v1xz
Part of things
i'm retro
Posts: 661
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Can anyone help me identify the noise and solution? |
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1998 Merc E240 1997 BMW 728i 1998 VW Passat 2000 Kangoo 1999 Transit LWB 1999 Matiz SE 2001 Clio 1998 Golf GTi 1996 Ford Luton.... Retired.... Want a Motorbike... Got one... Yamaha WR125X... Missed RR sooo much... 1983 Porsche 944 1997 Celica 2000 Clio 1993 MR2 1992 MR2T 1989 325i Touring
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Mar 16, 2012 13:40:31 GMT
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You're crazy.  As best as I can see from that mental video, it is either a failed water pump or a failed alternator or a failed belt-tension jockey wheel or a failed viscus clutch on the cooling fan. The normal way to work out which one has broken is to get a piece of wood or a jack handle or something long and solid... no, not that  ...and press it against each component with your ear on the other end. The noise will transmit along the tool up to your ear. When you've got the stick pressed agains the failed item the noise comming up the shaft into your ear hole will be unmistakable. TAKE CARE when checking the alternator that you don't short-out the high amperage terminals on the back. On everything else make sure you don't obstruct any of the moving pulleys or belts as you may do yourself an injury. When you find the broken component simply replace with a good working replacement. Preferably new. |
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v1xz
Part of things
i'm retro
Posts: 661
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Mar 16, 2012 16:04:46 GMT
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Crazy!
Took me ages to settle damn phone so I could run around and rev the engine. Obviously when I rev the sound stops.
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1998 Merc E240 1997 BMW 728i 1998 VW Passat 2000 Kangoo 1999 Transit LWB 1999 Matiz SE 2001 Clio 1998 Golf GTi 1996 Ford Luton.... Retired.... Want a Motorbike... Got one... Yamaha WR125X... Missed RR sooo much... 1983 Porsche 944 1997 Celica 2000 Clio 1993 MR2 1992 MR2T 1989 325i Touring
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Mar 16, 2012 16:11:17 GMT
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Not obvious. But if you rev the engine and it stops that rules out the alternator and a belt jockey/tension wheel. It could still be the water pump or the viscus coupling on the cooling fan. If I had to bet on one or the other then I'd say cooling fan
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v1xz
Part of things
i'm retro
Posts: 661
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Mar 16, 2012 19:17:37 GMT
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I was hoping it was that too.
Is it easy enough to take off?
I've bought a new fan housing with the water expansion tank attached.
If it is the cooling fan, would that mean my vehicle is no cooling enough as it should be?
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1998 Merc E240 1997 BMW 728i 1998 VW Passat 2000 Kangoo 1999 Transit LWB 1999 Matiz SE 2001 Clio 1998 Golf GTi 1996 Ford Luton.... Retired.... Want a Motorbike... Got one... Yamaha WR125X... Missed RR sooo much... 1983 Porsche 944 1997 Celica 2000 Clio 1993 MR2 1992 MR2T 1989 325i Touring
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v1xz
Part of things
i'm retro
Posts: 661
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Mar 16, 2012 21:48:06 GMT
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1998 Merc E240 1997 BMW 728i 1998 VW Passat 2000 Kangoo 1999 Transit LWB 1999 Matiz SE 2001 Clio 1998 Golf GTi 1996 Ford Luton.... Retired.... Want a Motorbike... Got one... Yamaha WR125X... Missed RR sooo much... 1983 Porsche 944 1997 Celica 2000 Clio 1993 MR2 1992 MR2T 1989 325i Touring
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Often these things have a reverse thread holding the viscus coupling to the crankshaft (or whatever it is attached to) so look out for the reverse thread. I've not done one on a 728i before so can't 100% confirm which way to try to open it... but just bear in mind that it might be clockwise to undo.
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