Hi, My car has started making a grumbling noise at idle. This was first accompanied by a higher pitch "whine" a few weeks ago which I guessed was the water pump. So I changed that (which was completely knackered) together with the cam belt and Aux belt and assumed a fix. However a week later and the whine has gone, and the rumble has resurfaced.
The problem is only noticable with a warm engine and only when waiting in slow moving traffic, when coasting (there is a few hills on my route that traffic builds up on) I can't hear the grumble. Only when the car is stationary can it be heard. When the water pump was changed, I did inspect the other pulleys etc although I'll admit not very thoroughly.
I have had the car about 4 years now and I know everything has been serviced at the right times etc, it has about 120k on the clock.
Any ideas would be appreciated, personnally I'm stumped. Cheers.
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Oh yeah, forgot to mention its only really audible inside the car, from listening in the engine bay its very hard to hear.
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Crankshaft pulley failure is a favourite on these engines. The bonded metal/rubber TV damper breaks up. Check carefully - a rusty ring on the pulley and a few bits of metal are a giveaway.
659.
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It had a new pulley on about 30k ago, whenever the cam belt was last changed. And thinking about it I gave the pulley a real good clean as I managed to get coolant all over it :) did not notice any wear or rust though.
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is it possibly clutch related ? any difference in the noise when you dip the the clutch?
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No, the noise stays the same, I had a very careful listen this morning and the noise doesn't start until I come to a dead stop. If I rev the engine a touch it sounds fine but the noise returns at idle.
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Just a quick update, I've discovered that if i wiggle the gear stick with the clutch depressed when sat at lights I can sometimes make the noise go away for 1-2 secs, I have very little experience of gearboxes/clutchs so could this mean anything?
Turbo has picked up a funny whine at about 2800 revs now as well. Think this car could cost me a lot of money in the near future.
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Noises are very difficult to pinpoint on a forum like this - only a skilled technician listening to the car in real life will be able to advise.
I'm in Somerset and Peugeot trained if that helps.
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