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  Radiator Fan continues running after engine shutdown 24 Dec 2013 (Ask HJ)
  The radiator fan continues to run indefinitely after the engine has shutdown even in winter temperatures. Also, the batttery discharges after a period...
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  Are run flat tyres a good idea? 4 Aug 2011 (Ask HJ)
  I am looking to order a new BMW X3 2.0d SE. Would you recommend run-flat tyres?
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  Iveco van running on after turned off, then wont start. Any ideas? 12 Apr 2013 (Ask HJ)
  My Iveco van continues running after the ignition is turned off, then doesn't turn over. Does start OK sometimes, but sometimes wont start at all. Ignition...
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  Run flats - I want to move on 8 Jan 2013 (Ask HJ)
  I am thinking of getting rid of my run flat tyres shortly. I have purchased a BMW space saver kit, and checked if it fits ok which it does, I didn't fancy...
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  Tricky to start my 407 Coupe 5 Aug 2012 (Ask HJ)
  Just bought a June 2007 Peugeot 407 Coupe 2.7 Hdi Automatic with 42,000 miles. Love the car & ran perfectly driving it home (200 miles journey). Now, it...
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  Should my Vauxhall Vectra's cooling fan be running all the time? 2 Aug 2010 (Ask HJ)
  I have a Vauxhall Vectra 2-litre diesel. Can you tell me if the front fan on the radiator is supposed to be running constantly, as my temperature is running...
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  What are the pitfalls of buying a used hybrid? 29 Mar 2015 (Ask HJ)
  My mother is looking to buy a Toyota Auris 1.8 VVTi Hybrid T4 CVT Auto (2011 model) with 43,000 miles on the clock. What are the pros and cons of a hybrid...
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  Tyres changed for none-runflats on a BMW 23 Feb 2013 (Ask HJ)
  I have just purchase a used BMW 318i SE from a non BMW Franchised Dealer. When I test drove the car is had Bridgestone Potenza Run-Flat tyres all round....
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  Coolant fan always running on my Focus 6 May 2012 (Ask HJ)
  The coolant fan on my car always runs even after a 10 minute drive.. It also runs after I have turned the ignition off for about 1 minute. Although...
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  My Saab 9-5 has started to run very rough - what's wrong with it? 4 Jul 2010 (Ask HJ)
  I have an '04 plate Saab 95 2.2 turbo diesel that has started to run very rough. It has 55,000 miles on the clock and was serviced at 50,000. It starts...
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  Car runs better with less fuel 4 Sep 2012 (Ask HJ)
  My 1996 VW Polo 1.0 runs better with less fuel in the tank - any reasons for this?
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  Daytime running lights - needed? 6 Jul 2014 (Ask HJ)
  I've just bought a new Skoda Octavia 1.4 TSI estate. Should I use the (non bi-xenon) daytime running lights or not (they are a menu option)? Pros and cons...
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  What run flats are quietest? 14 Feb 2013 (Ask HJ)
  I will soon need to change the tyres on my BMW 530d. It is currently fitted with Bridgestone Potenza 225x50 on 17inch rims. The tyres are fairly noisy...
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  Winter tyres 23 Nov 2012 (Ask HJ)
  My new BMW 3-Series has R18 run-flat tyres fitted as standard. BMW offers R17 run-flat winter tyres and wheels; would that be better than an independent...
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  Is the idle speed on my Vauxhall Vectra set too low? 18 Aug 2010 (Ask HJ)
  i recently bought a 98 plate 2.5 Vauxhall Vectra but it runs really rough on idle and I think the idle speed is too low. Can anyone help with a diagnosis?
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  High driving position, low running costs 16 Feb 2013 (Ask HJ)
  Still driving a Yaris D4D 52 plate. My husband still would like something bigger. I like a higher driving position and low running costs, and ultra reliable.......
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  Volkswagen Passat CC V6 coolant pump failure 11 Sep 2014 (Ask HJ)
  I have a 2011 Volkswagen Passat CC 3.6 V6 and the V55 additional coolant pump is not running (aux pump) which should run when the engine is switched off...
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  What fuel grade should I run my Toyota Celica on? 25 Jun 2018 (Ask HJ)
  I have a 1992 generation 5 Celica Convertible imported from Japan many years ago. I notice that when driving up an incline it seems to 'pink'. I have not...
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  Replacing run-flats 27 Jul 2011 (Ask HJ)
  My 2009 320SE Coupe, which is on run flats, is causing a problem. The warning light comes on every few weeks to indicate a loss of pressure. Each time...
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  Can I buy all-season run-flat tyres? 27 Oct 2020 (Ask HJ)
  I would like to purchase some run-flat all-season tyres in size 225/45 R18. Do they exist?