View Single Post
  #17  
Old February 4th 06, 01:54 AM posted to alt.autos.audi
external usenet poster
 
Posts: n/a
Default Audi 100 5cyl cold start problem

It still could be expensive 1991 ? but still only 80K Miles is nothing
sounds like blockages, but I would also suggest you clean out the pipes that
run the air / rocker cover / vacuum and especially the venturis (do it with
solvent not poke things in there. If the Idle stabilisation circuit has
blown itself and there could be melted wires back to it if any have been
subjected to heat at any time and contacted earth there will be. The
original circuits were built of discreet components and probably will be
okay but the wires might have let go. There are extra wires on most of these
cars for cruise control and turbo connections that flap about you may need
to run new wires and this might help. Also check that the temperature sender
units are working and the connections are good and clean. There is one on a
2226cc unit that sits under the thermostat that I have found troublesome
that may be the one that activates the cold start injector (corrosion may be
the only reason)

They do give up and you must buy the correct ones to replace them and they
change massively on models over the range so get the chassis number to a
dealer to make sure you have the correct ones.

Paul


Thanks for the extra feed back. It sounds like you're going through the
exact same things I have been through with mine.
"sealdogfish" > wrote in message
ups.com...
> Well I have temporarily resolved the problem, I was just buying this
> car last night so I wanted to make sure the problem wasnt too terrible
> before i bought it. It turns out the cold start injector was not
> getting any power and to make matters worse i mustve knocked the
> distributor feedback plug out but i found that early enough. So i
> shorted the injector straight to the battery when cranking and for a
> short while afterwards and it worked flawlessly (although a slightly
> rich mixture for a few seconds) So now my only problem is to find out
> why there is no voltage to the cold start. The temperature guage is
> also not working which i will have to sort out.
> Anyone got any ideas on why it would stall when stopped and in gear
> with the brake on? only did this twice in a 40 minute drive.
>



Ads