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D4 - Axles, Brakes, Suspension and Steering Brakes, Springs, shocks, steering racks, steering columns, suspension arms, wheel hubs etc.

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  #11  
Old 22nd April 2024, 09:36 AM
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Quote:
Originally Posted by manca View Post
Confirmed the revised part number is discontinued so if my servo needs replacing Audi wont be doing it.
That is absolutely crazy. Produce a part for 5 years and then stop! I can find a few sites in the US that have it, but none in the UK or Europe. If you need to source one from the US, I'd go with FCP Euro as they have a lifetime warranty.

Dean (Spanker) is good at finding German sites with stock.
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  #12  
Old 22nd April 2024, 03:40 PM
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Thanks for the info again steamship. Yep just had a call from the dealer. They don't know what the issue is, there are no fault codes, the car is reporting no issues. So I'm not sure where I go next. They say they can start stripping it down at 222 an hour labour and see what they find. Obviously if they get to the servo they won't repair it and then I can pay them to put it back together and go somewhere else to get it fixed..... not.

Losing the will if I'm honest
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2010 D4 4.2tdi. phantom Black Pearl Effect. Night vision assistance with pedestrian detection. Parking aid plus. Audi pre-sense plus. Adaptive cruise control. Audi side assist. Bluetooth privacy handset. Mobile telephone preparation - High with Audi connect. CD/DVD changer. Bose surround-sound system. Through load facility. Homelink garage door opener. Advanced Key. Deluxe 4 zone climate control with rear comfort centre armrest. Adaptive Headlight with high beam assist. Electric sun blinds for rear window and rear door windows. Heated outer rear seats. Comfort seats with memory function. Extended leather pack 1. 21 inch Rotor alloys.
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  #13  
Old 22nd April 2024, 05:25 PM
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ainarssems back in post #2 hinted at a possible vacuum leak. Do you know if they investigated that possibility?

Looking at the 4.2tdi, there is a vacuum pipe (#2 & 3 in the first image) with a non-return valve from the brake reservoir to the mechanical vacuum pump. Cars that have stop/start have a pressure sensor on them (PR code: 7L8).

There is also the vacuum pump itself (second image), although I can't find a decent image of where it is located on your engine. The following video shows what it looks like, but this was on a FSI engine. It might be worth checking those areas for vacuum leaks.

https://www.youtube.com/watch?v=EvfFk3ZJP6o
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2001 A8 D2 FL 3.7 Q - LPG Conversion, Engine: AKC, Gearbox:FBB, Colour:LY5X Aqua Blue pearl effect, Interior:WJ light beige/dark beige valcona leather with burr walnut inserts

My DIY jobs - Replaced alarm horn, Replaced Coolant Temp sensor, Updated RNS-D firmware, Installed Reversing Camera and Digital TV, Dashcam Installation, Retrofitted Rear Blinds, Auto-Dimming Rear View Mirror, Chrome Boot Struts

Sold! 2008 S8 D3 5.2 V10 - Engine: BSM, Gearbox:KLW, Colour:LY7F Suzuka Grey Pearl Effect, Interior:Black/Black with Silver/Black valcona leather with carbon atlas inserts, Bang & Olufsen, Heated windscreen, Soft-close doors, TV, DAB, AMI, Quad Zone, Auto Boot, Auto dim Mirrors, Keyless entry, PDC with rearview camera, AFS II Headlights

My DIY jobs - Fan Jet Windscreen Washers, Retrofitted Electric Side Blinds
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  #14  
Old 22nd April 2024, 09:04 PM
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Typed out a rambling response Sean but it didn't post then I couldn't log in.
Anyway more concise than the original.....

Thank you for the info above.
I suspect the Main Dealer simply plugged the car in to diagnostics and then phoned me and told me they didn't know what the issue was.
The Indies Master Tech last month told me they checked the vacuum and although there was no manufacturer specification for the measure on early cars the draw seemed in line with cars that are operating normally. He said when he exhausted the pressure the servo was then slow to react.
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  #15  
Old 23rd April 2024, 08:50 AM
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Off to retrieve my car now.

I've booked it in with Audivwcs in Harrow. Was introduced to them years ago by Marcin when I had my D3 but haven't been back since I moved. They were great back then so fingers crossed
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  #16  
Old 26th April 2024, 09:17 AM
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Car into Audivwcs yesterday afternoon. Problem diagnosed and explained this morning.

As suggested on this thread the smoking gun isnt the NLA servo. I need a new water pump. It has leaked coolant into a vacuum pipe. They could see the pink crystals partially blocking the pipe. Cleaned the pipe out and all operates as normal. Water pump on order and car back on Monday. They said they've never seen it before and it took some working out, hence they didn't get back to me yesterday as intended. I appreciate everyone's input thank you
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2010 D4 4.2tdi. phantom Black Pearl Effect. Night vision assistance with pedestrian detection. Parking aid plus. Audi pre-sense plus. Adaptive cruise control. Audi side assist. Bluetooth privacy handset. Mobile telephone preparation - High with Audi connect. CD/DVD changer. Bose surround-sound system. Through load facility. Homelink garage door opener. Advanced Key. Deluxe 4 zone climate control with rear comfort centre armrest. Adaptive Headlight with high beam assist. Electric sun blinds for rear window and rear door windows. Heated outer rear seats. Comfort seats with memory function. Extended leather pack 1. 21 inch Rotor alloys.
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  #17  
Old 26th April 2024, 06:04 PM
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Quote:
Originally Posted by manca View Post
I need a new water pump. It has leaked coolant into a vacuum pipe. They could see the pink crystals partially blocking the pipe. Cleaned the pipe out and all operates as normal.
Well that particular scenario wasn't expected, but great that they found it.
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2001 A8 D2 FL 3.7 Q - LPG Conversion, Engine: AKC, Gearbox:FBB, Colour:LY5X Aqua Blue pearl effect, Interior:WJ light beige/dark beige valcona leather with burr walnut inserts

My DIY jobs - Replaced alarm horn, Replaced Coolant Temp sensor, Updated RNS-D firmware, Installed Reversing Camera and Digital TV, Dashcam Installation, Retrofitted Rear Blinds, Auto-Dimming Rear View Mirror, Chrome Boot Struts

Sold! 2008 S8 D3 5.2 V10 - Engine: BSM, Gearbox:KLW, Colour:LY7F Suzuka Grey Pearl Effect, Interior:Black/Black with Silver/Black valcona leather with carbon atlas inserts, Bang & Olufsen, Heated windscreen, Soft-close doors, TV, DAB, AMI, Quad Zone, Auto Boot, Auto dim Mirrors, Keyless entry, PDC with rearview camera, AFS II Headlights

My DIY jobs - Fan Jet Windscreen Washers, Retrofitted Electric Side Blinds
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