[Vwdiesel] Re: Car runs hot with bra on. Take it off.

[Derek]

I can definitely check for the voltage drop, but current I can't.  My meter
will only go for 10A.  I had a CB in there before, but stopped using it.
For some reason, my fans seemed to work less than with a fuse in there.
Fuse would blow only so often, CB, damned near daily for a bit.  Fuses
seemed to hold out for a bit longer.  Maybe I just need a higher rated CB.


----- Original Message -----
From: "Val Christian" <val at swamps.roc.ny.us>
To: "Derek" <weasel1 at sympatico.ca>
Cc: <vwdiesel at vwfans.com>
Sent: Wednesday, December 01, 2004 1:06 PM
Subject: Car runs hot with bra on. Take it off.


> I can't specifically address your head issue, but I had something similar
> happen one summer on my 91 Jetta.  The car was stopped, and the AC
running.
> The overpressure blew on the dryer, which resulted in a new dryer, evac
and
> recharge.  I already had 30# of R-12, but if you had to buy R-12 at
today's
> penalty prices, it would be expensive.   Oh, when it blew, it was a great
big
> cloud of mist and oil, on a sticky hot day.  Fun fun.  I was not a cool
cookie
> driving home.
>
> Just guessing...but look for a voltage drop on the power to your fan.
> That could increase the current draw.  Your bushings/bearings in the fan
> could also be getting sticky.  The increased sticksion (I think that is
really
> a term (u(s) - u(k)) ) could also convert into a higher startup
> current.
>
> I'd consider replacing the blade fuse, with a blade CB, like used for
> headlights.  At least it'll try to come on.  If you have an inductive
> ampmeter for DC, I'd look at the peak current and the average current.
> My guess is that the average current is getting high, and cycling
> the fan with a high startup current and who knows what else, is
> causing the fuse to get warm.
>
> The fans are different.  My A2 uses a different fan (housing at least)
> than the A1 fan I pulled off of one of my A1 Rabbits.
>
> Good luck.
>
> Val
>
>
> >
> > I know that I have mentioned this in the past, but it appears as though
=
> > my problem has reared its ugly head again.  Occasionally, but not =
> > always, the rad fans blow a fuse ( the one near the coolant bottle ).  =
> > Today was a bad day, apparently with an unknown blown fuse again, my =
> > wife headed off to work.  Well, I still haven't taken the bra off and =
> > its snowing quite a bit.  I guess enough caked on to block the airflow =
> > and this started to overheat the car.  She pulled off, let the car =
> > settle and called me.  Now the bra is in the trunk and there is a new =
> > fuse in it again.  I just hope it didn't toast the head gasket, but it =
> > seems to be ok so far.   My guess is that because the fans are old, that
=
> > the start-up current on the motors is a bit higher than it used to be.
=
> > Normally, I would even think of putting in a higher rated fuse, but was
=
> > contemplating this.  Is there a higher one for those blade fuses ?  If =
> > not, I guess I should think about new fans.  I don't want VW ones again,
=
> > too much $$$.  I was thinking aftermarket or stealing ones from a =
> > wrecked car.  Ones from a wrecker could have questionable performance
( =
> > as mine do ) so that's a gamble, so I am leaning towards aftermarket.  =
> > Any ideas that won't cost a small fortune ?
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>
>