Throttle Body Alignment

[DPJ]

The throttle body is not cable, but electronically operated (using a small electronic servo motor). Throttle body Alignment is when this electric motor calibrates the closed and opened position for the throttle plate and stores these values in the ECU so it (throttle body) can work open/close properly.

The throttle body can get un-aligned over time, so it will not shut/open throttle plate precisely.

 

[C1TPT]

ok, i understand i just didnt realise that it could un-align.. will you notice anything wrong with your car if it has un-aligned?

 

[DPJ]

Many people have reported that their cars feel crisper/more responsive after a TBA.

 

[JIMYU]

does doing a TBA have anything to do with reseting the ECU's adaptive memory?

and can you do it using the shareware vag-com?

cheers.

 

[C1TPT]

Many people have reported that their cars feel crisper/more responsive after a TBA.

ok cheers mate, might give it a go

 

[r8byb]

does doing a TBA have anything to do with reseting the ECU's adaptive memory?

and can you do it using the shareware vag-com?

cheers.

Think so, and hope so.. sure someone will confirm..

 

[JIMYU]

you can't do TBA with the shareware version of vagcom

 

[r8byb]

Agreed

 

[Reuvers]

Ok to bring an old thread back to life:

gonna take my tb off one day soon to polish, but am slightly confused by this thread.

On first page Phil describes a way to do the TBA without vagcom.

Then DPJ says in a later post that TBA can ONLY be done with vagcom

Then the next reply is by Phil, where he confirms what DPJ just said...??

So which is it, can or can't you do the TBA without vagcom (following Phils steps)?

Reason i am asking is becuase I do not have vagcom


cheers

 

[DPJ]

You CANNOT do a TBA without Vag-Com.

 

[olethalb]

also whould mis allignment be the cause of random revving on between gear change? ( ie. off throttle and revs continue to climb for a second before dropping off)

 

[RUM4MO]

also whould mis allignment be the cause of random revving on between gear change? ( ie. off throttle and revs continue to climb for a second before dropping off)

I think that this is intentional and is done to minimise exhaust emissions. Do the revs not just "hold" and not rise - unless of course the engine is labouring or overloaded.

 

[Reuvers]

You CANNOT do a TBA without Vag-Com.

thats what I thought...but then don't understand what Phil was saying..

 

[cuprabaz]

I never tried it via vag-com but when my car was idling badly I did as Phil described in post#8 and the car was fine afterwards??

I've done this with quite a few cars and it's improved things. If it wasn't re-aligning the TB what was it doing and why did it improve things?

 

[olethalb]

I think that this is intentional and is done to minimise exhaust emissions. Do the revs not just "hold" and not rise - unless of course the engine is labouring or overloaded.

it's not holding the rev, it's continuing to climb after you come off the pedal and only occurs randomly but when it starts it keeps doing it until you flick the ignition off and restart the car??

 

[cupraRgstar]

I remember i tried to align the TB by disconnecting the battery as i do not have Vag Com

and it sent my car haywire was overboosting and not revving over like 4000, so turned

the car off left it for a while and when i turned it back on it was all fine.... strange

 

[Cupra_J_RS]

it's not holding the rev, it's continuing to climb after you come off the pedal and only occurs randomly but when it starts it keeps doing it until you flick the ignition off and restart the car??

Let me know if you sort this, my car does the same.

I started another thread on here (search for: 'gear change over revving') that got quite detailed, but still no solution.

 

[olethalb]

yes will do, it's getting annoying! people look at me like i can't drive or i can't use the clutch!

and if you have any possible solutions please let me know, thanks.

 

[Cupra_J_RS]

To save you the bother of reading through the other thread, the 2 obvious solutions are aligning the TB as said above, and the clutch pedal sensor. Have you checked your clutch pedal sensor?

 

[olethalb]

not as yet, i had wondered if that may effect it. will be re-alligning the TB as soon as she's back on the road.