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Old March 5th 07, 08:28 AM posted to alt.autos.audi
Audrey[_2_]
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Posts: 2
Default Audi 4000s fuel problem - wont start

Try replacing the temperature control switch which could be sending a
false reading to your ECU hence no fuel in cylinders.

"TonyJ" wrote:
> wrote:
> > I was wondering of anyone could help me with a problem that

> suddenly
> > developed with my AUDI,
> >
> > The car is a 1987 Audi 4000s 1.8L
> > Here is the deal, the car will start for second or two, but

> will not
> > rev up, then it dies.
> >
> > Fuel pump and filters are new.
> >
> > Strong fuel pressure to the Fuel injector unit.
> >
> > The injector unit is sending fuel to the cold start valve,

> but not to
> > the cylinders, thus the car will start but will not continue

> to run.
> > The pressure to the cold start valve is strong, but not a

> drop to the
> > fuel injectors.
> >
> > I replaced the external fuel regulator with a spare one and

> checked for
> > vacuum leaks etc.
> >
> > I am not sure where to look from here, internally on the

> Fuel Injection
> > Unit, or to a relay or other control.
> >
> > As I stated the problem happened overnight.
> >
> > Any help would be appreciated.
> > I have not used a internet group before, do I hope I am

> doing this
> > right...........
> >
> >
> >
> >
> >
> > Thanks,
> >
> >
> >
> > Richy Jackson
> >

> If the air plate just above the air filter is stuck the
> injectors will not fire.
> This can be due to vacuum leaks (you checked but check
> again) or deposits on
> the rod above the plate.
>
> Open air cleaner and reach up into the intake just above. The
> plate should move
> but with a little pressure. Don't force it.
>
> Other ideas:
> Differential fuel pressure sensor (just in front of fuel
> distributor.
>
> Blown engine management fuse (in the side of the relay box.
>
> Failing engine temp sensor. In the T44s it is called the MFTS
> and it is located
> by the upper radiator hose inlet to the engine.


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