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• Vauxhal Vectra B - X18XE Missfire (no EML) 7 Sep 2011 (Forum)
  on? So... I started off by checking the engine grounds,ECU ground and basically any i could find (they where cleaned and checked) next i was told that the alt overcharging can do odd things so i tested that (14.4v at 3000 rpm which i believe is ok), i thought that maybe the oil fault had returned so i
• Vauxhall Corsa C (2000 - 2006) - 04 CDTi Easytronics gearbox problems 17 Sep 2009 (Forum)
  solve the problem as well as a couple of recall mods. I go to collect the car and it stops again 100meters up the road. They recover it and tell me it needs a new engine ECU at £600 plus and after fitting that they may be able to find the other fault. Having lost faith I have removed the car to my local
• Rover 400 (1995 - 1999) - 1998. 416 model - heating issues 15 Jan 2008 (Forum)
  shoud i unplug battery or ecu to reset codes before i go to him or leave as same? i am poor single parent willing to do as directed to check or do work as to try to reduce the mechanics bill, but appeciate quality costs!!!! please help !!! Thanks in advance dazrover
• Dealers fighting back against BER 22 Aug 2007 (Forum)
  . I gather a number of other dealers are about to take this sort of approach. We have also heard that some manufacturers are introducing very expensive tools to reset service indicators that connect back to the factory. The car's ECU incorporates software so that the service indicator cannot
• Spanner-How to survive your local garage 6 Oct 2002 (Forum)
  to 'twiddle' is to change the resistance of the sensors for a given temperature. Are you implying that those involved in sharp practice go to the trouble of adding resistors to the circuit, thereby fooling the climate ECU into thinking it is seeing lower temperatures than it really is? What about those
• 
  Singing the praises of the Tesla S 4 Feb 2015 (Ask HJ)
  You are the only motoring journalist I like (except for L J K Setright, who is unfortunately dead). You tell it how it is. I have now done quite a few...
• 
  Yeti 'Engine Fault' warning 16 Oct 2012 (Ask HJ)
  We love our two year old Yeti 4x4 diesel (or at least we did). A couple of weeks ago after a couple of hours at a steady 70mph on the A1 the glow plug...
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  Courting disaster 25 Jul 2009 (Ask HJ)
  Regarding the email from CL and his speeding offence in Cumbria. If CL is determined to pursue this, although he has asked for a court hearing, he will...
• Peugeot 5008 1.2 PureTech - Issues After Safety Recall Check 4 Nov 2023 (Forum)
  in the ECU. Perrys suggested a partial engine strip for further investigation, estimating two hours of work, all at the same hourly rate.   Concerns: Immediate Fault after Check: The serious fault appeared only a day after the recall check. This raises doubts about
• Honda CR-V CDTi - Crank, No Start 25 Jun 2020 (Forum)
  it’d be the battery as the crank is strong, likewise all electrics fine except these few pre ignition lights. I’m suspecting relay, sensor, or main ECU? I was hoping someone might know more about the electronics surrounding the ignition system. my current suspicion is the main relay
• ANY - Helping Conscientious Drivers Avoid Speeding Fines 31 Jan 2020 (Forum)
  extra lines of code in the ECU – properly validated and tested before release of course! I imagine that this simple modification will not be widely implemented until there is sufficient public demand for it. What does the HJ Forum think of this PLEA?  
• Mitsubishi FTO - dealer not helping 24 Jul 2015 (Forum)
  , they still have the car as now the ECU is causing problems also, it has been there for about 8 weeks and still no end in sight. the bill at the moment is a further £1600. I contacted the garage that sold me the car and they are refusing to help and are now saying that they sold the car to me
• Ford Focus 1.8 TDCi, 2001. - Occasional rough starting 27 Oct 2012 (Forum)
  . Occurs on 1 out of approx. 50 times I use the car. Occurs no more frequently now than 6 years and 60k Km back. I thought this might be a faultly ECU but maybe it is related
• Ford festa - Please help new Injector seals replaced by garage. 21 Oct 2012 (Forum)
  ... and then they said it could be the ecu and that could be expensive to fix ..so they had the car for 4 days I got it back for this weekend as I had to go somewhere so I took it on the motorway wow it was painful not to say dangerous it just about got to 70 mph I could not overtake as there's no power I have to take
• Ford Fiesta Zetec - I bought a stolen Car (Clone) what happens now? 8 Jul 2012 (Forum)
  and the TAX and MOT appeared fake as well.   Today the vehicle is being taken to a ford garage to be plugged in and have its ECU checked. Is it certain this will identify the true VIN of the vehicle?   Once they have identified its true identity they will obviously know
• 
  Does my Peugeot Expert diesel van need a new fuel pump? 13 Sep 2010 (Ask HJ)
  I have a Peugeot Expert diesel, 2005 model. I've just had the key programmed by Peugeot. They said the key wasn't programmed, but I think differently....
• Renault Espace (1997 - 2002) - 02 2.2 DCI difficult starting 16 Feb 2010 (Forum)
  guage were OK, and the engine seemed normal, I put this down to probably the water temp sensor going soft and ignored it. Soon afterwards, the car became very difficult to start when warm, but absolutely fine when cold. I reasoned that maybe the same sensor was misleading the ECU? Anyway, as autumn
• Volkswagen Polo III (2000 - 2002) - 00 1.0 Engine timing 20 Jan 2010 (Forum)
  that there might be something wrong with the timing. In the Engine ECU i think that its just not sparking the Engine oil or fuel. what do i do? I looked at this post and i am thinking should i change my Spark Plugs and check out my Air Filter ? http://www.honestjohn.co.uk/forum/post/index.htm?t=38204 Please
• Volkswagen Passat (1988 - 1997) - 96 2.0 Poor running, hesitation. 5 Jul 2009 (Forum)
  but they all look ok to me. I've also removed and cleaned the throttle body as somebody suggested that this might be to blame, but to no avail. Somebody also suggested that the coil and ECU relay can cause similar symptoms when they go bad but I doubt either of those parts failing would prompt an O2 sensor
• Peugeot 406 (1999 - 2004) - 2000 2.0 110 BHP HDI Air Pollution Fault 23 Apr 2009 (Forum)
  pollution fault' showing along with the engine management light on dash. Car will not accelerate above 2500-3000 rpm A few seconds over run occurring after switch off. Half a tank of quality BP Premium Diesel put into tank and taken to garage for an ECU error reset as thought the error could be to do