Tiger
Member
Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
User status: Offline
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Here’s a weird one for you, I’m new to modern diesels so could be quite normal.
Changed the battery on my 2007 Audi 2.0TDi, the engine was warm when I shut it off and changing the battery took me 20 minutes. When I started the car after changing the battery it was chucking out diesel smoke for fun for about the first mile then cleared. When I pulled back up at home it was burning cleaning as a whistle? Its not been a smokey car since I bought it and has been fine since.
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DaveyLC
Member
Registered: 8th Oct 08
Location: Berkshire
User status: Offline
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Why did you charge a battery for 20 minutes? It will receive more charge from the alternator running for 30 seconds.
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Tiger
Member
Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
User status: Offline
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I changed the battery....
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tom130691
Premium Member
Registered: 13th Sep 08
Location: Daventry
User status: Offline
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Id assume the ecu lost its data and had to recalibrate
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Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
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Complete guesswork but yes, does sound like it need to get its act together after losing the memory.
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Tiger
Member
Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
User status: Offline
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Update on this, from ages ago! Problem persisted and I also suffered from a hesitation on light acceleration too. Anyway, I had issues with the VAC controller which was replaced along with the inlet manifold and it cured the hesitation. The smoking remained anyway, mainly if I drove the car to its running temp then turned off the engine and started it an hour later. When at temp it was clean as a whistle. So now I’ve had the fuel filter changed and the DPF (which was 96% blocked) terracleaned. The DPF was blocked because of a faulty EGR valve which inhibits the DPF from regenning. Anyway, problems solved for now and the DPF has automatically regenned which it didn’t do before. Watch this space  got its MOT next month, if problem persists, the injectors will be coming out and go away for testing, then that’s the whole inlet side investigated!
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SetH
Member
Registered: 15th Jul 01
User status: Offline
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Thank you for the update, I have spent many months worrying about this 
Why was the inlet manifold changed? was in coked up?
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Tiger
Member
Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
User status: Offline
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The vac controller is part of the inlet manifold so you can’t swap just that part. I mainly wanted to update in case anyone else has a similar issue and ends up here.
Anyway, as it happens, it’s still not fixed the smoking issue
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Ste
Premium Member
Registered: 5th Mar 03
Location: Taif, Saudi Arabia
User status: Offline
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I have also spent the past year worried sick about your smoky engine battery change issue. Thanks for the update
I would rather lose by a mile because i built my own car, than win by an inch because someone else built it for me.
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SetH
Member
Registered: 15th Jul 01
User status: Offline
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Tiger
Member
Registered: 12th Jun 01
Location: Leicestershire Drives:Astra VXR
User status: Offline
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quote:
Originally posted by Ste
I have also spent the past year worried sick about your smoky engine battery change issue. Thanks for the update
That’s what I love about you Ste, along with your ginger hair, freckles, pot belly and pigeon toes, you’re a very considerate chap.
[Edited on 06-10-2018 by Tiger]
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