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• Honda Accord 96 - Refit Repaired ABS Modulator - new problems 9 Oct 2013 (Forum)
  I would really appreciate any advice here as I am tearing my hair out. The VSA warning light has been on for years and I didn't bother with it as it didn't affect the MOT. It now does. Honda said 2k, so I got the part taken out (ABS modulator) and sent it to ECU testing who repaired
• Mitusbishi & Others - Diesel Particle Filter removal 30 Sep 2012 (Forum)
  running above the fill level. They also tweeked the engine ECU with an update. So I come to the crunchpoint: I am seriously consdering a DPF removal , I have been told by an expert that it is not part of the MOT, but smoke emisssion IS. The company I spoke to ,have been in Engine
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  Octavia windows opening 9 Jan 2012 (Ask HJ)
  The windows on our Octavia open when the car is locked and left. This has happened several times and we have had a sat nav stolen as a result. Is this...
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  Electrical issues 8 Nov 2011 (Ask HJ)
  I needed a jump start on my car recently, and now the 2 rear doors wont open or lock with the key (only manually) and the 2 front electric windows wont...
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  Warning message of blocked fuel filter on Peugeot 307 HDI 15 Jan 2011 (Ask HJ)
  Warning message has come up saying blocked fuel filter. I've changed the filter already, yet still receiving message. Any ideas on how to cure it?
• Vauxhall Astra G Diesel (1998 - 2004) - 01 1.7 Knocking noise from engine 31 Jan 2010 (Forum)
  memory with diag machine, i have heard a few rumours about the 2 ecu's in the engine bay causing certain engine running and knocking noises, ie fuel knock/pinking, can anyone advise me what these ecu' issues are or are there any known problems like this that anyone can advise me on, any help would
• Vauxhall Corsa B (1993 - 2000) - 99 1.2 Sudden loss of power - how do I test AFM? 12 Jun 2009 (Forum)
  suspecting an AFM fault. There is no ECU fault codes but apparantly on the 1.2 16v faulty AFMs usualy do not show a fault unless its very bad. The other sting is that people have had ECU problems resulting in cheap after market AFMs so it is advised to use a Bosch one but they are £100. Is there anyway
• Peugeot 307 (2001 - 2007) - 03 2.0 "Unblock Diesel Filter" 4 May 2009 (Forum)
  Hi guys, I have a 03 reg 307 hdi 110 bhp (RHS) and have recenly had the ECU remapped to increase its performance (now 145bhp). the car has only done 46k, mostly urban driving, and has been regularly serviced (although not by peugeot). it has just given me the "Unblock Diesel Filter" warning
• Ford Mondeo III (2000 - 2007) - 2004 2.0 TDCi fuel Consumption 10 Apr 2009 (Forum)
  My 2.0litre 115bhp TDCi only returns approx 40 mpg. I am told it should be more and the local Ford garage has not been able to improve it. It regularly soots up the EGR valve and has had a replacement ECU with several attempts at ECU firmware upgrades. It also suffers the 1700rpm flatspot. Has
• Peugeot 307 (2001 - 2007) - 01 HDI lack of power etc. 6 Apr 2008 (Forum)
  hi i have a Peugeot 307 hdi 51 plate. i have been having problems with it no power and then eventually gave up on me in January. had it in at a peugeot garage and can only find a fault on the fuel pump. since then i have sent my ecu away and that has come back fine. hubby plugged ecu back
• Golf V5 mk4 vibration and juddering 12 Oct 2006 (Forum)
  I have a Mkiv golf V5 auto engine code AGZ which is suffering from poor idling and hesitation. I took it to a garage and it kicked up a number of faults - throttle body short to ground, mixture problems, and ecu defect. I was told to change the throttle body and that would cure it all. After
• Vectra lumpy acceleration 5 May 2005 (Forum)
  still have a lumpy acceleration problem. Between 1000 and 3000 RPM the car is lumpy as hell. I tried the paper clip trick on the ECU and found no fault codes and the ECU light has never flashed on. THe car has had new plugs, fule filter etc within the last 10K and has only done 80K. HELP, its driving me
• Fiat Punto Overfuelling 12 Feb 2003 (Forum)
  sensor and throttle pot. All OK. Lamda sensor is working fine (although not sure this does much at tickover). MAP sensor appears to be OK but not exactly sure how to test. Did wonder if fuel reg pressure is too high but I can't see how the ECU would know about this, hence how would it know to put
• Suzuki Swift 2012 - Battery Disconnection 5 Jan 2015 (Forum)
  I am going to remove the battery for charging, Can I expect any problems with the ECU  memory? I realise that the radio will need re-coding.    
• Rover 75 Cdt 4 Nov 2003 (Forum)
  Fuel consumption as dropped over the last week down to around 32/34 mpg. - no ECU codes have come up Any idea\'s?? perhaps one of the sensors K2
• Skoda Roomster - New Battery 13 Dec 2022 (Forum)
  Skoda Roomster 2014 Petrol I am about to change a failing battery. Does the new battery need to be registered to the ECU?  If it is not done, would this affect the life of the new item?  
• cold idling problem - suzuki 30 Apr 2005 (Forum)
  My girlfriends suzuki alto does not idle properly. its even worse when its cold. The engine has an ecu. Anybody any ideas what could be causing this?
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  Engine problem with SEAT Altea 1.9 TDI 4 Apr 2012 (Ask HJ)
  I have a Seat Altea XL 1.9 TDI 59 reg and every few weeks it refuses to start - it normally kicks over first time no matter what the weather is. SEAT installed...
• Vauxhall Corsa 06 1.2 SXI+ (twinport) - No codes but.... 28 Feb 2019 (Forum)
  . Another way to even out the idle rpm is to unplug the pre cat 02 sensor. This obviously triggers the EML but the rpm sits at about 650. Plug the sensor in and there's a bit of a delay of about 30 seconds and the pulsating returns. But I have to drive the car for a few miles before the ECU twiggs
• Toyota Yaris 2010 - Multiple ECU faults all at once. Dead car on M6 ! 10 Dec 2018 (Forum)
  On Wednesday my Yaris totally died on the M6 in the wet. It's done it a few times in VERY WET motorway driving that it has stumbled and lost power (felt like fuel starvation but hard cuts, proper jerking) ECU light on and then it's fixed itself. Couldn't get to the bottom