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• Toyota Yaris - Toyota Yaris Diesel Mk2 2010 - DPF Regeneration 19 Aug 2013 (Forum)
  The problem has been reported to the garage and the technican didn't find anything wrong with it as there was no fault code being logged in the ECU. My dilema is that Toyota Technical Service ageed that the the DPF need changing, but they said the fault need to be identified by the garage, but the garage doesn't seem to find any fault code being stored in the ECU.
• 2005 Volkswagen Polo 1.2 (55PS) E - Engine Mis-fire when Idling 23 Jul 2013 (Forum)
  Since the coils were replaced, the mis-fire is on cylinder three only. The mechanic now believes that the fault could be with the ECU. He said that a faulty coil (before I had them replaced) could have sent a charge back to the ECU, causing damage. I am just after some advice really before I spend more money! Any ideas?
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  Overfuelling 1.4-litre CVH engine - what's the issue? 1 May 2013 (Ask HJ)
  I have a Mazda with a 1.4i CVH. The problem is over-fueling. Which sensors should be at fault and what engine would be compatible to fit the gear box?
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  Disconnecting the battery - hybrid alert! 26 Nov 2012 (Ask HJ)
  I will not be using my car for nine weeks (it will be left in the garage), and to ensure that the battery does not go flat period I want to disconnect...
• Vauxhall vectra B 1.8 pet 1978/79? Engine x18xe - misfiring Vectra b on tickover 12 Oct 2012 (Forum)
  New plugs new air filter cleaned carb all leads spark ckecked hoses and tightentened dissconnected and cleaned MAF unit as yet not engine temp sensor. Have read on this site it could be and engine ecu earth fault, but also someone seems to think it could be the ECU itself, but as this is a costly exercise to test repair or replace i thought I'd ask your advice as to my next move. Help needed asap as I'm self employed and this is my work vehicle Many thanks
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  Is my Galaxy worth repairing? 22 Aug 2012 (Ask HJ)
  Taken car to main dealer after power failure. Indications are that PCM is malfunctioning and replacement needed. Dealer explained that there may be other...
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  Is it legal to remove the DPF from a diesel car? 28 Jan 2012 (Ask HJ)
  I've seen adverts for companies that can disconnect the diesel particulate filter from the car's ECU. Is this legal and does it make the car better? I...
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  Golf losing power 9 Jan 2012 (Ask HJ)
  My 6 year old Golf started to lose power going uphill on a long drive today, that is to say I was pressing the pedal but no acceleration was forthcoming. Thereafter,...
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  Gas trick influencer 19 Sep 2011 (Ask HJ)
  I am about to retire and would like to reduce running costs on my 60,000mile Chrysler 300 CRD. I would like to improve the fuel economy, which at the moment...
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  Winding down 15 Aug 2011 (Ask HJ)
  I own a 6 year old Skoda Octavia 1.6FSI with 50,000 miles on the clock. Three evenings ago I locked the car, only to find later that the windows had all...
• 2006 GT TSI 170BHP - VW Golf Mk 5 ABS ECU Pump Light On! 21 Apr 2011 (Forum)
  Hi All, The sun is shining and its time to get the annoying fiddley jobs done!! I was in with my local garage today trying to get...
• Renault Megane Coupe Dynamiqu + 1.6 16v - engine management light was showing on his dash 11 Apr 2011 (Forum)
  ? So he had the ECU checked ( the result was to replace the all 4 coils ) ? BUT WITH THE BASIC  DIANOSTIC MACHINE THE MECHINIC HAD COULD ONLY READ FAULTS -  IT DID NOT HAVE THE RESET MODE ON HIS UNIT Which he changed - He had New ones Fitted- Now the car runs very well and back to normal With no other problems.
• Land Rover Discovery II - Repair Problems 7 Mar 2011 (Forum)
  From the middle of November till the end of January the car went back and forth to garage trying to solve the problem, which at that point they decided was the ECU, this was sent off for repair. On the 16th of February the ECU repair company told the garage it was a complex repair and could be up to a week before we get it back, on the 22nd they said it wouldn't be this week.
• Vauxhall Corsa C (2005) 1.2 SXI - EML on and loosing power! HELP PLEASE? 30 Jan 2011 (Forum)
  I took it to vauxhall in the first instance who, surprise surprise, diagnosed the problem to be the Engine Control Unit (ECU) after replacing the coil pack and sparks plugs also. I had the ECU replaced and this did not rectify the problem. I then had it re-diagnosed by a different garage as the head gasket which, as the car was blowing white smoke, was understandable.
• Ford Fiesta Saloon - EAC FAIL solution needed 18 Sep 2010 (Forum)
  It will mean hiring a vehicle while it`s off road..Thats a better alternative than loosing my job. What I`m really after is advice.. Should I remove the unit and get it to The ECU doctor. paganuk
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  My 2001 Vauxhall Astra won't start - any idea why? 15 Sep 2010 (Ask HJ)
  I've got a problem with my 2001 Vauxhall Astra 1.8 SXI, which won't start in the mornings but will go with a push. Once started, if I turn it off will...
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  My Ford is pinking under acceleration - what's causing this? 6 Sep 2010 (Ask HJ)
  I took my 52-plate 1.8-litre petrol Ford to the Ford garage who recommended getting the ECU/EMS diagnosed and set up correctly. They want £50 to do so...
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  How can I turn off my Mercedes-Benz E-Class' service indicator? 20 Aug 2010 (Ask HJ)
  My local garage expertly services and maintains my Mercedes-Benz E200 Kompressor estate. However, as it is not a Mercedes-Benz dealer, they cannot switch...
• FORD Galaxy 1.9 tdi - White smoke everywhere 27 Mar 2010 (Forum)
  It looks as if the car is about to go up in flames. A week a go I had the engine codes read, P1570 and P1557. engine ECU blocked and Turbo pressure control repectively. I had been having a problem with dramatic power limitation at 60mph and also irractic accelaration on light throttle. Both of these where intermittant.
• Toyota Avensis (2003 - 2008) - 2001 1.8VVTi Co2 emission fail 16 Aug 2009 (Forum)
  Toyota dealer is not seeing the blue smoke reported by the tester but agrees there is a problem As far as I know car drives fine. Although it has always used oil which is a common problem. Tomorrow they are swapping in an ECU from another car and will reprogramme it to see if that fixes the problem. Failing that they are out of ideas. Investigative labour charge is already £400 with no resolution. If it is the ECU what is rough cost and what other things could cause high CO2??