Actuator

Moose · 04-04-2005, 15:39

Where is it and what tool do I need to adjust it?

100bhp TDi btw.

heers

Moose · 04-04-2005, 22:38

Anyone?

I'm guessing turning the boost down slightly may prolong the life of turbo, hence my post.

ScoobyChris · 05-04-2005, 09:19

Isn't adjusting the boost an ECU mod so you'd need someone who could do ODB-II tuning. Obviously I may be talking out of my a$$

Chris

Chavyboy · 06-04-2005, 17:29

Yes I think the Boost Actuator is controlled by the ECU, this if you where to get the car chipped the actuator setting is change to hold boost longer.

***Neo_VR*** · 06-04-2005, 19:46

The Turbo doesnt have an wastegate as such.. the actuator controls the VNT vanes.. so all you can really do is limit the boost at low RPM but it will not have an effect at high RPM. the actuator itself is controlled from the ecu, using that box on top of the drivers side turrett.

Moose · 06-04-2005, 20:14

Ok then, thanks people. What revs does the turbo kick in? I normally change about 2k so would that hit the turbo? I'm thinking turbo's are expensive items and so want to extend this one's life as much as possible.

***Neo_VR*** · 06-04-2005, 20:26

The turbo is actually spinning all the time.. the VNT change so it starts to boost around 1700rpm

you shouldnt be afraid to rev it, working the turbo hard helps keep it clean (as anyone on the RR day may have saw with Josh's mums car on the rollers) it was very smokey due to all the deposits being burned off and the oilseals getting a good work out.

Jon TDI · 06-04-2005, 20:46

What sort of symtoms would you find if the actuator is knackered?

***Neo_VR*** · 06-04-2005, 21:32

It wouldnt boost below about 2000rpm, i thought it was the problem with my negative deviation fault code but its working fine. im beginning to sway towards either a boost leak, or the MAP sensor on my car now

There is a tester thing on vagcom for this
think its go to monitor block 11 in the engine section then click basic setting.
it will rev the engine to about 1700 then move the actuator blades, you will hear a click, then a whisle as the turbo spools up.. then it switches off 5 seconds later.. and back on

i found this when having a play last night

Jon TDI · 06-04-2005, 22:30

Colin, you know of my problem. Just thinking of possible causes of it.
Is there anything that controls the amount of boost at the high end of the rev range(other than the ECU)?

Maybe I should invest in VAG COM myself! What would I need?

***Neo_VR*** · 06-04-2005, 23:44

Quote:

Originally Posted by Jon TDI

Colin, you know of my problem. Just thinking of possible causes of it.
Is there anything that controls the amount of boost at the high end of the rev range(other than the ECU)?

Maybe I should invest in VAG COM myself! What would I need?

are you sure that its overboosting? - when my car goes into limp mode (bar once) its not left a fault code.. it could be several problems, as IIRC the boost will stay constant from about 2k onwards on a diesel.

for vagcom, you would need a cable and a laptop... and the software.. (shareware would do)

Im hoping to do some testing on my car as soon as i get my laptop sorted so should be able to help more

WW_VRS · 06-04-2005, 23:48

General concensus appears to be to give the turbo a little workout at least every once in a while

I do try and keep mpg in mind on my daily commute as I cannot afford to be running at 20mpg

- it's worth giving it a bit of revving to do at least once a week (noting you probably wanna do this with a properly warmed up engine).

Normally I get stuck in a traffic jam at some stage, so I try to accelerate firmly when the traffic clears after that, and then let the engine idle for a bit before turning off the engine. Gets rid of the crap and gives the turbo the chance to cool down a little.

Jon TDI · 07-04-2005, 08:29

Quote:

Originally Posted by Neo_VR

are you sure that its overboosting? - when my car goes into limp mode (bar once) its not left a fault code.. it could be several problems, as IIRC the boost will stay constant from about 2k onwards on a diesel.

for vagcom, you would need a cable and a laptop... and the software.. (shareware would do)

Im hoping to do some testing on my car as soon as i get my laptop sorted so should be able to help more

I'll find out if any fault codes are logged & hopefully what the problem is on Monday.
Boost will stay constant untill 4Krpm & then die off. This is where mine is hitting limp mode (around 4.2Krpm).

I think I'll have a look at some laptops this weekend!!!

(Sorry for the thread hijack!!)

***DGW*** · 07-04-2005, 10:40

Quote:

Originally Posted by Jon TDI

I think I'll have a look at some laptops this weekend!!!

Look for one with a USB2 port for ease of use and fast communication using VAG-COM software.

***Neo_VR*** · 07-04-2005, 11:35

Quote:

Originally Posted by DGW

Look for one with a USB2 port for ease of use and fast communication using VAG-COM software.

And a serial port if you dont fancy shelling out for the expensive cable

04-04-2005, 15:39	#1
Moose Briskodian Join Date: Jan 2005 Location: I'm a monkey from outer space, woooooooo ahhhhhhhhh hehe hooohaa Posts: 4,952 Thanks: 0 Thanked 10 Times in 10 Posts	Actuator Where is it and what tool do I need to adjust it? 100bhp TDi btw. heers __________________ Sunlight Silver MX-5 1.8 Sport

04-04-2005, 22:38	#2
Moose Briskodian Join Date: Jan 2005 Location: I'm a monkey from outer space, woooooooo ahhhhhhhhh hehe hooohaa Posts: 4,952 Thanks: 0 Thanked 10 Times in 10 Posts	Anyone? I'm guessing turning the boost down slightly may prolong the life of turbo, hence my post. __________________ Sunlight Silver MX-5 1.8 Sport

05-04-2005, 09:19	#3
ScoobyChris Briskodian Join Date: Mar 2003 Location: Andover Posts: 18,117 Thanks: 15 Thanked 326 Times in 284 Posts	Isn't adjusting the boost an ECU mod so you'd need someone who could do ODB-II tuning. Obviously I may be talking out of my a$$ Chris __________________ Holding up the traffic in a little Italian..........

06-04-2005, 17:29	#4
Chavyboy Proud Dad Join Date: Jan 2004 Location: Darkest Deepest Peterborough Posts: 3,789 Thanks: 0 Thanked 0 Times in 0 Posts	Yes I think the Boost Actuator is controlled by the ECU, this if you where to get the car chipped the actuator setting is change to hold boost longer. __________________ 2004 '54' Citroen Picasso 1.6 16v Desire HDI in Wicked Red 2004 '54' Vauxhall Corsa 1.3 CDTI Energy Ex Skoda owner

06-04-2005, 19:46	#5
*Neo_VR* UberMod™ Join Date: Feb 2003 Location: Manchester Posts: 12,064 Thanks: 66 Thanked 161 Times in 112 Posts	The Turbo doesnt have an wastegate as such.. the actuator controls the VNT vanes.. so all you can really do is limit the boost at low RPM but it will not have an effect at high RPM. the actuator itself is controlled from the ecu, using that box on top of the drivers side turrett. __________________ ColGod the UberMod VXR, Gti, ST, Type-R, vRS, Cupra, Shifty... An MPS fears not these things...

06-04-2005, 20:14	#6
Moose Briskodian Join Date: Jan 2005 Location: I'm a monkey from outer space, woooooooo ahhhhhhhhh hehe hooohaa Posts: 4,952 Thanks: 0 Thanked 10 Times in 10 Posts	Ok then, thanks people. What revs does the turbo kick in? I normally change about 2k so would that hit the turbo? I'm thinking turbo's are expensive items and so want to extend this one's life as much as possible. __________________ Sunlight Silver MX-5 1.8 Sport

06-04-2005, 20:26	#7
*Neo_VR* UberMod™ Join Date: Feb 2003 Location: Manchester Posts: 12,064 Thanks: 66 Thanked 161 Times in 112 Posts	The turbo is actually spinning all the time.. the VNT change so it starts to boost around 1700rpm you shouldnt be afraid to rev it, working the turbo hard helps keep it clean (as anyone on the RR day may have saw with Josh's mums car on the rollers) it was very smokey due to all the deposits being burned off and the oilseals getting a good work out. __________________ ColGod the UberMod VXR, Gti, ST, Type-R, vRS, Cupra, Shifty... An MPS fears not these things...

06-04-2005, 20:46	#8
Jon TDI Briskodian Join Date: Jan 2004 Location: North East England Posts: 3,197 Thanks: 34 Thanked 29 Times in 28 Posts	What sort of symtoms would you find if the actuator is knackered? __________________ Black Magic SEAT Leon 2.0 TDI Sport - Green panel thingy, Upsolute jiggery pokery, Koni FSD/Eibach Pro Kit bouncy stuff, 18" Audi A8 Parabol rims, '08 Cupra black/honeycombe grille. Also driving around in a Mini ONE that thinks it's a Cooper!

06-04-2005, 21:32	#9
*Neo_VR* UberMod™ Join Date: Feb 2003 Location: Manchester Posts: 12,064 Thanks: 66 Thanked 161 Times in 112 Posts	It wouldnt boost below about 2000rpm, i thought it was the problem with my negative deviation fault code but its working fine. im beginning to sway towards either a boost leak, or the MAP sensor on my car now There is a tester thing on vagcom for this think its go to monitor block 11 in the engine section then click basic setting. it will rev the engine to about 1700 then move the actuator blades, you will hear a click, then a whisle as the turbo spools up.. then it switches off 5 seconds later.. and back on i found this when having a play last night __________________ ColGod the UberMod VXR, Gti, ST, Type-R, vRS, Cupra, Shifty... An MPS fears not these things... Last edited by Neo_VR; 06-04-2005 at 21:34.

06-04-2005, 22:30	#10
Jon TDI Briskodian Join Date: Jan 2004 Location: North East England Posts: 3,197 Thanks: 34 Thanked 29 Times in 28 Posts	Colin, you know of my problem. Just thinking of possible causes of it. Is there anything that controls the amount of boost at the high end of the rev range(other than the ECU)? Maybe I should invest in VAG COM myself! What would I need? __________________ Black Magic SEAT Leon 2.0 TDI Sport - Green panel thingy, Upsolute jiggery pokery, Koni FSD/Eibach Pro Kit bouncy stuff, 18" Audi A8 Parabol rims, '08 Cupra black/honeycombe grille. Also driving around in a Mini ONE that thinks it's a Cooper!

06-04-2005, 23:48	#12
WW_VRS Escorted Estate Join Date: Nov 2004 Location: Oxfordshire/Berkshire Posts: 9,736 Thanks: 44 Thanked 70 Times in 61 Posts	General concensus appears to be to give the turbo a little workout at least every once in a while I do try and keep mpg in mind on my daily commute as I cannot afford to be running at 20mpg - it's worth giving it a bit of revving to do at least once a week (noting you probably wanna do this with a properly warmed up engine). Normally I get stuck in a traffic jam at some stage, so I try to accelerate firmly when the traffic clears after that, and then let the engine idle for a bit before turning off the engine. Gets rid of the crap and gives the turbo the chance to cool down a little. __________________ WW --->> Project Journal (pic links in first post there) Lummox'/Ross thread on Unit18 Automotive progress on my car: here

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