Help - Idle Stabilisation valve, ABC Engine

DGSdale · 04-07-17, 09:10 PM

Hello folks,
I've just ordered a new Idle Stabilisation Valve (part no. 078 133 455 D) for my 2.6 Cabriolet, ABC engine, year 2000. My question is, can I just bolt it in as received, connect the plug and of I go (with my fingers crossed in the hope that it will cure the 1100 - 1200 rpm Idle). The reason I ask is that Elsawin states: "After installation, ISV must be moved to basic position in 'Basic Settings' function". I do have VCDS (or a version of it) but am unsure how to do this and don't want to start messing without the knowledge. If anyone can help I would be very grateful.

Colin Aitchison · 04-07-17, 09:16 PM

Hi, What is your idle problem, dose the engine idle speed jump about - 1000 to 1200 to 1000 to 1200 rpm and so on when warm?

vorsprung durch technik · 04-07-17, 09:38 PM

Quote:

Originally Posted by DGSdale

Hello folks,
I've just ordered a new Idle Stabilisation Valve (part no. 078 133 455 D) for my 2.6 Cabriolet, ABC engine, year 2000. My question is, can I just bolt it in as received, connect the plug and of I go (with my fingers crossed in the hope that it will cure the 1100 - 1200 rpm Idle). The reason I ask is that Elsawin states: "After installation, ISV must be moved to basic position in 'Basic Settings' function". I do have VCDS (or a version of it) but am unsure how to do this and don't want to start messing without the knowledge. If anyone can help I would be very grateful.

It could be your problem but so could the coolant temperature sensor be messing with your rpms.

Here's a few pages i cut out of Car Mechanics mag years ago that highlighted the usual problems with these engines.

DGSdale · 04-07-17, 09:39 PM

It's an intermittent problem but getting more often than not. I have seen it drop quite low and back up a couple of times but most of the time it's at a steady 1200rpm. I've checked all that I can and I researched it a lot and I'm fairly confident it could be the ISV!

DGSdale · 04-07-17, 09:44 PM

Thanks VDT, I've read those pages (numerous times!) having printed them out from a previous time you posted them. I checked out the Coolant Temp Sensor and it appears to be exactly as it should with the resistance dropping with the increase in temp.

vorsprung durch technik · 04-07-17, 10:00 PM

Quote:

Originally Posted by DGSdale

Thanks VDT, I've read those pages (numerous times!) having printed them out from a previous time you posted them. I checked out the Coolant Temp Sensor and it appears to be exactly as it should with the resistance dropping with the increase in temp.

Ha,someone taking notice.

That's a good thing that you ruled that out then. I'm guessing the idle stabilizer valve is expensive from audi?

DGSdale · 04-07-17, 10:21 PM

It was obsoleted by mainstream Audi - so I'm told - on 1st April this year. Tradition have it but they are only listing the part no. without the D on the end. Apparently my chassis no. requires the D. I've ordered a VDO item that corresponds to the correct part no. from a factors for a few pence under £75. They can be had for a lot less but you pays yer money....

vorsprung durch technik · 04-07-17, 10:25 PM

Ok,thats not too bad a price i seams to remember when i asked Audi about this part years ago it was around £100.
Best of luck with it and let us know if she's purring again.

Flying Frank · 05-04-18, 09:43 PM

Hi, what was the final outcome / cure for the V6 ABC engine problem ?

DGSdale · 06-04-18, 06:26 AM

The ISV was replaced - quick and easy to do, it's only two socket cap head screws and one electrical connector although a ball ended Allen key is very useful and do use a new O ring - but it needs to be put in the basic position using VCDS. This is also very quick and easy - as long as you have VCDS and the adaptor leads! Once I'd done this the problem was sorted and the car idled and drove superbly. The old Valve that came out had a date sticker on it and was only about three years old.

04-07-17, 09:39 PM	#4
DGSdale Grown up member Classic Audi Club Member Join Date: Oct 2014 Location: Winchester, Hampshire Posts: 161	It's an intermittent problem but getting more often than not. I have seen it drop quite low and back up a couple of times but most of the time it's at a steady 1200rpm. I've checked all that I can and I researched it a lot and I'm fairly confident it could be the ISV! __________________ 2012 B8.5 [color="Red"]A4 2.0TFSI quattro Avant Black Edition - Lava Grey [color="Red"] - Current 2008 B7 S4 4.2 V8 Cabriolet - Moro Blue - Current 2005 B6 A4 3.0 Sport Cabriolet - Moro Blue - sold 2000 B4 80 2.6 Cabriolet Final Edition - Ming Blue - sold - & missed 2003 C5 A6 3.0 quattro Avant - Night Blue - current 1998 C5 A6 2.8 quattro Avant - Ming Blue - sold 1994 B4 80 2.6SE Avant - Indigo Pearl - sold - & missed 1993 B4 80 2.0 16V Sport - Gomera Green - sold Last edited by DGSdale; 04-07-17 at 09:51 PM.

04-07-17, 09:44 PM	#5
DGSdale Grown up member Classic Audi Club Member Join Date: Oct 2014 Location: Winchester, Hampshire Posts: 161	Thanks VDT, I've read those pages (numerous times!) having printed them out from a previous time you posted them. I checked out the Coolant Temp Sensor and it appears to be exactly as it should with the resistance dropping with the increase in temp. __________________ 2012 B8.5 [color="Red"]A4 2.0TFSI quattro Avant Black Edition - Lava Grey [color="Red"] - Current 2008 B7 S4 4.2 V8 Cabriolet - Moro Blue - Current 2005 B6 A4 3.0 Sport Cabriolet - Moro Blue - sold 2000 B4 80 2.6 Cabriolet Final Edition - Ming Blue - sold - & missed 2003 C5 A6 3.0 quattro Avant - Night Blue - current 1998 C5 A6 2.8 quattro Avant - Ming Blue - sold 1994 B4 80 2.6SE Avant - Indigo Pearl - sold - & missed 1993 B4 80 2.0 16V Sport - Gomera Green - sold

04-07-17, 10:21 PM	#7
DGSdale Grown up member Classic Audi Club Member Join Date: Oct 2014 Location: Winchester, Hampshire Posts: 161	It was obsoleted by mainstream Audi - so I'm told - on 1st April this year. Tradition have it but they are only listing the part no. without the D on the end. Apparently my chassis no. requires the D. I've ordered a VDO item that corresponds to the correct part no. from a factors for a few pence under £75. They can be had for a lot less but you pays yer money.... __________________ 2012 B8.5 [color="Red"]A4 2.0TFSI quattro Avant Black Edition - Lava Grey [color="Red"] - Current 2008 B7 S4 4.2 V8 Cabriolet - Moro Blue - Current 2005 B6 A4 3.0 Sport Cabriolet - Moro Blue - sold 2000 B4 80 2.6 Cabriolet Final Edition - Ming Blue - sold - & missed 2003 C5 A6 3.0 quattro Avant - Night Blue - current 1998 C5 A6 2.8 quattro Avant - Ming Blue - sold 1994 B4 80 2.6SE Avant - Indigo Pearl - sold - & missed 1993 B4 80 2.0 16V Sport - Gomera Green - sold

06-04-18, 06:26 AM	#10
DGSdale Grown up member Classic Audi Club Member Join Date: Oct 2014 Location: Winchester, Hampshire Posts: 161	The ISV was replaced - quick and easy to do, it's only two socket cap head screws and one electrical connector although a ball ended Allen key is very useful and do use a new O ring - but it needs to be put in the basic position using VCDS. This is also very quick and easy - as long as you have VCDS and the adaptor leads! Once I'd done this the problem was sorted and the car idled and drove superbly. The old Valve that came out had a date sticker on it and was only about three years old. __________________ 2012 B8.5 [color="Red"]A4 2.0TFSI quattro Avant Black Edition - Lava Grey [color="Red"] - Current 2008 B7 S4 4.2 V8 Cabriolet - Moro Blue - Current 2005 B6 A4 3.0 Sport Cabriolet - Moro Blue - sold 2000 B4 80 2.6 Cabriolet Final Edition - Ming Blue - sold - & missed 2003 C5 A6 3.0 quattro Avant - Night Blue - current 1998 C5 A6 2.8 quattro Avant - Ming Blue - sold 1994 B4 80 2.6SE Avant - Indigo Pearl - sold - & missed 1993 B4 80 2.0 16V Sport - Gomera Green - sold Last edited by DGSdale; 06-04-18 at 06:35 AM.

04-07-17, 09:16 PM	#2
Colin Aitchison Senior Member Classic Audi Club Member Join Date: Dec 2013 Location: Back home in Tillicoultry Posts: 1,308	Hi, What is your idle problem, dose the engine idle speed jump about - 1000 to 1200 to 1000 to 1200 rpm and so on when warm?

04-07-17, 10:25 PM	#8
vorsprung durch technik 4 ring whore! Classic Audi Club Member Join Date: Feb 2014 Location: Near Watford. Posts: 7,753	Ok,thats not too bad a price i seams to remember when i asked Audi about this part years ago it was around £100. Best of luck with it and let us know if she's purring again.

05-04-18, 09:43 PM	#9
Flying Frank 4 ring whore! Classic Audi Club Member Join Date: Dec 2012 Location: Kernow, Gods own county !! Posts: 2,388	Hi, what was the final outcome / cure for the V6 ABC engine problem ?