| [ Total Views: 634 | Total Replies: 17 | Thread Id: 5732 ] |
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 kombikim
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| posted on April 28th, 2003 at 08:16 AM |
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scrape noise from 2L engine
when I started the car to warm it up this morning ( cold & very wet) I noticed a noise that I have heard come & go on other Kombi 1.8 & 2L
motors, my pessimistic outlook tells me it SOUNDS exactly like the fan/pulley wheel just touching against the alloy fan housing.
Am I on the right track? |
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Andy
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| posted on April 28th, 2003 at 09:27 AM |
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Hmmm... Hard one to diagnose Kim. Could it just be fan belt?
Often an easy way to check is remove the fan belt, start and see what happens as it eliminates a number of possible causes.
As you say, other that the Alt. and fan (on the crank) there's not much else on T4 to make a scraping sound.
Let us know how you go.
Andy
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kombikim
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| posted on April 28th, 2003 at 09:30 AM |
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I will, my one horrible thought is thrust bearing on crank |
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Andy
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| posted on April 28th, 2003 at 09:56 AM |
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Scary!!!!
Not that I've tried myself, but have been told it is possible to see if there's any end float by pushing/pulling on the fan.
I've only done this on the fly wheel of a motor that's out of the van, but it doesn't take much force.
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68AutoBug
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 posted on April 28th, 2003 at 12:07 PM |
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I HATE SCRAPING NOISES...
I hate em... I do ...
Fweemings OK but Scraping is OUT...
 :bounce:bounce:bounce:bounce
- [size=4]Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY--- [/size]
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pyr0
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| posted on April 28th, 2003 at 12:20 PM |
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i was in my mates kombi the otha day and we had a scraping noise but that was us going over a speed hump hehehe |
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 kombi_kid
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| posted on April 28th, 2003 at 02:35 PM |
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we had a type 3 motor that the fan would scrap and then come flying off!!!!! never found out what it was and its know a type 1 motor
cheers
rhys
it aint just cool its aircool'd
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kombikim
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| posted on April 28th, 2003 at 02:38 PM |
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luckily that "can't"happen to a type 4 cause the fan is bolted to the crank, I am going to check its tightness tonight though |
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KruizinKombi
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| posted on April 28th, 2003 at 05:22 PM |
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Kim, I've had the same problem with my kombi for months, only when the engine is cold. I did at first suspect bearings, but it doesn't
appear to have gotten any worse so I've stopped worrying about it. 
Kruizin Kol
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Menangler
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| posted on April 28th, 2003 at 06:11 PM |
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Kim, yours is an auto?, there won't be any bearing in the crank to worry about, make sure your fan is tight.
FAHRVERGNUGEN;
Description of a pleasurable sensation,
Experienced when a car and it's driver are in mutual harmony, A unique driving experience, Pleasure, Satisfaction,
A feeling experienced by Volkswagen Drivers.
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kombikim
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| posted on April 28th, 2003 at 08:25 PM |
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yes dave, tis an auto & I was thinking that thrust bearings in any engines with auto don't normally give any trouble, toothed fanbelt is
tight & the noise was not there tonight of course- stuff it!:cussing, used to come & go with the old 1800 & has only just started with
this one, 3500ks sounds LIKE pulley on fan is just touching fan housing, causing it to resonate |
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sand kombi
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| posted on April 29th, 2003 at 09:38 AM |
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I occassionally have a similar problem , just get a cake of soap ,with the motor running , rub it under the fan belt as it spins. It normally happens
after a few days of rain ??
MIKE.
VW'S DON'T LEAK OIL, THEY JUST LEAVE THEIR MARK !!!
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kombikim
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| posted on April 29th, 2003 at 11:17 AM |
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thanks Mike, will do, noise was not there this morning, I have a ten minute window to check everything each morning so that I don't come home to
find the vehicle mechanically terminated - if you know what I mean |
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KruizinKombi
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| posted on April 29th, 2003 at 05:59 PM |
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Soap UNDER the fan belt??? :o Won't that make the belt slip?
Kruizin Kol
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kombikim
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| posted on April 29th, 2003 at 06:07 PM |
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yep, I know it sounds crazy, but people have been doing it since v-belts were invented, I think it makes the belt "stick",
Shower gel should NOT to be used |
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Phil74Camper
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| posted on April 30th, 2003 at 05:45 PM |
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One other thing to check - Type 4 engines have those little dicky timing arcs that bolt on underneath the plastic mesh fan cover. They sit right near
the edge of the fan and can easily rub. Original ones are steel, aftermarket ones are plastic.
My plastic one used to rub on the edge of the fan, wearing curved grooves in the back. I tossed it away, found an old steel one and put that on. Steel
ones fit better.
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 vw54
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| posted on April 30th, 2003 at 06:06 PM |
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kOL
No SOAP on the fan belt is a common fix ... helps lubricate
Beck refresh my memory is it anything to do with hydraulic cam followers. ???
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kombikim
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| posted on April 30th, 2003 at 06:14 PM |
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Infuriating thing is there is no point in trying to fix the noise until it is there, so that I know what fixed it &
IT refuses to make a noise again, but next time I WILL be ready! and let you all know |
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kombikim
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| posted on May 6th, 2003 at 08:27 AM |
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HEY!! fixed, came out this morning, started up, & noise was back, loud as hell,
raced back in house, got bar of soap & raced back out, ignoring strange questioning glances from family - held bar of soap lightly against belt
for a coupla secs with engine running, & no more noise wil be in
trouble about skidmarks on soap when I get home
[Edited on 5-5-2003 by kombikim] |
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KOM123
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| posted on May 6th, 2003 at 10:04 AM |
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Glad it's fixed without breaking the bank
Don't worry about the soap, there are worse places to find skidmarks...
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Andy
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| posted on May 6th, 2003 at 11:48 AM |
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Good to see it was so simple.
So was the belt sliping? or is was there something on the belt or pully creating the noise?
:thumb
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kombikim
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| posted on May 6th, 2003 at 12:10 PM |
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really dont know, it is a tight toothed belt in as new condition, before the soap I wet my finger & put the finger on the running belt for a sec
& noise went away for probably 5 secs, I did this a few times & when the noise came back it sounded like scraping with minor bearing rattle
all I can think of is that the Alloy fan/metal pulley are resonating & coating the belt dampens this |
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