From: Matthew.Ridges on
HI all, I really need your guys technical knowledge!

I have a 2000 (W) reg VW Golf 1.6 8v SR (AKL) engine.

It ran fine.. but would not start on the key, unless you blipped the
throttle. So after reading up on various forums I decided to remove the
throttle body and clean it with carb cleaner.

Did all this, and also cleaned the air flow meter.

Put it all back together and the car started first turn of the key! how ever
idled at 1200rpm. then when you touch the throttle it return to 1300- and
then hunts between 1200 - 1600 rpm.

So... I then called my friend who has vagcom he went in and checked for
fault codes. nothing.. he then tried to do a throttle adaptation... but this
fails every time and says not supported. if you do a reset it says reset
then throws an error code saying unable to complete.. so he said go get a
replacement throttle body...

so �75 later for a refurbished unit and fitting it all, I am still back at
the same problem..

went to my local garage who I know well, he connected it to Snap-On Solus
diagnostics. tried to perform a adapation and again says on both throttle
bodies (not supported) so then he tried a reset. it says reset performed.

start the car... same problem still idles fast and hunts... as soon as you
touch the pedal.

So took it to another friend who has a snap on verus diagnostics...

he said.. change the coolent temp sensor... �33 later from VW and same
issue.

He then tried to carry out a reset, it says it has done this and if you
watch the throttle body the butterfly valve moves.

but when you start... same issue.. I checked all earths under the battery
and cleaned them. still same issue.

He called a tech at audi, they said try the relay .. replaced that.. same
issue...

I am getting to the end of my patience now no matter what I try it does not
seem to make any difference. and until I cleaned the throttle body it was
fine and only would not start on the key unless you blipped the throttle....

Now when you scan the car for faults on versus (snap-on) you get error
code..


00533 - idle speed regulation lower stop value

we have checked all vacuum's for leaks, checked air intake pipe and no leak.
checked the gasket between throttle body, checked the inlet manifold for
leaks.. and nothing... yet it still hunts and idles fast...

if you disconnect the mass air flow after about 15 seconds the engine
returns to 900rpm but runs rough, and the hunting stops...

any help guys would be really really appreciated...

any idea why we are not able to run adaptions in vagcom?

Many Thanks.




From: Stu on
On Thu, 1 Jul 2010 00:15:01 +0100, "Matthew.Ridges" <none(a)host.com>
wrote:

>HI all, I really need your guys technical knowledge!
>
>I have a 2000 (W) reg VW Golf 1.6 8v SR (AKL) engine.
>
>It ran fine.. but would not start on the key, unless you blipped the
>throttle. So after reading up on various forums I decided to remove the
>throttle body and clean it with carb cleaner.
>
>Did all this, and also cleaned the air flow meter.
>
>Put it all back together and the car started first turn of the key! how ever
>idled at 1200rpm. then when you touch the throttle it return to 1300- and
>then hunts between 1200 - 1600 rpm.
>
>So... I then called my friend who has vagcom he went in and checked for
>fault codes. nothing.. he then tried to do a throttle adaptation... but this
>fails every time and says not supported. if you do a reset it says reset
>then throws an error code saying unable to complete.. so he said go get a
>replacement throttle body...
>
>so �75 later for a refurbished unit and fitting it all, I am still back at
>the same problem..
>
>went to my local garage who I know well, he connected it to Snap-On Solus
>diagnostics. tried to perform a adapation and again says on both throttle
>bodies (not supported) so then he tried a reset. it says reset performed.
>
>start the car... same problem still idles fast and hunts... as soon as you
>touch the pedal.
>
>So took it to another friend who has a snap on verus diagnostics...
>
>he said.. change the coolent temp sensor... �33 later from VW and same
>issue.
>
>He then tried to carry out a reset, it says it has done this and if you
>watch the throttle body the butterfly valve moves.
>
>but when you start... same issue.. I checked all earths under the battery
>and cleaned them. still same issue.
>
>He called a tech at audi, they said try the relay .. replaced that.. same
>issue...
>
>I am getting to the end of my patience now no matter what I try it does not
>seem to make any difference. and until I cleaned the throttle body it was
>fine and only would not start on the key unless you blipped the throttle....
>
>Now when you scan the car for faults on versus (snap-on) you get error
>code..
>
>
>00533 - idle speed regulation lower stop value
>
>we have checked all vacuum's for leaks, checked air intake pipe and no leak.
>checked the gasket between throttle body, checked the inlet manifold for
>leaks.. and nothing... yet it still hunts and idles fast...
>
>if you disconnect the mass air flow after about 15 seconds the engine
>returns to 900rpm but runs rough, and the hunting stops...
>
>any help guys would be really really appreciated...
>
>any idea why we are not able to run adaptions in vagcom?
>
>Many Thanks.
>
>
>
Quite possibly the MAF, it died on my car 3 years ago and I had
similar sort of issues. In my case, it was giving a higher reading
then expected and causing the system to overfuel.

You can test it with a voltmeter connected on pins 1&2. Should be 1.1V
at idle, rising to 1.7V at 3000rpm (information from autodata).


Stu
From: Duncan Wood on
On Thu, 01 Jul 2010 00:15:01 +0100, Matthew.Ridges <none(a)host.com> wrote:

> HI all, I really need your guys technical knowledge!
>
> I have a 2000 (W) reg VW Golf 1.6 8v SR (AKL) engine.
>
> It ran fine.. but would not start on the key, unless you blipped the
> throttle. So after reading up on various forums I decided to remove the
> throttle body and clean it with carb cleaner.
>
> Did all this, and also cleaned the air flow meter.
>
> Put it all back together and the car started first turn of the key! how
> ever
> idled at 1200rpm. then when you touch the throttle it return to 1300- and
> then hunts between 1200 - 1600 rpm.
>
> So... I then called my friend who has vagcom he went in and checked for
> fault codes. nothing.. he then tried to do a throttle adaptation... but
> this
> fails every time and says not supported. if you do a reset it says reset
> then throws an error code saying unable to complete.. so he said go get a
> replacement throttle body...
>
> so £75 later for a refurbished unit and fitting it all, I am still back
> at
> the same problem..
>
> went to my local garage who I know well, he connected it to Snap-On Solus
> diagnostics. tried to perform a adapation and again says on both throttle
> bodies (not supported) so then he tried a reset. it says reset performed.
>
> start the car... same problem still idles fast and hunts... as soon as
> you
> touch the pedal.
>
> So took it to another friend who has a snap on verus diagnostics...
>
> he said.. change the coolent temp sensor... £33 later from VW and same
> issue.
>
> He then tried to carry out a reset, it says it has done this and if you
> watch the throttle body the butterfly valve moves.
>
> but when you start... same issue.. I checked all earths under the battery
> and cleaned them. still same issue.
>
> He called a tech at audi, they said try the relay .. replaced that.. same
> issue...
>
> I am getting to the end of my patience now no matter what I try it does
> not
> seem to make any difference. and until I cleaned the throttle body it was
> fine and only would not start on the key unless you blipped the
> throttle....
>
> Now when you scan the car for faults on versus (snap-on) you get error
> code..
>
>
> 00533 - idle speed regulation lower stop value
>
> we have checked all vacuum's for leaks, checked air intake pipe and no
> leak.
> checked the gasket between throttle body, checked the inlet manifold for
> leaks.. and nothing... yet it still hunts and idles fast...
>
> if you disconnect the mass air flow after about 15 seconds the engine
> returns to 900rpm but runs rough, and the hunting stops...
>
> any help guys would be really really appreciated...
>
> any idea why we are not able to run adaptions in vagcom?
>
> Many Thanks.
>
>
>
>

connect vag-com & drive it down the road recording the maf output, then go
& compare it with the forum results. & probably check again for any vacuum
leaks

--
Duncan Wood