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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...
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  My Ford Focus won't start 18 Mar 2012 (Ask HJ)
  My Focus will not start at all and displays the error code P0251. Changed the fuel pump and a diesel specialist checked injectors. Confirmed in good condition....
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  Boxer shorts 23 Aug 2011 (Ask HJ)
  The GPS units (e.g. Garmin) which are fitted in private light aircraft are required to record their journey details so that, like the Black Box in commercial...
• Vauxhall Astra G Petrol - Vauxhall Astra 1.8 16v - Throttle Sensor & ECU.. 21 Aug 2011 (Forum)
  Hello guys, I need fast and honest help with my 2001 Vauxhall Astra MK4 1.8 16v. Symptoms include Engine Management light appearing. Slight reduced...
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  Aftermarket ECUs 8 Jun 2011 (Ask HJ)
  I have bought a Mitsubishi Shogun 4 Work, SWB, 3.2 DiD, 2005. So far it has been a great car, tows well, drives better than my Nissan pickup & has a boot...
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  Eco-tuning 26 Apr 2011 (Ask HJ)
  I have received a flier for an ECU-remapping service claiming to improve fuel consumption by up to 20% - www.ecu-remapping-service.com. It is not cheap,...
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  Why won't my Renault Megane turn over? 3 Jul 2010 (Ask HJ)
  My Renault Megane 1.5DCi won't turn over. It's had a new ECU and has been coded and still won't turn over. I press the brake and the clutch, and press...
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  What's causing my Renault Espace to rev between gear changes? 21 Jun 2010 (Ask HJ)
  My Renault Espace Series 3, 2-litre petrol 16v, T-reg has developed two faults. Firstly, on start up from cold the engine cooling fan kicks in. Also, on...
• Ford Focus (1998 - 2004) - 99 1.8 Alternator only lasting 3 months! 18 Jan 2010 (Forum)
  We have looked at earthing problems and discounted battery (new one) and are now looking at the "smart charge" system and ECU fault, even though ECU reader has indicated no faults. The things die in the same way, battery light comes on, battery puts out 12ish vaults under load and refuses to increase to any more than 12.4 vaults.
• Peugeot 306 (1993 - 2001) - 99 1.9HDi will not start 20 Dec 2009 (Forum)
  I took it to a peugeot dealer the diagnostics could not be accessed,they told me a new wiring loom + ecu MIGHT be required (cost £2400.00) When the engine cut out there was no engine mil light on the dash, yet the engine would turn over but would not start. Battery went flat, recharged, now engine mil light on dash, but still will not start.
• Daewoo Matiz (1998 - 2004) - 00 796 Ignition failure while driving 8 Jul 2009 (Forum)
  The last two were by the local Chevrolet dealer after a computer check. Now the local Chevrolet dealer says the computer wants me to replace the immobiliser ECU, cost £330. It seems likely that the parts they replaced are in working order (£95 to replace). My question is, am I being ripped off? What if replacing the ECU does not solve the problem? If a friend asked me to look at their computer because the screen wasn't working, I would not simply replace the monitor, signal lead and graphics card.
• Renault Clio II (2001 - 2007) - 01 1.2 juddering & weird ticking noise 27 Jan 2009 (Forum)
  Hi there, just recently bought a 2001 clio 1.2 16V, got it cheapish as it had immobiliser fault, anyway thought i was clever and managed to get a company to send me a ECU which has been demobilised to solve the problem, anyway starts alright now, but lots of weird things have been going on, i wonder whether they are connected to the new ECU or whether they were there already?
• FIAT Punto (1994 - 1999) - 97 1.1 Running problems. 25 Nov 2008 (Forum)
  All cleared off except for one "Battery Voltage" (No codes only a narrative) Battery voltage is not bad at 14.02 but battery voltage on live data varies between 8 and 15 volts. I've not physically measured the voltage at the ecu pin yet. The multi function relay has been replaced. My gut feeling is an ECU problem but am I right in thinking the immobiliser is integral with these? Its a Weber -Marelli 16F.EB. Incidentally he purchased the car with these problems
• Peugeot 306 (1993 - 2001) - 1999 2lt Hdi diesel that has starting problems 4 Apr 2008 (Forum)
  Have you found the solution to your problem as i haven't and now they are saying i have a hairline fracture on the motherboard in the ECU and want £340 + vat to fix. Seems a bit much to me and when i had it diognostically tested 2 weeks ago it came back with NO faults or codes???????????????? does anybody know if this is possible
• Toyota Yaris II/Vitz (2006 - ) - 07 - ecu light on again, despite 3 new cam sensors 16 Oct 2007 (Forum)
  We bought the wife,who is a driving instructor a brand new Yaris diesel 4 months ago.Within a week the engine management light showed up.We have now had...
• Renault Laguna 1.6 '99 ABS LIGHT 22 Jan 2006 (Forum)
  Its been back to the Garage , now three times, where when i get back it will be fine for a couple of days, and then play up again. They have replaced a sensor, reset the ECU, thankfully its not costing me anything, until the warranty runs out, annoyingly its always fine, when i take it to the garage. The garage is a independat garage who i trust completly as i have bought a few cars from, they took it to a specialist today, who again reset the ECU, went to pick it up , drove out the doors ......SERV and ABS Light came on, so i reversed it back in.
• Future collectible cars? 17 Mar 2002 (Forum)
  However, what about some of the other things to do with keeping the car running? Just consider: 1. All petrol cars made since 1993 have cats and ECUs. So do common rail diesels. 2. Most cars will have ABS brakes (ABS pumps and ECUs, again). 3. Most cars will have quite sophisticated immobilisers. 4. Over the last year or so we've seen the introduction of multiplex wiring.
• Hire Car Telematics Sends Killer Driver of Another Car to Jail for 5 Years 3 Months. 29 Jan 2017 (Forum)
  Perhaps it's time for all cars to have some kind of "Blackbox" within it's ecu for reading in the event of such carnage?. Could also trigger an alert to beacons regarding serious speeding offences.
• Ford Transit Connect 2005 - recorded mileage 8 Feb 2015 (Forum)
  Can anyone tell me if the current mileage on my van will show on a replacement used speedo,in other words,is it recorded in the vehicles brain(ecu)or will the replacement gauges unit show the actual mileage it had recorded on it,s original van,hope someone can help...thanks in advance if you can.