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piote25mx

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Posted
since my trip to scotland i have noticed a higher level of cab noise. it dosnt seem to be the engine (peogeot 2.5 t diesel) but from the engine space,it is a constant rumble type noise,i suspect either the alternator or the water pump.any expert out there that can help.(ps. there is still bags of power from the engine,starts first time ,doesnt smoke ect) dave *-) :-(
Posted

Its virtually impossible to diagnose a noise without hearing it. If you suspect water pump or alternator remove their respective drive belts and feel for any play in their bearings. water pump bearing failure is usually accompanied by a water leak so I'd suggest you go for the alternator first if there's no water leak apparent.

 

In edit: As you mention it as being a rumble from the front have you checked for wheel bearing play?

D.

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Posted
Could be something as simple as a displaced bulk head grommet as they can let an amazing amount of noise into the cab?
Posted

Could be tyre noise as the the tread wears, you can get differerent frequencies of rumble. Maybe loose wheel trims, if you have steel wheels.

 

I supose the test is does rumble increase with speed / engine revs / or types of road service.

 

Rgds

 

 

Posted

 

 

If its a rumble its possibly the wheel bearings, jack up wheel and turn by hand and listen.

By this you may find the answer which could be of 3 or 4 answers.

1. Rumble as to wheel bearing.

2. Brake pads which are seized in callipher and rubbing continuously. Just had this on my car. Sort out seizure and recheck by turning wheel again.

3. Wheel nuts loose.

4. Drive shaft noise but normally on turning corners or slow manouvers.

 

Water pumps when they wear they leak. Some even shear off their impellors and overheat.

Engine checks; as in when was your cambelt renewed. Do you know that when the belt follower wheels get old like us old gits, they start to moan and the belt whips as it becomes looser. Like the Vauxhalls and others with plastic wheels they just disintegrate. So renew as scheduled.

Power steering pumps can also moan but rule that out.

Alternators usually just stop giving an output, but belts do become loose and make like screeching noises as the belt slips.

 

Good Luck with above,

Gordon.

 

 

 

 

Posted

Dave I put the post in to illustrate the noises that come from Engines, there is more but I'll not give you any more idea's due to your un-Expert reply.

However quite a few have found my words of interest and are checking them out.

Gordon...

Posted
gordonaldson - 2007-10-27 7:51 PM

 

Dave I put the post in to illustrate the noises that come from Engines, there is more but I'll not give you any more idea's due to your un-Expert reply.

However quite a few have found my words of interest and are checking them out.

Gordon...

 

Hi Gordon -

 

Sorry but I'm confused now.

 

You listed a number of noises saying they come from the engine, but - unless I'm missing something - the noises from several of the possible faults that you listed wouldn't eminate from the engine.

 

Many are instead wheel-related and would thus any assoicated noise would surely come from the wheels not the engine - and would anyway only present when the vehicle was moving and thus the road wheels were turning, and/or the hydraulic brakes were applied.

 

That's my guess anyway.

 

Cheers,

 

Bruce.

 

 

 

Posted

The story goes I've just had the cambelt and wheels done on my car, as I reconned it was due. Well not by Renault as they say 70,000 mls, mine was at 65,000.

Now there was a low moan and a whipping noise from the belt and low and behold its now gone after belt and wheel surgery.

As too engine noises and wheel/braking/drive shaft noises many people can't tell the differance, well they are in the same area at front anyway.

At the rear a rumble/ moan would be classed as a bearing/diff problem.

Or as I've found many times its just the brake pads seized in the carrier and rubbing continuously.

Easy job here, yes for me as I do my own maintenance. But what would a garage trouble shoot it as; new discs and pads required or wheel bearing. More money here you see and it does happen.

Motorhomers tend to be classed as a soft touch as they tend to be older and don't realise it .

So you see when a water pump is put down for a noise from the engine it makes me wonder. Usually it leaks first as of course Dave said as well.

I'm not sure at this moment if the cam belt runs the pump like in some engines and when it does go so do the camshafts. But its just a 2.5td so may be just a "V" belt.

A lot of you guys and gals out there will think I'm talking Isack Newtons thery's and as Blackadder says a load of DRIBBLE.

Or some will be saying happened to me, heard that, better check that.

 

Good luck,

Whats the weather like in Southern Spain,

 

Gordon...

 

PS. Anyone into 47's or 37's or Hogwarts Express(Altonhall), Scots Guardsman. No awell bye.

 

 

 

 

 

 

 

Posted
gordonaldson - 2007-10-27 9:35 PM

 

The story goes I've just had the cambelt and wheels done on my car, as I reconned it was due. Well not by Renault as they say 70,000 mls, mine was at 65,000.

Now there was a low moan and a whipping noise from the belt and low and behold its now gone after belt and wheel surgery.

As too engine noises and wheel/braking/drive shaft noises many people can't tell the differance, well they are in the same area at front anyway.

At the rear a rumble/ moan would be classed as a bearing/diff problem.

Or as I've found many times its just the brake pads seized in the carrier and rubbing continuously.

Easy job here, yes for me as I do my own maintenance. But what would a garage trouble shoot it as; new discs and pads required or wheel bearing. More money here you see and it does happen.

Motorhomers tend to be classed as a soft touch as they tend to be older and don't realise it .

So you see when a water pump is put down for a noise from the engine it makes me wonder. Usually it leaks first as of course Dave said as well.

I'm not sure at this moment if the cam belt runs the pump like in some engines and when it does go so do the camshafts. But its just a 2.5td so may be just a "V" belt.

A lot of you guys and gals out there will think I'm talking Isack Newtons thery's and as Blackadder says a load of DRIBBLE.

Or some will be saying happened to me, heard that, better check that.

 

Good luck,

Whats the weather like in Southern Spain,

 

Gordon...

 

PS. Anyone into 47's or 37's or Hogwarts Express(Altonhall), Scots Guardsman. No awell bye.

 

 

 

 

 

 

whatever your taking let me know, you seem well chilled
Posted

Well Gordon, I'll only reply to you this once. My post to you was made in a light hearted way (hence the smiley at the end(lol) ). Your response to me can only, in my view, be taken as downright rude. You quote that many forum users are perusing your respone but how can you possibly tell that they've logged in to this thread just to read your response? And as for being "un-Expert" what the hell does that mean? I've never encountered such a phrase, inexpert perhaps or even inexperienced but "un-Expert" never. By the way it is the forum operating software that allocates titles such as "Expert" etc to users not we ourselves who choose them.

 

Having said that I suppose that as I've been in the motor industry and related industries for 30 years, been a technical consultant for MMM for over ten years and written a monthly technical column, including a question and answer session, in a national motorhome magazine for over four years there are probably those amongst us who might just think I qualify for the title.

 

Live long and prosper, D.

 

P.S. I now run my own business dealing with mainly motorhome equipment.

Posted

Talking of engine rattles, on my 2.0 JTD it had an interesting one. Most annoying rattle which turned out to be an extension piece welded to the oil stick tube, which a plate is bolted to with a couple of clips for routing cables. It had sheared off through fatique from vibration and had slipped down the cables and was rattling against the starter motor. Anyone else had this happen? The offending broken extension/bracket has been disgarded by me as useless.

Jon.

Posted
Mel B - 2007-10-28 7:04 PM

 

Dave

 

I thought the title 'expert' had been invented on here just for you my sweet! :-D

 

Hello Darlin', where ya bin 'idin' then? Haven't seen anything from you for a while, you bin away in that there motrome thingy agin?

 

D.

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