From: michael9@nadine.cs.mun.ca (Michael Sullivan)
Subject: Re: Weird behavior on 85 Jetta
Organization: CS Dept., Memorial University of Newfoundland
Date: Sun, 24 Jan 1993 20:27:48 GMT

kokerj@jec316.its.rpi.edu (James Matthew Kokernak) writes:

>In article <1993Jan23.215436.9823@cs.mun.ca>, michael9@nadine.cs.mun.ca (Michael Sullivan) writes:
>|> finnegan@invader.NoSubdomain.NoDomain (Kenneth Finnegan) writes:
>|> 
>|> >In article <sgupta.727717772@pint.ecn.purdue.edu>, sgupta@pint.ecn.purdue.edu (Sameer Gupta) writes:
>|> >|> 
>|> >|> I noticed something very weird and want to see if someone can give me an
>|> >|> explanation as to what happened.  The car is a straight 8 valve jetta with
>|> >|> a 5 spd if it makes any difference.
>|> >|> ..to get some gas, which also gave the engine a chance to
>|> >|> cool down a bit.  I cannot figure out why the temp started to rise.  It had
>|> >|> been steady for the past 5 hours and 45 minutes.  Could it be due to low gas ?
>|> >|> Also, I heard a slight humming sound coming from the rear.  I am pretty sure
>|> >|> that it was the fuel pump.  Is it going bad or is it normal to be able to hear
>|> >|> it after it has been driven straight for about 6 hours ?

  Mine hums all the time.  But it also hisses when I am low on gas.  If it
is going to fail soon, I don't know.

>|> 
>|> >It sounds as if your fuel transfer pump is going.  When mine was failing,
>|> >Kenneth
>|> 
>|>   Sorry!!  It is perfectly normal for the water tempture to rise after heavy
>|> driving and then stopping. Think about it.  The only way the engine can cool
>|> off is when the water pump is pumping water about the cooling system.  If
>|> the car is stopped, the water just sits there, and gets hotter and hotter.

>In volkswagens, all of the gauges relax when the car is shut off, so you would 
>not see the increase when the car was not running...

  If the key turned to just before the starting point, all the guages come 
on-line.  This is the state I was refering to.  When I first heard of this
effect, I had to see for myself, and there it was.

>I believe that the original 
>poster saw the temperature rise while he was driving. If indeed something has

  True enough.  My mistake.  


>|>   I believe that the VW manual recommends that if you see this condition, you
>|> should sit and idle the engine at higher then idle rpm.

>This will heat your car up faster until the electric fan comes on.
> 

  All I know is that it works, fan or no fan.  With the car idling, tempture
rises.  Bring the revs up a little and down the tempture goes.  Ditto on other
cars I have driven in the same circumstances (hot, hilly, highways).

>|>   This has happened to me several times when doing a lot of highway driving,
>|> and would pull off to grap a photo of something.  Sure enough, I could watch
>|> the temp gauge rise.
>|> 
>|>   BTW, this is also way it is recommened that after really hot and heavy 
>|> driving, you let the car cool down before turning it off.  Especially important
>|> if you have turbo! 

  
-- 
|uunet!garfield!michael9|'"Proof denies faith and without faith I am nothing,"|
|michael9@odie.cs.mun.ca| says God.  "But you have given us proof," says      |
|POB 756,St.John's,Nfld.| man, "Therefore you do not exist. QED." "Oh, my,"   |
|A1S 1G8                | says God, and disappears in a puff of logic.'       |
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