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• 2008 Ford Focus Mk2.5 Titanium 1.8 Duratec Petrol - 08 Ford Focus 1.8 Weird Revs/Idle No Codes But S 4 Sep 2020 (Forum)
  a signal to and from the ECU too apparently. It's one of those SmartCharge things Ford is adamant is a good thing. He reconnected the alternator and the car's idle went mental, rising to 2.5K and more without touching the accelerator pedal. We disconnected the 3-pin plug so it's now working
• Ford Mondeo Mk3 - Tdci - Strange overheating problem, only at speed 4 Jun 2018 (Forum)
    - ECU Diagnostics confirmed that the temperature was apparently what the temp gauge was reading when it was overheating, so cant be dodgy electrical sensor
• Subaru Impreza 2.0 - performance flatspot 21 Sep 2016 (Forum)
  . i have tried to reset the ecu, but it will work better just for about 2 days and then go back again to working horribly. i have been to 5 mechanics . they said the changing of the rims will not cause that, just coincidence. i have changed new fuel filter with regulator. also the fuel pump. we put
• subaru impreza 2006 2.0 R - subaru impreza 2006 2.0R engine PROBLEMS !! 19 Sep 2016 (Forum)
  , no acceleration. then suddenly it will take off again with a spurt but will soon die down again. on the highway 3rd and 4th gears no problems. it will fly. but it never worked again as it did the first month.i have tried to reset the ecu, but it will work better just for about 2 days and then go back again
• Peugeot 106 1997 1.1 - MOT - CO 2nd fast idle, & idle speed too high 21 May 2014 (Forum)
  it up with a blow torch. It reads up to 0.8v, but I haven' wired it up in real life to get actual values when the car is running. Should I be overly concerned about the "003) Exhaust engine idle speed too high [7.3.D.2]" as Haynes says this is controlled by the ECU
• Focus 1.8 TDCi 2001 - 9318 Fault code - occasional engine stop and rough 1 Nov 2012 (Forum)
  (but working) EGF valve. On my car it appears to be attached to the intake manifold so that looks like a tricky  job but if someone can tell me it's easy enough I will do it. Replacing the CAM position sensor and updating ECU software may be a good idea. Any other ideas?  I
• Ford Mondeo TDCI - 2006 Mondeo TDCI EGR Valve - Help Please!!! 29 Oct 2012 (Forum)
  find no faults with the car.  They remapped the ECU and while the (always black) smoke is significantly less than before, it is nevertheless present, particularly on the motorway, with small depressions of the accelerator in 4th and 5th gear.  I cleaned out the existing EGR valve
• Ford Mondeo - 2001 Mondeo 2.0tddi - various/related problems? 6 Nov 2010 (Forum)
  Hi, our car has recently developed a problem/ several problems that have stumped us. We've always been a bit conscious that the timing isn't quite as we'd expect it to be, ecu has been reset which solves the problem but only for a few weeks/months.  Last week the car started bunny
• 306HDi-Knocking after new fuel pump 13 Dec 2006 (Forum)
  over and the speedo/rev counter went round to 110/5000rpm on starting and all the segment of the mileage display lit up - I assume because of low voltage. I'm wondering if the low voltage as reset the ECU or anything and the car needs 're programming?' which is causing the coughing/knocking noise
• 1999 Passat Electrics, niggles 17 Sep 2004 (Forum)
  be a wider ECU, fuse, or wiring issue to be concerned about. The car is five years old and has 114k miles up, if that's relevant. Any thoughts, suggestions or solutions will be gratefully received. -- andymc Vroom, vroom - mmm, doughnuts ...
• Calling all engineers and web whizzos? 14 Oct 2002 (Forum)
  is: What are the long-term effects of running cars designed to use UNLEADED on leaded fuel? Either in general terms or vehicle specific. Issues to consider might be: fuel injection system, ECU control of timing, combustion temps, combustion chamber materials, spark plugs, Lambda sensor. Some vehicles have
• Car has serious problem - HELP! 27 Jun 2002 (Forum)
  psi after 3000rpm but that would account for up to 50bhp loss! More likely this is a symptom rather than the root cause. IGNITION TIMING: The engine is falsely reading high charge temperatures and retarding the timing. This could be faulty ECU, or sensors. TURBO itself. Does'nt smoke or make a noise
• FIAT Grande Punto - Fiat GPunto starting problem, glow plugs 13 May 2014 (Forum)
  . Checked with a garage, they found code P0683 (pre-heat error) and said in most cases it's a harmless ECU error and I should not worry unless problems develop. Drove for 2 months with no problem. Then starting became more difficult with colder weather: it took more time, there was more
• Vauxhall Corsa CDTi 05 plate - V Bad fuel consumption + minor electrical niggles 26 Jan 2011 (Forum)
  of cars and some of the various things in them - I've had to to stop people taking the p155 (e.g blown turbo or duff turbo sensor/valve?! saved myself a couple thou).  Surely to god I would notice a leak like that.  I wondered does the ECU do anything with fuel (DH talks about the mix on his old
• Review Fiat Doblo 2002 JTD "the Fault-Master" 13 Apr 2010 (Forum)
  . That SAt Nav failed at that point followed by the main ECU packing up. The clutch switch had to be disabled to stop stalling if put into neutral while moving. "You`re driving outside it`s design parameters"  commented the dealership and I was called in and advised I should be driving properly
• Vauxhall Vectra B facelift (1999 - 2002) - 02 1.8 Various electrical problems 13 Feb 2010 (Forum)
  15s (sounded like it was not igniting).(Also engine service light was blinking). I then again removed the power from battery and loosened the connectors to the ECU. (Incase there was some dirt or similar there) Everything looked ok, put connectors back and tied again, after about 5s of turning
• Vauxhall Astra F (1991 - 1998) - 96 1.7 Diesel. Wierd fault: fuel stop / cut off so 28 Nov 2009 (Forum)
  solenoid (that the 3 wires go to, in the back of the pump), that stays open for at least 12-15 seconds after starting, even if you switch the ignition off again within that time. I can't think why it would need to do this, but presumably it's linked to an ecu or timer or immobiliser or something. When
• MG 6 - Honda Civic - Honda Civic vs MG 6 - better value used car? 31 Oct 2017 (Forum)
  . in UK   How about more unusual components such as; ABS sensors, torque  sensors, steering rack, ECUs, body panels etc.  Is the chance that these parts need replacement so low, that they are made up by the low price of the car? 2) NCAP - 4 start rating
• Vauxhall Corsa C - Corsa C won’t start first attempt, but will second 28 Nov 2014 (Forum)
  the fuel filter, see what that looks like and if it makes a difference. Going to check the coil pack, if I can find the required resistances somewhere. My friend tells me that if I disconnect the battery for an hour it should reset the ecu and sensors etc
• Peugeot 405 GL 1991 (carb) - Engine Cooling fans not working 4 Jul 2012 (Forum)
  have 1 sensor for the fans & Bitron unit 1 sensor does the temp gauge & ECU (if petrol injection ) The other sensor does the "STOP" & "High temperature" warning lights Thats why Peugeot 405s have 3 temperature sensors. Obviously I have found the temp sensor. I attached a wire each to the remaining