Hello,

I have an '84 Audi 4000 1.8L fuel injected car that has "fuel
delivery" problems. It will start and drive for up to 5-10 minutes
until it starts to loose power, sputter and hesitate and finally stall.
While these symptoms are present, trying to use the accelerator
actually seems to make the symptoms worse. For example: your stopped
at a light and try to accelerate. This is when it will ususally stall
out.

My local VW/Audi/BMW mechanic cleaned some gunk out of the fuel
pump and I drove the car for 30 minutes until the symptoms returned.
My mechanic says that he is not sure what it is and if he starts
replacing parts it is going to get expensive. He has "confirmed"
that the fuel pump is working at least when idling but not while the
car is being driven.

So, if you might have any suggestions to offer or might know
someone who knows these cars I'm all ears. Thanks in advance for
your attention.

-Chris

 

Does it immediately start back up?

Did you mechanic do a fuel pressure test on your vehicle?
Did he check the current at the Fuel Pressure Regulator? Might be a bad
ground......located at the cold start valve IIRC.
******A lot of times I find that someone removes the fuse to this part of
the system thinking it is a spare fuse.****** lol

Is the fuel filter new? There should be a container near the fuel pump that
is installed in the fuel hose/line from the gas tank to the fuel pump.
Maybe it is clogged.
Usually the pump complains about a lack of fuel by Whining louder.

Maybe there is a serious vent problem and vacuum is created inside of the
tank. Try taking off or loosening the gas cap to see if that stalling
changes.

3 things needed:
Compression
Fuel
Spark

later,
dave
(One out of many daves)


"youngc" <youngc123@hotmail.com> wrote in message
news:1126464635.426418.106000@g49g2000cwa.googlegr oups.com...
> Hello,
>
> I have an '84 Audi 4000 1.8L fuel injected car that has "fuel
> delivery" problems. It will start and drive for up to 5-10 minutes
> until it starts to loose power, sputter and hesitate and finally stall.
> While these symptoms are present, trying to use the accelerator
> actually seems to make the symptoms worse. For example: your stopped
> at a light and try to accelerate. This is when it will ususally stall
> out.
>
> My local VW/Audi/BMW mechanic cleaned some gunk out of the fuel
> pump and I drove the car for 30 minutes until the symptoms returned.
> My mechanic says that he is not sure what it is and if he starts
> replacing parts it is going to get expensive. He has "confirmed"
> that the fuel pump is working at least when idling but not while the
> car is being driven.
>
> So, if you might have any suggestions to offer or might know
> someone who knows these cars I'm all ears. Thanks in advance for
> your attention.
>
> -Chris
>

 

I mis-posted this in another thread. Bad connection with my Qwest DSL for last
week may have delayed a thread loading or I may have just screwed up.
Anyway >>>

In an earlier thread about an '86 T44 I was suggesting that the problem was the
fuel tank lining peeling off and clogging the fuel pump intake screen
intermittently. I would think that this may be your problem too.

Fix:
-cut intake screen off pump and replace fuel filter more often.

You might also have a weak fuel pump relay.

youngc wrote:

> Hello,
>
> I have an '84 Audi 4000 1.8L fuel injected car that has "fuel
> delivery" problems. It will start and drive for up to 5-10 minutes
> until it starts to loose power, sputter and hesitate and finally stall.
> While these symptoms are present, trying to use the accelerator
> actually seems to make the symptoms worse. For example: your stopped
> at a light and try to accelerate. This is when it will ususally stall
> out.
>
> My local VW/Audi/BMW mechanic cleaned some gunk out of the fuel
> pump and I drove the car for 30 minutes until the symptoms returned.
> My mechanic says that he is not sure what it is and if he starts
> replacing parts it is going to get expensive. He has "confirmed"
> that the fuel pump is working at least when idling but not while the
> car is being driven.
>
> So, if you might have any suggestions to offer or might know
> someone who knows these cars I'm all ears. Thanks in advance for
> your attention.
>
> -Chris
>

 

> I have an '84 Audi 4000 1.8L fuel injected car that has "fuel
> delivery" problems. It will start and drive for up to 5-10 minutes
> until it starts to loose power, sputter and hesitate and finally stall.
> While these symptoms are present, trying to use the accelerator
> actually seems to make the symptoms worse. For example: your stopped
> at a light and try to accelerate. This is when it will ususally stall
> out.
>
> My local VW/Audi/BMW mechanic cleaned some gunk out of the fuel
> pump and I drove the car for 30 minutes until the symptoms returned.
> My mechanic says that he is not sure what it is and if he starts
> replacing parts it is going to get expensive. He has "confirmed"
> that the fuel pump is working at least when idling but not while the
> car is being driven.
>
> So, if you might have any suggestions to offer or might know
> someone who knows these cars I'm all ears. Thanks in advance for
> your attention.
>
> -Chris

Tell your mechanic to test the entire fuel process; from the fuel tank to the fuel injectors, should take a couple of hours, and
make sure all hoses are connected that need to be connected, unlike one of mine which caused all my various problems

Chris

 

Dave,

Come to think of it, I did replace the fuel filter 6 to 12 months
before this stalling began. I'm no where near a mechanic so anything
is possible although I was careful to put the filter flow in the
correct direction. The pump does whine a bit but I can't say for sure
if it has gotten louder. I'm not sure if he did a fuel pressure test
or check the fuel pressure regulator.

The cold start valve IIRC is located where? And the fuse is
located where? I'll check the fuel filter and see if the gas cap
technique helps out. I really appreciate your input on this.