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98 A4 1.8t Sport starting problems



 
 
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  #1  
Old May 10th 06, 03:07 PM posted to alt.autos.audi
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Default 98 A4 1.8t Sport starting problems

Hello all, can you help !!!

I have a 1998 A4 1.8 Turbo Sport with an ignition fault. I have had it
at the local dealer on the VAGCOM and it came up with 'WEAK SIGNAL'. I
have done many hours of research on the net about this and theories
vary a great deal.

2 things....

1) Is this a known fault ? if so what is the problem
2) Before I go spending £100's on things that might not fix it, here
is what I have been told it could be.....

· New Key required

· New Barrell required

· New Signal unit required

· Problems with the coils

· Apparently there is a wire that is on the steering column that
connects the reader coil and this was designed too short and as such
with movement to the steering column can cause this to faulter and come
loose.

What the problem basically is - When you start the car, it runs for
approx 2-3 seconds then cuts out, sometimes it will start on the second
go but sometimes 3-5 attempts is required. I cant think that it is the
key as I have 3 and they all do the same......

Please see if you can give me a definitive fix as everyone seems to
have different ideas about what the problem is / what is failing......

Many thanks in advance

Ads
  #2  
Old May 10th 06, 09:48 PM posted to alt.autos.audi
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Default 98 A4 1.8t Sport starting problems

I would be looking at either the MAF or the Crank Position sensor.

TonyJ
98 1.8TQM

SparkyNorwich wrote:

> Hello all, can you help !!!
>
> I have a 1998 A4 1.8 Turbo Sport with an ignition fault. I have had it
> at the local dealer on the VAGCOM and it came up with 'WEAK SIGNAL'. I
> have done many hours of research on the net about this and theories
> vary a great deal.
>
> 2 things....
>
> 1) Is this a known fault ? if so what is the problem
> 2) Before I go spending £100's on things that might not fix it, here
> is what I have been told it could be.....
>
> · New Key required
>
> · New Barrell required
>
> · New Signal unit required
>
> · Problems with the coils
>
> · Apparently there is a wire that is on the steering column that
> connects the reader coil and this was designed too short and as such
> with movement to the steering column can cause this to faulter and come
> loose.
>
> What the problem basically is - When you start the car, it runs for
> approx 2-3 seconds then cuts out, sometimes it will start on the second
> go but sometimes 3-5 attempts is required. I cant think that it is the
> key as I have 3 and they all do the same......
>
> Please see if you can give me a definitive fix as everyone seems to
> have different ideas about what the problem is / what is failing......
>
> Many thanks in advance
>

  #3  
Old May 11th 06, 10:49 AM posted to alt.autos.audi
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Posts: n/a
Default 98 A4 1.8t Sport starting problems

Oh thats a new one for the think pot !!!

Cheers for that, What are they ? Where are they !!!

Regards

  #4  
Old May 11th 06, 06:00 PM posted to alt.autos.audi
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Default 98 A4 1.8t Sport starting problems

If you are referring to my comment, the MAF is in the intake air box on the top.
It has the electrical wires plugged in to it.

The crank position sensor is a bit more difficult to access. It is located on
the front of the head just behind the timing belt.

SparkyNorwich wrote:
> Oh thats a new one for the think pot !!!
>
> Cheers for that, What are they ? Where are they !!!
>
> Regards
>

  #5  
Old May 11th 06, 06:06 PM posted to alt.autos.audi
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Default 98 A4 1.8t Sport starting problems

The first thing you should do is pull the codes to see what the system thinks is
wrong. Don't spend money and time on parts without the information.

About all I would do before pulling the codes is to look for obvious problems
like cracked vacuum lines and broken wires. You could unplug the MAF to see if
the connection is dirty or wet but more than that requires pulling the codes.

SparkyNorwich wrote:

> Oh thats a new one for the think pot !!!
>
> Cheers for that, What are they ? Where are they !!!
>
> Regards
>

  #6  
Old May 12th 06, 04:04 PM posted to alt.autos.audi
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Default 98 A4 1.8t Sport starting problems

I will have a look this weekend, thanks chaps - But seeing as it said
'Weak Skey signal, do you really think that coulc be associated with
such things as cracked vacume pipes ??? I will let you know how I get
on.....
What do you mean by 'Pull codes' ?? Is that not what they should have
done at the dealership ??? Even they seemd quite vague as to what the
problem could be.....

Cheers

  #7  
Old May 12th 06, 06:16 PM posted to alt.autos.audi
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Posts: n/a
Default 98 A4 1.8t Sport starting problems

The dealer has a diagnostic system that interrogates the ECU for fault codes.

The system can also be purchased by individuals from an after market source for
about $300US

SparkyNorwich wrote:

> I will have a look this weekend, thanks chaps - But seeing as it said
> 'Weak Skey signal, do you really think that coulc be associated with
> such things as cracked vacume pipes ??? I will let you know how I get
> on.....
> What do you mean by 'Pull codes' ?? Is that not what they should have
> done at the dealership ??? Even they seemd quite vague as to what the
> problem could be.....
>
> Cheers
>

 




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