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  DRLs on a Volvo V70 12 Oct 2015 (Ask HJ)
  I would like to attach third party DRL lights to my V70. The automatic wiring loombs you can buy seem an easy option along with dimming options. I have...
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  Can I run 87 or 89 octane fuel in my Mazda CX-7? 24 Aug 2013 (Ask HJ)
  We recently purchased a low mileage Mazda CX-7 as a second car. The 244HP 2.3-litre turbo engine is very thirsty and the manual calls for 91 octane fuel....
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  Broken LED running light on an Audi and no one can help. Any advice? 1 Nov 2012 (Ask HJ)
  I own an Audi A5 2007 with front eyelash style daytime running LED units, seven or eight LEDs within each unit. One single LED within the offside passenger...
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  Can I replace Castrol Valvemaster with Miller's VSP Power Plus in my 1967 Triumph 2000? 25 Aug 2012 (Ask HJ)
  I run my 1960 Standard Vanguard using Miller’s VSP Power Plus as a lead replacement additive. I have now acquired a 1967 Triumph 2000 which has been run...
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  SEAT Exeo ST 6 Apr 2012 (Ask HJ)
  My seat exeo st is just 2 years old.Recently the climate control stopped giving out any cold air and also gave a terrible smell. The main dealer I bought...
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  My Mazda 323 will not run - what's wrong with it? 27 Aug 2010 (Ask HJ)
  This afternoon my X-reg 1.4-litre Mazda 323 died. The engine starts but will not run, it's as if the ignition is being switched off. I'm guessing there...
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  Can I disconnect the EGR valve in my 1999 Vauxhall Vectra? 20 Jul 2010 (Ask HJ)
  I have a 1999 1.8 Vauxhall Vectra and I've been having problems with it since we got it. After spending around £160 on replacing some parts, I think its...
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  Should I really run my Citroen C5 diesel to 4500rpm several times a week? 29 Jun 2010 (Ask HJ)
  I note your advice to hit 4500 rpm through the gears several times a week. Does this apply to all engines? At only 4000 rpm in my 2008 Citroen C5 2.0HDI...
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  Big banger theory 6 Feb 2010 (Ask HJ)
  I have about £800 to spend on a family car for two adults and two kids. What would you recommend? I have seen a 1999 Vauxhall Vectra 2.0DI turbodiesel,...
• lean and pinking toyota 10 May 2003 (Forum)
  When the car reaches normal operating temperature it begins to run lean and pinks very loudly. The temperature does not rise but the pinking gets worse, so bad that the car will not tick over and can even cut out between gear changes if I am a little slow changing up or down. While the car
• maybe a Toyota Yaris? - Need a little run around car 7 Sep 2021 (Forum)
  Hi Honest John team! I am after a little run around car to get me to work and back and to the shops,short journeys mainly with perhaps the odd long one thrown in. I want something reliable,cheap to run and quite safe with cheap parts if possible! was hoping it to be no more
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  Best used family car for £7000? 17 Feb 2020 (Ask HJ)
  Can you recommend a petrol used car (circa £7000) that has low running costs but is large enough to fit two child seats in the back plus a double stroller...
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  Why does my car continue to run even when the key is removed from the ignition? 10 Dec 2019 (Ask HJ)
  I have a Ford Escort 1.8 TD but the ignition lights are on even when the key is not inserted. It goes out if the brake pedal is depressed. The engine continues...
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  Are engine revs raised during DPF regeneration? 30 Jul 2019 (Ask HJ)
  Are engine revs raised during DPF regeneration on a Nissan Qashqai?
• Golf tdi 2009 1.6 - Injector problem 12 Jun 2017 (Forum)
  (just in case), pressure valve replaced on rail. It is running but 'lumpy' in idle. No fault codes are showing and car apparently thinks it is running ok. Mechanics cannot tell me what is wrong and seem to say it needs emission reprogramming even though it has run for 3 months and about 1000 miles since
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  Is supermarket diesel as good as BP? 3 Sep 2016 (Ask HJ)
  I run my Toyota Auris 1.6D on Sainsbury's diesel for two tanks and then two tanks of BP Ultimate. The car runs very well on both brands of fuel. I have...
• N/A - School Run Traffic 15 Oct 2015 (Forum)
  School Run Traffic I have been giving a friend a lift to work once a week since the council cut their support for local bus services resulting in reduced services. Fortunately this is the only day they have this particular start time (walking or cycling is not an option as they are waiting
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  BMW won't heat up on short runs 15 Mar 2015 (Ask HJ)
  My 2004 BMW 320d Estate is cold and refuses to blow hot air on short runs. I know diesels heat the engine first but is there any way I can get the cabin...
• Renault Kangoo 1.9D 2001 - Very rough running - Injectors? EGR Valve? Help!!! 21 Jan 2015 (Forum)
  When I bought this vehicle back last summer it would often run rough on idle as if it was 'misfiring' or was a petrol engine with a plug lead removed. I have lived with the problem but its got
• Renault Kangoo 1.9D 2000/Y reg - Really Rough Running - Injector(s) faulty?? 21 Jan 2015 (Forum)
  When I bought this vehicle back last summer it would offen run rough on idle as if it was 'misfiring' or was a petrol engine with a plug lead removed. I have lived with the problem but its got a lot worse recently and in 'kangarooing' even when driving normally which it has never done before