Brake booster

1

Hi chaps,


It's not a Syncro question but I have a 1985 Dual Cab T3 which had a 3lt Ford Capri motor in it. That has been taken out and a 2.1lt VW motor has been installed.


The only issue at the moment is that when the brake peddle is depressed the engine revs race up. 


Tested of the brake booster by pumping the brake hard then turning on the engine delivers no sinking of the brake peddle. This indicates that the booster is faulty.


My question is would that make the engine race when you put your foot on the brake?


The non return value has been replaced with a known working one to eliminated at it from the equation.


Thoughts


Cheers


Peter 

2

DC's haunted!? HA!


Can't imagine any correlation really other than the accelerator cable has been badly routed such that somewhere its fouling the brake line/linkages underneath.


So to that scenario, when the brake pedal is pressed and the engine revs, can the accelerator cable be observed to be moving at the throttle body position in the engine bay?

Ken



From: Syncro_T3_Australia@yahoogroups.com <Syncro_T3_Australia@yahoogroups.com> on behalf of peter.kolevas@gmail.com [Syncro_T3_Australia] <Syncro_T3_Australia@yahoogroups.com>
Sent: Sunday, 19 February 2017 1:23 PM
To: Syncro_T3_Australia@yahoogroups.com
Subject: [Syncro_T3_Australia] Brake booster
 
 

Hi chaps,


It's not a Syncro question but I have a 1985 Dual Cab T3 which had a 3lt Ford Capri motor in it. That has been taken out and a 2.1lt VW motor has been installed.


The only issue at the moment is that when the brake peddle is depressed the engine revs race up. 


Tested of the brake booster by pumping the brake hard then turning on the engine delivers no sinking of the brake peddle. This indicates that the booster is faulty.


My question is would that make the engine race when you put your foot on the brake?


The non return value has been replaced with a known working one to eliminated at it from the equation.


Thoughts


Cheers


Peter 

3
Obviously there was a bit of electrical fiddling to return the wbx ECU and injection so maybe an electrical gremlin are the brake lights behaving ? Air leak causing it to lean out ?
Cheers peter

On Sun, Feb 19, 2017 at 12:23 PM, peter.kolevas@gmail.com [Syncro_T3_Australia] <Syncro_T3_Australia@yahoogroups.com> wrote:

Hi chaps,


It's not a Syncro question but I have a 1985 Dual Cab T3 which had a 3lt Ford Capri motor in it. That has been taken out and a 2.1lt VW motor has been installed.


The only issue at the moment is that when the brake peddle is depressed the engine revs race up.


Tested of the brake booster by pumping the brake hard then turning on the engine delivers no sinking of the brake peddle. This indicates that the booster is faulty.


My question is would that make the engine race when you put your foot on the brake?


The non return value has been replaced with a known working one to eliminated at it from the equation.


Thoughts


Cheers


Peter


4
Not sure what the throttle switch does but is it connected to your brake light
switch?
Cheers Peter

On Sun, Feb 19, 2017 at 12:23 PM, peter.kolevas@gmail.com [Syncro_T3_Australia] <Syncro_T3_Australia@yahoogroups.com> wrote:

Hi chaps,


It's not a Syncro question but I have a 1985 Dual Cab T3 which had a 3lt Ford Capri motor in it. That has been taken out and a 2.1lt VW motor has been installed.


The only issue at the moment is that when the brake peddle is depressed the engine revs race up.


Tested of the brake booster by pumping the brake hard then turning on the engine delivers no sinking of the brake peddle. This indicates that the booster is faulty.


My question is would that make the engine race when you put your foot on the brake?


The non return value has been replaced with a known working one to eliminated at it from the equation.


Thoughts


Cheers


Peter


5

Are the rev's going up when at idle? A vacuum leak will affect the idle speed, so if there is a leak in the booster, pushing the brakes can introduce a vacuum leak to the engine and affecting idle speed.

That said, the boosters are not common to fail, and I would have thought it was noticeable on the old engine also.

Simple test, isolate the vacuum line to the booster as close to the booster as possible, see how it all runs and confirm if pushing the brakes affects rev's. If it doesn't, I would re-do the test with the vacuum line to the booster isolated back at the engine just to confirm there are no leaks in the line. (more likely than in the booster itself) Hope it's not the booster as that's a big job to get it out.

Richard

6
Hi Richard,

Have do all the things suggested so far looks like the booster.

Do anybody have a spare booster lying about they would like to part with.

Cheers

Peter

0448690696
7
Maybe upgrade to the BMW booster?

Cheers,

Skot

On 20/02/2017 10:59 AM, peter.kolevas@gmail.com [Syncro_T3_Australia] wrote:

Hi Richard,


Have do all the things suggested so far looks like the booster.

Do anybody have a spare booster lying about they would like to part with.

Cheers

Peter

0448690696

--
Best regards, Scott Pitcher SPB Consulting
8
Hi Peter yes got one. Done plusminus 220T ks. Working.
$ 80 plus post say 15$
Hart



Sent from my Samsung Galaxy smartphone.


-------- Original message --------
From: "peter.kolevas@gmail.com [Syncro_T3_Australia]" <Syncro_T3_Australia@yahoogroups.com>
Date:20/02/2017 10:59 AM (GMT+10:00)
To: Syncro_T3_Australia@yahoogroups.com
Cc:
Subject: [Syncro_T3_Australia] Re: Brake booster

 

Hi Richard,


Have do all the things suggested so far looks like the booster.

Do anybody have a spare booster lying about they would like to part with.

Cheers

Peter

0448690696

9
Hi Hartmut,

It's a deal send me your bank details and I'll transfer the money.

You can send the info to


Cheers

Peter

On 20 Feb 2017 11:23 AM, "Hartmut Kiehn hartis@live.com.au [Syncro_T3_Australia]" <Syncro_T3_Australia@yahoogroups.com> wrote:

Hi Peter yes got one. Done plusminus 220T ks. Working.
$ 80 plus post say 15$
Hart



Sent from my Samsung Galaxy smartphone.


-------- Original message --------
From: "peter.kolevas@gmail.com [Syncro_T3_Australia]" <Syncro_T3_Australia@ yahoogroups.com>
Date:20/02/2017 10:59 AM (GMT+10:00)
To: Syncro_T3_Australia@ yahoogroups.com
Cc:
Subject: [Syncro_T3_Australia] Re: Brake booster

Hi Richard,


Have do all the things suggested so far looks like the booster.

Do anybody have a spare booster lying about they would like to part with.

Cheers

Peter

0448690696

10

That's great service Hart :)

Peter, when you have it out, it's worth checking for wear on the clutch pedal pin, they are known to wear quite badly, and worth repairing while your in there.

https://www.thesamba.com/vw/forum/viewtopic.php?t=500810

https://www.youtube.com/watch?v=yMKC8In4kfw

Richard

11
Thanks, Peter. Will post a bit later in the arvo. Pls send me your postal address.
Money we do later, try it first.
Hartmut

Sent from my iPad

On 20 Feb 2017, at 12:38 PM, Peter Kolevas peter.kolevas@gmail.com [Syncro_T3_Australia] <Syncro_T3_Australia@yahoogroups.com> wrote:

 

Hi Hartmut,

It's a deal send me your bank details and I'll transfer the money. 

You can send the info to 


Cheers

Peter

On 20 Feb 2017 11:23 AM, "Hartmut Kiehn hartis@live.com.au [Syncro_T3_Australia]" <Syncro_T3_Australia@yahoogroups.com> wrote:
 

Hi Peter yes got one. Done plusminus 220T ks. Working.
$ 80 plus post say 15$
Hart



Sent from my Samsung Galaxy smartphone.


-------- Original message --------
From: "peter.kolevas@gmail.com [Syncro_T3_Australia]" <Syncro_T3_Australia@ yahoogroups.com>
Date:20/02/2017 10:59 AM (GMT+10:00)
To: Syncro_T3_Australia@ yahoogroups.com
Cc:
Subject: [Syncro_T3_Australia] Re: Brake booster

 

Hi Richard,


Have do all the things suggested so far looks like the booster.

Do anybody have a spare booster lying about they would like to part with.

Cheers

Peter

0448690696

12
Peter Kolevas
56 Thredbo Drive
Worongary. 4213

On 21 Feb 2017 9:53 AM, "Hartmut Kiehn hartis@live.com.au [Syncro_T3_Australia]" <Syncro_T3_Australia@yahoogroups.com> wrote:

Thanks, Peter. Will post a bit later in the arvo. Pls send me your postal address.
Money we do later, try it first.
Hartmut

Sent from my iPad

On 20 Feb 2017, at 12:38 PM, Peter Kolevas peter.kolevas@gmail.com [Syncro_T3_Australia] <Syncro_T3_Australia@ yahoogroups.com> wrote:

Hi Hartmut,

It's a deal send me your bank details and I'll transfer the money.

You can send the info to


Cheers

Peter

On 20 Feb 2017 11:23 AM, "Hartmut Kiehn hartis@live.com.au [Syncro_T3_Australia]" <Syncro_T3_Australia@ yahoogroups.com> wrote:

Hi Peter yes got one. Done plusminus 220T ks. Working.
$ 80 plus post say 15$
Hart



Sent from my Samsung Galaxy smartphone.


-------- Original message --------
From: "peter.kolevas@gmail.com [Syncro_T3_Australia]" <Syncro_T3_Australia@yahoogrou ps.com>
Date:20/02/2017 10:59 AM (GMT+10:00)
To: Syncro_T3_Australia@yahoogroup s.com
Cc:
Subject: [Syncro_T3_Australia] Re: Brake booster

Hi Richard,


Have do all the things suggested so far looks like the booster.

Do anybody have a spare booster lying about they would like to part with.

Cheers

Peter

0448690696