D16GER

Hi guys, as I posted before, I have a little rattle/knock sound at the front of the engine.

Original post

Now, having really tried to locate the problem, I think I have it narrowed down, but I need some help to...

A - Identify if the rattle could be coming from where I think

B - Identify what may be causing it, a bearing or whatever

Here are a few pictures, I have circled the area I think the rattle is coming from. From what I can tell it sounds a bit like a damaged bearing would sound when it is turning. And I think it may be something to do with the wheel that the upper belt turns on. (Technical description it aint, but I know **** all about engines )

I would be very grateful for some help in identifying the problem.....

Here are the pics....

DeanF

iTrader: (1)

From the first picture , I would put my money on the AirCon Pump clutch assembly. If you turn the Aircon on , does the noise get less ????
If so squirt some aerosol white grease in the outer orbital ring/pulley, with the aircon off. It will be obvious what i mean if you watch with engine running & aircon off Etc. Noise should lesson for a while with the grease squirted in .

Dean

RON

Although it's not the simplest thing to do, i'd remove the aircon belt and see if the noise stops.......

David MY99

just cut the belt, a new one cost about 15 pound

D16GER

Thanks for the replies. The noise is no different with aircon on unfortunately.

I may see about getting the belt removed to see if it helps.

I am still fairly sure that is where the noise is although I would swear it sounds 'bearing like'.

RON

If it's the same with the air con on or off, then it may not be that thats making the noise, with the air con off, the pully still goes around, but the actual air con unit doesn't, the pulley is two bits with some sort of magnetic switch which connects them, with the air con on, the pulley becomes one lump and therefore the aircon unit goes round, therefore two different sets of bearings are at work with it on or off, so, with that in mind, maybe the alternator needs looking at..??..... try switching things like the lights on and see if it chages the noise, in order to remove the air con belt, first you need to remove the alternator belt, might be worth running the engine with the one belt off first, just to see if the noise is still there..... if it's not, problem sorted, if it is, remove the second belt and try again..... there's a small chance it could be the idler bearing that the belt is tensioned up on aswell...??

D16GER

Thanks for the advice Ron, I will look into it tomorrow and update when I can find out some more.

David MY99

i think it's the belt tensioner of the airco. So if your sure it's comming from that area remove the beltand see if that solve's it.

Other thing you can try is to spray the area with some wd40 and see what happens