Re: Hot start problems- 5kcstq

["Robert Dalton" <rpdalton@onebox.com>]

I think it could be a weak fuel pump.  On my 1990
Audi 100, sometimes the fuel pump fails to start
right away.  You can hear the problem if you listen
carefully, because the fuel pump is supposed to
run for 3 seconds when the ignition is switched
on (before starting).  This builds fuel pressure
and makes for easy starting.  My fuel pump sometimes
just sits there, failing to start during this 3
second prep time.  The result is either an immediated
start and quick die out, or lots of cranking before
starting or both.  Interestingly the problem is
more likely to happen when hot, because then the
fuel pump wires are hot, draw less power from the
battery, and can't get the pump moving.

Now if I can only find a place to get this pump
for less than the atrociously high prices they
want in Northern Virginia. 

-- 
Robert Dalton
rpdalton@onebox.com - email
(703) 234-3969 x1020 - voicemail/fax



---- "TM" <mizutanit@mindspring.com> wrote:
> Hi listers,
> My car runs flawlessly on cold starts, but recently,
> I've had some
> serious problems with hot starts. The starter
> fires and the engine
> cranks up, but it seems like it can't maintain
> any idle and the
> engine dies after a few seconds, trying to drop
> the idle to 500 rpm,
> which isn't going to happen. Funny thing is,
> if I can get it fired
> up and moving, the problem goes away. Last night
> I had a bit of a
> scare because it took 5 tries to get the car
> going. Then, later on,
> after it was parked for a while (couple hours),
> it started and ran
> fine.
> 
> My guess? Multi-function temp switch, or some
> other similar device.
> Can someone please help in diagnosing this problem?
> Greatly appreciated,
> as I will be undertaking replacement of my dash
> lights and A/C programmer
> today and don't need any other problems.
> 
> Taka Mizutani
> '86 5kcstq
> 

__________________________________________________
FREE voicemail, email, and fax...all in one place.
Sign Up Now! http://www.onebox.com