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  What is causing our Yaris automatic to lurch on gear changes? 29 Jun 2013 (Ask HJ)
  We have a 2008 Toyota Yaris SR VVT Auto (1296cc). We soon noticed there was always a sudden power loss immediately after a gear change, causing a momentary...
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  Is my colleague being conned by her local dealer in having her Focus' gearbox replaced? 15 Jun 2013 (Ask HJ)
  Our editor's secretary seems to be getting shafted by her local Ford dealer. She paid £1400 for a new gearbox for her 1.6-litre, 2005 petrol Focus estate...
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  What caused the steering to lock and the ESP light to illuminate on our KIA cee'd? 6 Apr 2013 (Ask HJ)
  My wife has had a KIA cee’d diesel automatic for about two years without any trouble, but yesterday a strange and potentially dangerous thing happened....
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  Citroen Sensodrive problem 2 Jan 2013 (Ask HJ)
  I have a Citroen C2 (2003) with the Sensodrive gearbox and 60,000 miles on the clock. Recently the car has been sticking in gear and I receive the flashing...
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  Lexus hybrid failure 20 Apr 2011 (Ask HJ)
  I have a RX400h, 2007 with 94,000 miles. Owned the car from new, full dealer history. I had a fault coming up on the dash saying 'hybrid system failure'...
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  Can you help with my Peugeot 206's electrical fault? 6 Aug 2010 (Ask HJ)
  I have a 2002 Peugeot 206 1.4HDI. A couple of weeks ago the engine management light started flickering on and off, and the speedo and the rev counter will...
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  Why is my new Citroen C3 less fuel efficient than my old one? 4 Jun 2010 (Ask HJ)
  One year ago I part-exchanged a 2006 Citroen C3 for a new Citroen C3 1.6 HDi (April 2009) with the same engine. The previous 1.6 HDi engine gave me very...
• 02 nissan micra - immobiliser 20 Mar 2011 (Forum)
  can anyone tell me if immobiliser on 02 nissan micra is worked through the ecu or is it the box up behind heater motor type lot of problems or anyway to bypass the same not out to steal a banger not yet anyway haha 
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  Is it worth remapping the ECU in my car? 6 Oct 2023 (Ask HJ)
  Is it worth the cost of a remapping of the cars ECU on my BMW X1 2.0d?
• Peugeot 607 (2000 - ) - (2000-) 2.2 HDi, unable to clear ecu fault codes 21 Mar 2016 (Forum)
  so took it in to have the ECU cleared down again. Now the garage can't clear the errors and I am getting a headache, they have given me a list though! I have got P1447 - differential sensor pressure too high P1429 - differential pressure signal low (is there a right way around for the two pressure
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  Ford Focus warning light - what does it mean? 9 May 2015 (Ask HJ)
  I had a DPF delete done in 2013 on my Ford Focus diesel. All was well until late 2014 when the powertrain light came on. I had the ECU checked, but no...
• Peugeot 307CC - Water in the wiring? 29 Oct 2011 (Forum)
  . Diagnosis showed a faulty and leaky temp sensor. The dealership wanted us to have a wiring loom replaced as well as the sensor as water may have got into the loom and could get as far as the ECU. Before authorising the repair (£585 including the loom with a parts cost of £270+vat for the loom
• Ford Focus LX 1.6 TDCI MKII (07) - injector replacement recoding 6 May 2011 (Forum)
  Hi, Do you need to reprogram the ecu after replacing injectors on Focus MKII 1.6tdci when siemens injectors are used instead of ford? I have had some injector issues with my ford focus lx 1.6tdci. Initially my car developed a knocking noise and white and black smoke started
• Reanualt Clio 2 - Clio 2 2004 1.2 16v - Rough Running 15 Sep 2010 (Forum)
  Hope this helps someone, have a 2004 clio 1.2 16v which apart from a new clutch a few months ago has been faultless for its 82,000 mile life, serviced correctly by independant garage and started to run rough with engine light flashing on and off. Read all the posts about the ECU cover chomping
• Ford Mondeo II (1996 - 2000) - 00 1.8 Engine cut out - no spark ! 10 Dec 2009 (Forum)
  also checking continuity back to the ECU connector I?ve checked the feed to the coil (3 wire connector). With ignition on, its 12v on the centre cable and 0v on the outer ones. When cranking the centre cable drops to 9.5v but still nothing on the outer 2. So it looks like it isn?t getting a signal from
• Cost of spare parts - how long will the scam last? 23 Dec 2008 (Forum)
  which changes the resistance according to the position of the cable? Also if its anything like the one I removed from my old car it is a very simple job to replace. A 500gb hard drive now costs £40, these are quite complicated, a motherboard costs £40 and is very complex compared to an ECU which
• Renault Safrane (1992 - 2000) - 1995 2.2vi overfuelling/rough running on start 10 Nov 2008 (Forum)
  start perfectly OK, but more often the revs slowly creep up to 1000 to 1200 and the rough running gradually smooths as the revs increase over a period of about 4/5 minutes. I have fitted a new idle valve and coolant sensor and checked the ECU connections, but no improvement. There are a couple
• Tuning Diesel Methods (How ?)& Insurance 31 Aug 2006 (Forum)
  report on the BHP increase ? (B) What methods are used by the chipping Co's. I see some remap the existing ECU memory , others use an exra ECU, I presume this interecepts the engine management signal and modifies it somewhat. I know some power/torque increass are by increasing Turbo-Boost at lower
• Audi A4 - Multi-tronics gear box issues 9 Jun 2020 (Forum)
  has any experienced problems with their gear box. I have a  2018 plate 1.4 TFSI black edition s tronic and have been advised by my dealer that because I did not change the gear oil at the correct time/miles has caused a fault meaning a new main control gear box unit ECU is required
• Corsa Combo 2002 1.7 td (isuzu) - Vx combo,dashlights out,no start 10 Aug 2019 (Forum)
  Ive got a poblem with my dash electrics,having no "spanner" light,no EmL  no glowplug light  and nothing in the little mileage window/display.They were working until I remove the ecu atop the engine to gain access underneath.Does anyone know if the ecu needs resetting after unplugging