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  Are vans included in the Volkswagen emissions scandal? 25 Sep 2015 (Ask HJ)
  I see Volkswagen says that the emissions problems are now affecting cars in Europe. I have a VW Caddy Maxi 2.0-litre TDI 2012 model is this the engines...
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  Ongoing issues with a Vauxhall Corsa that dealer can't solve? 2 Dec 2015 (Ask HJ)
  I had my Vauxhall Corsa in a main dealer because of intermittent starting problems. The first time it said the glow plugs were faulty and a new fuel filter...
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  2016 Astra K SRI Sports Tourer: preservation of ECU life 18 Nov 2016 (Ask HJ)
  When I picked up my new Mazda, some years ago, I was told that to start the car you should first turn on the ignition to its second position. Then you...
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  How is the EGR valve activated in my Renault Kangoo? 18 Aug 2010 (Ask HJ)
  My 1.9 2003 Renault Kangoo diesel hesitates at idle speed and produces excessive smoke. I removed the EGR plug and its now working fine. Which sensor gives...
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  How do I reset the window ECU on a Peugeot 807? 18 Aug 2014 (Ask HJ)
  I have just fitted a replacement window in the rear sliding door of my 2006 Peugeot 807. Now the window does go right to top but then comes down again...
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  Faulty injectors have damaged the engine - should the dealer pay for repairs? 21 Nov 2014 (Ask HJ)
  My nephew purchased a 2010 SEAT Leon 1.6CR TDI recently and a fault was found within the ECU, which was sending the wrong signal and resulted in damaging...
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  ABS light on a Peugeot 207 29 Jun 2012 (Ask HJ)
  I have a 2007 Peugeot 207 1.4 Petrol with 17,ooo miles. I have a fault light on saying fault with ABS. Diognostics check revealed ABS ECU fault. Have checked...
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  Chip shock 5 Jun 2010 (Ask HJ)
  I got my Peugeot 406 2.2 diesel coupe ECU remapped in October. It didn’t run very well at all until I cleaned all filters. Now she will run 100% for about...
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  What maybe the fault when connecting the battery terminals wrong way round 8 Jan 2013 (Ask HJ)
  We have a 2002 Peugeot 307 Rapier. It had been running fine but finally a day came when it started showing up anti-pollution fault. We got it checked but...
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  How can I fix the issue with the MAF sensor? 3 Jul 2024 (Ask HJ)
  When the air mass sensor on my car is plugged in, it drives terribly, goes into limp mode before 3000rpm. When the sensor is unplugged it drives okay....
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  Thanks for recommending ECU Testing for an ABS pump repair on my Jaguar XKR. 21 Dec 2013 (Ask HJ)
  Thank you for your recent pointer to ECU Testing (www.ecutesting.com) to fix my Jaguar XKR ABS pump circuit. My total outlay for the repair, carriage and...
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  Remapping ECU 6 Nov 2011 (Ask HJ)
  I am an OAP and the ever increasing cost of fuel is a concern to me. I have read various articles on ECU re-mapping devices, all of which claim to enhance...
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  Can an aftermarket ECU cause DMF failure? 22 Oct 2014 (Ask HJ)
  I own a 2010 SEAT Alhambra, which has suffered a dual mass flywheel failure. The car has covered less than 35,000 miles and has a full service history....
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  Why does the engine cut out on my Astra? 13 Aug 2014 (Ask HJ)
  My 1998 Vauxhall Astra keeps cutting out. After stalling I can hear the fuel pump running. Wen switching the ignition off and then on again, the fuel pump...
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  Mercedes won't refund my repair bill for a breakdown abroad - where do I stand? 21 Jul 2017 (Ask HJ)
  My 2014 Hymer B 585 Starlight motorhome (based on a Mercedes-Benz Sprinter) recently broke down while I was in Ireland. I was recovered to an authorised...
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  Chipping a Ford Ranger 3.2 diesel 20 Nov 2014 (Ask HJ)
  The vehicle is in Thailand. Tempted to use Superchips bluefin modification claimed to increase torque by 117 nm from 417nm and power by 45hp from 197hp. Apparently...
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  Diesel pump failure on a SAAB 9-3 2 Jan 2012 (Ask HJ)
  I am new to your website that came recommended from a friend. I own a Saab 93 2.2 TID and i have been having issues with the car over the last week....
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  Peugeot 3008 ECU replacement delay - is this a common issue? 3 May 2022 (Ask HJ)
  Is it unusual to have to wait over six weeks for a replacement ECU ordered via a main dealer? They don't seem to be able to give me a delivery date so...
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  Under new management 12 Mar 2010 (Ask HJ)
  I have a 2005 Toyota Corolla T2 D-4D with 61,000 miles. The engine management system recently failed and I was quoted £1,060 to replace it by my local...
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  Groaning brakes 3 Jul 2015 (Ask HJ)
  I have a Nissan Almera Tino 2.0 litre 2002 with a faulty ABS ECU. It does not affect the driving, confirmed by the local garage but when travelling slowly...