VW 1.8T trothel "idle Valve" discution

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Re: VW 1.8T trothel "idle Valve" discution

Postby jsmcortina » Tue Jul 16, 2013 11:16 am

Does anyone in the UK or Europe have one spare they want to send to me ?

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Re: VW 1.8T trothel "idle Valve" discution

Postby prof315 » Sun Jul 28, 2013 2:33 pm

jsmcortina wrote:Does anyone in the UK or Europe have one spare they want to send to me ?

James


I can probably come up with one James, if you can't find one elsewhere let me know.
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Re: VW 1.8T trothel "idle Valve" discution

Postby jsmcortina » Sun Jul 28, 2013 2:42 pm

Received one on Friday. I'll try to take a look at it this coming week.

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Re: VW 1.8T trothel "idle Valve" discution

Postby jsmcortina » Mon Jul 29, 2013 1:12 pm

The throttle is a somewhat complicated piece of kit with nice failsafes built in.

The motor can actually close the throttle from the "rest" position - does it actually ever do that, or is it opening only?

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Re: VW 1.8T trothel "idle Valve" discution

Postby piubrazil » Mon Jul 29, 2013 5:22 pm

Yes, the ECU can close the throttle plate in order to stall the engine, as I've told by a Bosch ECU mapper, in the case of a engine overtemp.
In the rest position, the engine idles at -+900rpm.
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Re: VW 1.8T trothel "idle Valve" discution

Postby prof315 » Tue Jul 30, 2013 6:28 am

jsmcortina wrote:The throttle is a somewhat complicated piece of kit with nice failsafes built in.

The motor can actually close the throttle from the "rest" position - does it actually ever do that, or is it opening only?

James


I'm currently only using from "rest" to fully closed as a work around. On my motor with a completely clean throttle body, cold idle without A/C on is about 1100-1200 rpms at the "rest" position. Hot this increases to 1300-1400rpms. With A/C on idle is 800-850 cold at rest 950-1100 hot. I have tried using the valve normally (rest is "closed" and open the blade with increasing PWM DC%) but the fact that TPS rises with it, going into closed loop can be hit or miss at best and rpms tend to be erratic (1200-4000rpms!)
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Re: VW 1.8T trothel "idle Valve" discution

Postby vlopsahl » Fri Aug 23, 2013 6:03 am

Any updates on this James? It would be best if MS could drive it directly, but a driverbox would also be useful. It could potentially be used with other standalone.

Thanks
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Re: VW 1.8T trothel "idle Valve" discution

Postby lotus23C » Sat Aug 24, 2013 12:05 am

I'd be pretty keen on a PCB / Kit for this.
Currently Lotus 23C replica Audi 1.8T MS 2 v3 Sequential COP and ignition.
Lotus 7 replica 4age 20V blacktop MS2 v3
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Re: VW 1.8T trothel "idle Valve" discution

Postby pac1085 » Thu Aug 29, 2013 7:53 am

I too would be interested in a controller for this.
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Re: VW 1.8T trothel "idle Valve" discution

Postby jsmcortina » Thu Aug 29, 2013 8:04 am

I've had a look and was thinking about working on an extension to what's already been posted that could also be used to control non-spring loaded bike secondary throttles.

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Re: VW 1.8T trothel "idle Valve" discution

Postby eMTea » Thu Sep 12, 2013 11:08 am

I would also love a possibility to control the idle :)
-MS3X, (V3 PCB) 1.2 RC 1 firmware. Controlling a light modified Audi 1.8TQ AEB 20v engine with Holset HE221W turbo, 299.4 HP and 400Nm at the hubs in Dynapack.
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Re: VW 1.8T trothel "idle Valve" discution

Postby eMTea » Thu Jan 16, 2014 5:09 am

Any news?
-MS3X, (V3 PCB) 1.2 RC 1 firmware. Controlling a light modified Audi 1.8TQ AEB 20v engine with Holset HE221W turbo, 299.4 HP and 400Nm at the hubs in Dynapack.
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Re: VW 1.8T trothel "idle Valve" discution

Postby jsmcortina » Thu Jan 16, 2014 8:25 am

A servo controller like piubrazil posted is what's needed to control this idle valve correctly.

James
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Re: VW 1.8T trothel "idle Valve" discution

Postby lupo4mot » Thu Mar 16, 2017 11:35 pm

Back to Top with this Old Thread.

i search a lot here to found a Way to Controll the Idle System of the VR6 OBD2 / ABA Throttle. I read that someone Switch the Cables and Run inverted or with a Extra H-Bridge Board. My Question is what is the Best Solution for it and have anyone a Schematic of the Board. Find this old Thread about it but with no End.

Thanks for all Help.
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Re: VW 1.8T trothel "idle Valve" discution

Postby Paul_VR6 » Sat Mar 18, 2017 10:01 am

It can be made to work "ok" by inverting it. There are a few of us that have been using it that way. The control board schematics are lost atm, no one seems to have saved it.
-Paul
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Re: VW 1.8T trothel

Postby lupo4mot » Sun Mar 19, 2017 3:19 am

Paul_VR6 wrote:It can be made to work "ok" by inverting it. There are a few of us that have been using it that way. The control board schematics are lost atm, no one seems to have saved it.


Inverted Mode dont work for me. Switch the Cables and the Idle Control is not Adjustable. Run MS2 and tested all PWM HZ Settings. I Think the Only Way is a H Bridge.
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Re: VW 1.8T trothel "idle Valve" discution

Postby Paul_VR6 » Sun Mar 19, 2017 5:05 am

Do you get any movement? These throttles are prone to sticking from pcv engine oil. Probably worth a good cleaning.
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Re: VW 1.8T trothel "idle Valve" discution

Postby lupo4mot » Sun Mar 19, 2017 5:16 am

It moves but the adjustment is the Problem. Throttle open is not the problem but to close it need higher percentage jumps. For example I can open it in 5% steps but to close it need 20% for 3-5% throttle.
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Re: VW 1.8T trothel "idle Valve" discution

Postby Paul_VR6 » Sun Mar 19, 2017 10:21 am

With it set up this way you can only move it on the open side, not closed. Generally this gives a 900rpm hot idle on a vr6 which is fine.
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Re: VW 1.8T trothel "idle Valve" discution

Postby lupo4mot » Sun Mar 19, 2017 10:43 pm

Ok. But for me this is not Adjustable. I think the best way is to Drive it with a Servocontroller. No one have done this here ??
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