I've got an IS200 (90,000miles) and when I rev the car and the revs die down there's a rattling sound.
The car was recently serviced and the mechanic what's £100 tp open the engine to determin the problem.
Does anyone have an idea or even a guess as to what the problem could be?
Cheers
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Take it back to the garage, and tell them its only started rattling since they serviced it, and unless they have a look you'll take the matter further. It sounds though as if something hasn't been tightened back up properly, which only manifests itself at certain revs! Have someone look at the engine, and try and find the point where you can hear the rattle, perhaps its something obvious, like a loose air filter housing?
good luck
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I've got an IS200 (90,000miles) and when I rev the car and the revs die down there's a rattling sound. The car was recently serviced and the mechanic what's £100 tp open the engine to determin the problem. Does anyone have an idea or even a guess as to what the problem could be? Cheers
Can you give more information. Does it do it when the engine is cold, hot? Only after reving? Does it go away after a few moments of idling? Is it a light 'ticking' rattle or more of a 'knock'?
Need a lot more information to make a reasoned guess.
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Hi,
Thanks for the replies.
To answer your question when you start the car there is a rattling noise even if it's stationary.
As you rev the car and the revs die down there is a rattling sound. The sound is definately coming from the engine, about the middle of the engine and towards the top.
As the engine warms up it's slightly fainter but only marginally.
The other thing I've noticed is the noise gets worse if I put the car in a higher gear than I should. If I drop the gear by one then the noise is still there but fainter.
Any idea?
Thanking you in advance
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Have you only noticed this since it was serviced, and was the garage a lexus dealership, or an independant? Could be tappets, but theyre manual, not hydraulic on these, so perhaps they adjusted them incorrectly, when there was no need?
Maybe a poor quality oil was used when they changed it, one of the wrong viscosity, i.e. too thick. You really should complain to the garage though if you only noticed the rattle since it was serviced!
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The noise was there before the service. The garage wasn't lexus but a local one.
Forget who to blame what could be causing the noise?
Even a wild guess???
Could it be harming the engine?
I can live with the noise as long as it doesn't harm the engine.
Thanks
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Clearly this noise shouldn't be there, so it needs investigating.
It's no good saying you'll live with it as that could potentially prove quite expensive.
PP
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If the rattling seems to get faster and slower with the engines revs, then maybe tappets.
Have them checked/adjusted anyway, as these wont be checked as part of a routine service by an independant garage, and perhaps haven't been checked in a while, but make sure the garage knows these cars as they're not your bog standard Escort!
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Sounds like valve gear trouble. Almost impossible to diagnose without actually hearing it. You need a decent local garage to listen to it and possibly remove the valve cover to take a look.
I suspect that any repair won't be cheap....Lexus parts and service are VERY expensive.
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Think this engine is chain driven, if so timing chain tensioner is probably the cause as described.
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Sarah,
I had a similar problem a few years back and it turned out to be the catalyst. Apparently pieces of the platinum honeycomb can be broken (speed bumps etc...) and they melt into a ball and rattle in the chamber.
Unfortunately it was a brand new cat for me, hope it is not the same for you.
Carse.
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Does anyone know of a garage that could diagnose the prolem?
I live in Harrow north west london.
Help most appreciated.
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Sarah
If you intend to keep the car or if you are a Lexus fan (or both), you'll probably get good value from:
www.lexusownersclub.co.uk/
and perhaps a confident diagnosis, solution and suggestion of a local independent specialist.
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Just been told that the water pump is the cause of the rattle!!
Can this be right? what's a water pump got to do with a rattle in the engine?
Been told the part is £90 plus it will take 5 hours at £60 a hour!!
Is this about right?
Thanks in advance
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The water pump runs on bearings, if they are worn then the pump will rattle. It is a feasible diagnosis. It will pay to keep an eye on the coolant level. If the bearings are gone then the seals which keep the coolant in MAY start leaking as well.
The part cost seems a bit dear to me, but I am not familiar with Lexus.
If the pump is driven by the cam belt then the 5 hours doen't seem excessive. BUT I must stress that I don't know the engine layout on the car.
PS If the pump is driven by the cam belt, then the added cost of a new belt is worth condidering.
Hope this helps. No doubt a Lexus expert will be along soon with more info.
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Just been told that the water pump is the cause of the rattle!! Can this be right? what's a water pump got to do with a rattle in the engine? Been told the part is £90 plus it will take 5 hours at £60 a hour!! Is this about right? Thanks in advance
The water pump *could* be the cause of your rattle. However there is something wrong with the quote. The part price is probably about right, but the repair time for this job is well under three hours. The water pump on your engine is driven by a regular drive belt and pulley (*not* by the cam drive belt) - the repair is therefore relatively striaghtforward. They will probably charge you about £25 on top for fresh antifreeze when they refill the cooling system (which is fair enough)
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? Either way, the job needs to be done ASAP - but I would query the 5 hours labour if it is indeed the waterpump being replaced.
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Thanks, Aprilia, I thought someone would be along who knows the Lexus layout. As the water pump is driven by a "V" belt, I would have thought it would rattle more with worn bearings than if it was cam belt driven. 5 hours is a long time to change a belt unless the engine has to come out first!
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