambelt drives the oil pump. It does not drive the waterpump; the waterpump is driven conventionally off a pulley. Are you sure they are not talking about the waterpump drive belt and its tensioner (a different thing altogether from the cambelt!)?
Anyway, it just doesn't add up. Are you using a Lexus dealer (or Toyota dealer) or an independent?
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I'm using an independent.
The car does have 90,000 with full service history but the last 3 were independent garages.
I've been quoted:
£180 inc VAT for labour
£130 inc VAT for the Cam belt Kit (I'm assuming it's the tensioners etc)
£95 inc VAT for the water pump which they insist should be changed.
I'be been told that the cam belt is being held by a thin piece of belt.
Does this sound about right?
I said change the water pump if it's faulty or you think it's looking ropey but they kept saying it must be changed.
They are going to start tomorrow so any advice is most appeciated.
Thanks
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Just been told my cambelt on my IS200 is sheered.
sarah davies -
cambelt? are you sure?
please please heed what aprilia tells you.
in my opinion, aprilia is not just a mechanic, nor just a technician, but a highly qualified respected engineer - to the extent that he should be rightfully called an ingenieur.
he gave you a partial answer to your previous thread on this subject. he asked further questions there, but you did not respond and instead started this new thread.
he has again given you the benefit of his technical expertise here. please listen to him and give him the info he is asking in return. he will then have something with which to try to answer your double cry for help.
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sarah davies - you must have replied a few minutes before while i was typing in my above comments.
anyhow, in the earlier thread,
www.honestjohn.co.uk/forum/post/index.htm?f=4&t=30...8
aprilia said:
"The water pump on your engine is driven by a regular drive belt and pulley (*not* by the cam drive belt) "
and
"The cam belt does however drive the oil pump, and this *would* be about a six hour repair job - are you sure they said water pump and not oil pump? "
you must get the details on this confusion between "oilpump plus cambelt" and "waterpump plus regular-drivebelt" sorted.
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Here, Here, Dalglish. Sarah, listen to Aprilia!
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To confirm:
1 It's the CAM belt that has sheered and if I start the car there is a possibility that it will ruin the engine.
2 The waterpump is what they want to change as well. (forget about the oil pump they definately said water pump)
3 As the water pump is connected some how to one of the belts they recommend changing it as well as it could have caused the damage to the CAM belt.
Does that help?
cheers
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It sounds like you need to take someone who understands enough with you to look at the car and give you an independant view of what needs to be done.
There's something about what you've reported them telling you that just doesn't add up.
--
I read often, only post occasionally
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To confirm: 1 It's the CAM belt that has sheered and if I start the car there is a possibility that it will ruin the engine. 2 The waterpump is what they want to change as well. (forget about the oil pump they definately said water pump) 3 As the water pump is connected some how to one of the belts they recommend changing it as well as it could have caused the damage to the CAM belt. Does that help? cheers
I can't see any interaction between the cambelt and the waterpump (i.e. the waterpump bearings going bad wouldn't affect the cambelt in any way).
It is, of course, possible that you have two independent problems; a faulty waterpump and a fraying cambelt.
In view of what the garage have told you I would be inclined not to start the engine. If the cambelt is in a 'delicate' state then you might wreck the engine.
The cambelt on the IS200 needs changing every 100k miles - so you are close to that, and it would be worth having it done anyway. I am doubtful that you are getting a genuine cambelt for £23 - check that out, and insist on a genuine Lexus cambelt (I would imagine it would cost £60+). You do need the tensioner changing too (I think there is just one). The IS200 cambelt is surprisingly easy to change (book labour of 2.5 hours).
They can also replace the belt that drives the waterpump, but this is a relatively inexpensive part and does not involve any additional labour (it has to be R&R'd anyway as part of the pump replacement).
The waterpump is about a 2 hour job - either way, the total job should not exceed 5 hours.
Diagnosis 'at a distance' is very difficult, so if in any doubt I would consider getting a 'second opinion' locally.
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Hi,
Just been told my cam belt has been sheered in half, although it's being replaced, the mechanic has no idea what caused it.
My worry is that the same could happen again, any idea as to what could be causing the sheering eg pulleys tensioners, waterpump etc
Any wild guesses as what could be causing it?
Thanks in advance
{moved to original thread as it's all related to the same question. DD}
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Sarah
is the the IS200? is this the same cambelt that was hanging on by a thread? or the replacement cam belt that replaced the cambelt that was hanging on by a thread?
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If you mean longitudinally cut (damage along the length of the belt so it is narrower than in should be) then this is usually due to:
Misalignment of pulleys or tensioner wheel.
Mispositioned belt cover rubbing on belt
Foreign object wedged against the belt.
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If you mean longitudinally cut (damage along the length of the belt so it is narrower than in should be) then this is usually due to: Misalignment of pulleys or tensioner wheel. Mispositioned belt cover rubbing on belt Foreign object wedged against the belt.
He showed me the belt and the edges had frayed. From your comment it looks like a mispositioned belt cover rubbing over the belt.
The new cambelt has been changed so shall I assume the cover is on correctlt and leave it at that?
Thanks
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Really your mechanic should sort this out - he has the car in front of him.
If it were me doing the job I would carefully check the condition of all the pulleys (and their bearings) and use a straight-edge to check everything is aligned.
If the belt has been rubbing on a cover then you can usually see marking on the inside of the cover and 'rubber dust' in the relevant area.
If its all back together now then I would leave it a week or two and then whip the cover off to check the belt is still undamaged.
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Sarah, reading the threads on your cambelt story, it seems that you have been very lucky so far. Do yourself a favour and do as Aprilia suggests, have it checked again,soon. If there is nothing wrong then you can motor on in confidence, if it is not right, you will know before any damage is done.
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