A Cars forum. AutoBanter

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Go Back   Home » AutoBanter forum » Auto makers » Audi
Site Map Home Register Authors List Search Today's Posts Mark Forums Read Web Partners

Audi 100 5cyl cold start problem



 
 
Thread Tools Display Modes
  #11  
Old February 2nd 06, 02:01 AM posted to alt.autos.audi
external usenet poster
 
Posts: n/a
Default Audi 100 5cyl cold start problem

That scan would be great, wouldnt mind a wiring diagram, anyway ill
check those things tonight when i get home from work and let you know.
thanks
Caleb.

Ads
  #12  
Old February 2nd 06, 02:05 AM posted to alt.autos.audi
external usenet poster
 
Posts: n/a
Default Audi 100 5cyl cold start problem

All injectors should run on start up the cold start relay is only there to
add extra fuel when its cold like a choke
"sealdogfish" > wrote in message
oups.com...
> I will try bypassing the relay but when i turn the key to on I can hear
> the fuel pump going and fuel is definately pumping, though im not sure
> how strongly. When cold starting are the 5 injectors supposed to be
> working or is it just the cold start injector that goes until it starts
> up properly? also can i just take out the cold start injector and turn
> it on and see if it sprays?
>



  #13  
Old February 2nd 06, 07:28 PM posted to alt.autos.audi
external usenet poster
 
Posts: n/a
Default Audi 100 5cyl cold start problem

Caleb,
If you can hear the fuel pump running, and you're having a fuel delivery
problem (manually lifting plate does not provide full flow to injectors), I
would check the following:
- replace the fuel filter
- if fuel delivery is still a problem, there may be problems with the fuel
pump pre-filter (a screen mounted on the intake of the pump - may get
clogged with dirt), or fuel distributor problem.
The Bentley Manual has a diagnostic procedure that you could follow, as well
as Scott Mockry's site at:
http://www.sjmautotechnik.com/troubl...ing/ficis.html
Cheers!
Steve Sears
1987 Audi 5kTQ
1980 Audi 5k
1962 and '64 Auto Union DKW Junior deLuxes
(SPAM Blocker NOTE: Remove SHOES to reply)

"sealdogfish" > wrote in message
oups.com...
> That scan would be great, wouldnt mind a wiring diagram, anyway ill
> check those things tonight when i get home from work and let you know.
> thanks
> Caleb.
>



  #14  
Old February 2nd 06, 11:07 PM posted to alt.autos.audi
external usenet poster
 
Posts: n/a
Default Audi 100 5cyl cold start problem

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.

  #15  
Old February 2nd 06, 11:08 PM posted to alt.autos.audi
external usenet poster
 
Posts: n/a
Default Audi 100 5cyl cold start problem

I will also note that on the drive home it was absolutely wonderful. I
love this car so far and for $850 NZD ($450US) I think it was well
worth it. everything is in mint condition with full service history.
140,000ks

  #16  
Old February 4th 06, 01:41 AM posted to alt.autos.audi
external usenet poster
 
Posts: n/a
Default Audi 100 5cyl cold start problem

if you were daft enough to run the fuel pump in a no lubricating medium such
as water you deserve to have spent 30o bucks for doing so. It is a fuel pump
not a water pump. You obviously wrecked the rubbers which are "tuned" to the
fluid they are supposed to pump!


"BBO" > wrote in message ...
> "sealdogfish" > writes:
>
> > Got a major problem here kindof i think. Got a 1991 Audi 100 with a 5
> > cylinder 2.3 litre fuel injected engine.
> > you can crank it for ages and it will fire once or twice or sometimes
> > not fire at all and just keep cranking. This only happens when the
> > engine (water) is cold. If I spray ether into the intake manifold it
> > fires continually until I stop spraying but still will not start.

>
> If you are able to start and have the car "run" on ether, there is nothing
> wrong with the ignition system, but the car isn't getting any fuel.
>
> How long is it since the fuel-filter have been changed? It might be
> clogged so badly that the pump cannot get enough pressure. On my car the
> fuel pressure should be around 4 bar.
>
> Sounds like the fuelpump have gone bye bye. Usually you will be able to
> hear it going, but it isn't delivering enough pressure. Had the exact
> same problem on my car. A '93 Audi 100 2.3E.
>
> I first tested the assuption with taking out the pump and cleaned it in
> a bucket of water while applying power to it. I then washed the pump
> with brake cleaning fluid in the same manner. I let it dry and
> reinstalled.
>
> The car would then start, but the pump sounded like a hive of bees so I
> changed it for a new one. It cost me around US $300. Also: Change the
> fuel-filter if you change the fuel-pump. If not you'll have the same
> trouble in very short time.
>
> --
>
> ------------------------------------------------------------------------
> Wenn im Zweifel, Volleistung! DoD#2101
> '93 Audi 100 2.3E When in doubt, floor it!



  #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.
>



  #18  
Old February 4th 06, 02:02 AM posted to alt.autos.audi
external usenet poster
 
Posts: n/a
Default Audi 100 5cyl cold start problem

IIRC The cold start might receive power from the starter solenoid. So check
the wiring to there and also check to see that it does get power to that
wire wihle the starter is operating.
I am not sure where it grounds out if not through a thermostatic switch.

later,
dave
(One out of many daves)


"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.
>
>



  #19  
Old February 4th 06, 03:46 AM posted to alt.autos.audi
external usenet poster
 
Posts: n/a
Default Audi 100 5cyl cold start problem

It doesn't. but the cold start/ idle stabilisation circuit on older models
relies on several thermostatic inputs on later models I am sure that a
central control; cpu does it all and that should mean to uoi an dme scrap
yard find one.


"dave AKA vwdoc1" > wrote in message
et...
> IIRC The cold start might receive power from the starter solenoid. So

check
> the wiring to there and also check to see that it does get power to that
> wire wihle the starter is operating.
> I am not sure where it grounds out if not through a thermostatic switch.
>
> later,
> dave
> (One out of many daves)
>
>
> "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.
> >
> >

>
>



  #20  
Old February 4th 06, 05:02 AM posted to alt.autos.audi
external usenet poster
 
Posts: n/a
Default Audi 100 5cyl cold start problem

I promise if I can with help set up a page on the internet to give this
information for free with a scanned image of the Hayenes manual with all
rights reserved to all authourity in respect of the fact that the Audi
company made this car and place the test schedules for this car online
inrespect of the fuel problems etc. I think that any car that is 12 years
old should havr all aspects of thier design "liberated" for the benefit of
us that want them to be. IF a CAR has a 6 year lifespan or guarantee the
desiign should be free to anyone that wants to fix it. Lets make **** to
last. ANyway I #ve had a drink. I love my car and don't have a curent
girlfriend to prove it.

AUDI 100 CD AUTO 2226cc shagged bx no information I love this car and I will
not let her die



"sealdogfish" > wrote in message
oups.com...
> Got a major problem here kindof i think. Got a 1991 Audi 100 with a 5
> cylinder 2.3 litre fuel injected engine.
> you can crank it for ages and it will fire once or twice or sometimes
> not fire at all and just keep cranking. This only happens when the
> engine (water) is cold. If I spray ether into the intake manifold it
> fires continually until I stop spraying but still will not start. I
> have removed two of the fuel lines going to the injectors and there is
> no fuel pumping up them but there is on the cold start fuel line. Im
> not sure if thats normal or not. but if i push up the lever thingy
> behind the air filter then fuel pumps very slowly up all the injector
> fuel lines. help help help!!!!
>



 




Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
rec.autos.makers.chrysler FAQ, Part 1/6 Dr. David Zatz Chrysler 5 August 26th 05 05:30 AM
rec.autos.makers.chrysler FAQ, Part 1/6 Dr. David Zatz Chrysler 5 May 24th 05 05:27 AM
rec.autos.makers.chrysler FAQ, Part 1/6 Dr. David Zatz Chrysler 5 May 8th 05 05:29 AM
rec.autos.makers.chrysler FAQ, Part 1/6 Dr. David Zatz Chrysler 5 March 21st 05 06:33 AM
rec.autos.makers.chrysler FAQ, Part 1/6 Dr. David Zatz Chrysler 10 December 2nd 04 06:19 AM


All times are GMT +1. The time now is 03:28 AM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright 2004-2018 AutoBanter.
The comments are property of their posters.