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  I changed the battery in my 1994 Mazda MX-5 and now it won't start - what could be wrong? 17 Feb 2017 (Ask HJ)
  I recently fitted a new battery on my 1994 Mazda MX-5 after making a few small journeys and it started with no problem. I returned home and within half...
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  Dashboard symbol for DPF regeneration? 28 Jul 2016 (Ask HJ)
  Is it possible to retro fit my 2011 Ford Kuga 2.0TDCI with a dashboard symbol that will warn me when the ECU triggers a DPF regeneration, so that I know...
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  What's the downside to re-mapping a car? 3 Dec 2013 (Ask HJ)
  I am thinking of re-mapping my Jaguar XF 3.0D diesel. I've been told that the torque will increase from 369 to 449 lb ft, with an associated increase in...
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  DPF issues with my Jetta on St Helena? 27 May 2013 (Ask HJ)
  I had my car - a Volkswagen Jetta 1.9TDI DPF - transported to St Helena and now it never exceeds 30mph. Following short trips the light on dash has come...
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  What do these Vauxhall Vectra fault codes mean? 24 Mar 2013 (Ask HJ)
  I have fault codes u2105 (no comms with ECU) and u2139 (no comms with steering column). Any advice on locating the actual problem, as it needs resolving...
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  Car won't start sometimes and is full of condensation. 10 Sep 2012 (Ask HJ)
  Have left the car only twice for 7 & 5 days and it failed to start both times , been checked out by Volkswagon who can't identify any problem. Also have...
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  Why won't my Nissan Navara start? 17 Jul 2010 (Ask HJ)
  My Nissan Navara's engine is turning over, but not starting. The alarm light on the dashboard does not go out and the central locking isn't working on...
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  Ghost story 15 May 2010 (Ask HJ)
  After locking my Bora the car unlocks itself and all the windows automatically open, with lots of switch clicking and hazards going on and off. This can...
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  Vauxhall Zafira cutting out - how to get fault codes? 4 Jan 2012 (Ask HJ)
  I have a Vauxhall Zafira 2000yr. A few weeks ago I was driving and the car cut out, stereo and lights work ( ruling out battery ) but the windows wouldnt...
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  Can you disable keyless entry on a 2014 Ford Mondeo? 15 Jan 2024 (Ask HJ)
  Can I enable / disable keyless entry on 2014 Mondeo? All answers seem to apply to Focus and Fiesta. Help!
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  Should Volkswagen replace my Golf's faulty EGR valves? 5 Dec 2016 (Ask HJ)
  I have a 2010 Volkswagen Golf 1.6 diesel DSG and the EGR valves need replacing. Is this something I should try to claim is caused by the emissions problems...
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  Audi TT won't unlock with key fob 5 Oct 2016 (Ask HJ)
  I've just bought a 2002 Audi TT convertible. I went to get in it today and discovered that it wouldn't unlock with the key fob. The roof and windows have...
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  Ford Fiesta ABS warning light on 16 Sep 2016 (Ask HJ)
  My Ford Fiesta ABS warning light is on. My local garage say they can't repair because it has to be done by Ford. Ford say that it will cost £144 for diagnostics...
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  Ford Galaxy engine warning light 28 Aug 2016 (Ask HJ)
  I have a 2011 Ford Galaxy 2.0 diesel auto. Last night the engine malfunction warning came up, but the car drove fine with no loss of power. I turned the...
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  Ford C-MAX 1.8 TDCI cutting out 21 Jul 2016 (Ask HJ)
  Our 2009 Ford C-MAX 1.8 TDCI cut out last week. All power failed and the engine malfunction light was on. After switching the car on and off, it restarted....
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  Volkswagen emissions scandal - is the Polo affected? 11 Oct 2015 (Ask HJ)
  I've got a late 2011 Polo 1.2 TDI and having just checked my VIN it looks like these engines are also a part of the scandal. Could you update your listing...
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  Overheating 2001 Astra - what's wrong? 2 Jul 2014 (Ask HJ)
  I have a 2001 Vauxhall Astra 1.6 8v. I have had a few problems, all now sorted, but since I've had the ECU fixed I now seem to be running hot. The coolant...
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  Why does my BMW unlock itself? 15 Jun 2014 (Ask HJ)
  I have had a 2011 BMW X1 for six months. In that time on three occasions I have found the car unlocked and all four electric windows open. Fortunately...
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  Problematic automatic transmission 25 Jul 2012 (Ask HJ)
  Car transmission working well from P to other gears but after using the brakes car the car won't change from D or R and won't 'creep' unless I step on...
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  Zafira electrical problems 5 Apr 2012 (Ask HJ)
  The electrics on my Zafira were playing up. The lights stayed on with no display on the dash. Started OK but now when I turn the key nothing at all works...