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• Problems with Peugeot406 Eng Mgmt System 21 Mar 2006 (Forum)
  loom or the ECU itself needs replacing - both together are in the order of 1700 pounds. As the car is 6 years old shortly, with 83K on the clock, this is out of the question. Various wiring changes have been made, the fule switch has been chenged a total of three times (certainly at least twice
• Pug 306 1.8 XU7 emissions control? 12 Oct 2002 (Forum)
  the following day. I also know this from the paperwork I have, but the Haynes manual says that the Magneti Marelli ECU fitted to this car is not adjustable, so what was done to make it pass? Ideas last time I asked centred round high tech (but feasible!) solutions such as giving it a good blast, but today, I
• Ford B max 1.4 zetec 2013 - Not starting 20 Oct 2023 (Forum)
  thoughts are ECU failure New ECU is abot £750 plus vat plus fitting, but all of the above depend on Ford dealer diagnostics. There is an indie with access to the software but 4 week wait.   Thoughts, especially Eleki and AC doc?
• Vauxhall astra 1.9 - Astra electric issues 24 Oct 2021 (Forum)
  and interior lights. Car does not start no crank nothing. From what I can tell the front fuse box isn't powering anything but the rear fuse box is (boot, inside lights etc). Does the front fuse box go through the ecu first and then power the components up? 12v is at starter
• Ford Fiesta MK6 1.4TDCI - Ford Fiesta Stalling 26 Apr 2021 (Forum)
  , the yellow engine light comes on and at times the Battery light comes on. They all switch off again after few seconds, however the problem keep on arising after few seconds/minutes.  I took it to the garage when it started it doing it and they couldnt find any errors. They blamed the ECU, however
• Ford Fiesta Mk4 1.25 16V 1999 - Coolant temperature sensor / gauge 20 Aug 2018 (Forum)
  the instrument binnacle and tested the moving coil gauge separately and that's all working OK. So unless there's another coolant sensor I can't see I assume the sender unit connects to the ECU which has a relay output to control the radiator cooling fan and a signal output to drive the gauge. If I'm
• Galaxy EcoBoost Powershift Reversing Lights Failed 5 May 2016 (Forum)
  is coming off gearbox to control unit when in reverse, although it's hard to trace whether it's a multi pole switch that may have a separate feed for the reversing lights - all extremely complex and may even be an internal switch on powershift gearboxes? I have disconnected battery for an hour to do an ECU
• hyundai i40 - supermarket fuel VS branded long term test review 17 Mar 2016 (Forum)
  , filled up again and re-set my ecu. I then did my normal run on the motorway where I average 67.5 MPG. With supermarket this dropped to 61.2MPG. Around town my normal was 55 MPG,  again with supermarket fuel this dropped to as little as 41MPG. I also noticed my engine sounded noticeably louder, my
• Audi Cabriolet 2.6 V6 final edition 1999 - Instrument Panel 8 Aug 2015 (Forum)
  correct cluster, as the odometer is getting very annoying to cope with, and this cluster has had a hard life, by the look of things. To this end I Recently had the original cluster repaired and tested (everything worked correctly)  by ECU testing ,and refitted to the car. Now I find that the Temp
• Vauxhall Astra 1.6 SXI - Engine light on and flashing 14 Jul 2015 (Forum)
  My son's Astra 1.6 SXI 52 plate has its amber engine light come on and then flashes and goes into limp mode, easy fix you would think. Firstly we had the car in a garage and ecu fault codes checked, came up with coil pack, I replaced that but no difference found, booked
• Vauxhall Zafira 2.0 DTi 05 plate - Programming of new ECU codes - neccessary? 30 Jan 2014 (Forum)
  I own a Vauxhall Zafira diesel which has done approx 70,000 miles. I have had problems with heavy steering and with the car intermittently losing power...
• 2005 Picasso Hdi 50k miles - Citroen Picasso engine management light 26 Jul 2013 (Forum)
  on again and it was decided to replace the ECU ... All sensors, tests and ECU has cost over £1000! Diving the car home tonight and low and behold the engine management light has came on again!! Can anyone help me as to what it maybe??? The light comes on and the car appears to lose power but will drive
• Astra G 1.8 16V Sxi - Misfires, surging and hesitation 13 Jun 2013 (Forum)
  it privately and was told going in that there was an issue with O2 sensor. £300 later and the O2 sensor wasn't the issue, someone had been monkeying with the ECU and had bent a pin. The ECU has been remapped, the O2 sensor replaced etc. That was 6 weeks ago and the car has been fine ever since.
• Volkswagen Golf V - GOLF V 1.9 TDI hot start - how to remap? 12 Nov 2012 (Forum)
  this with either 1) new battery 2) new starter motor 3) new both of these BUT... I also gather that it can be solved by changing the engine management software to inject fuel sooner during a hot start. Please could somebody explain the following: Does the ECU chip have to be replaced (like a re-map
• vauxhall corsa sri - maf sensor 18 Aug 2012 (Forum)
  wiped etc but no change, sent to electrical engineers they ran through all they could think of, kept wiping the code and re running it, but it left them stumped !! now if you unplug the sensor it runs fine, and the only suggestion the garage has is to change the ecu, but i have read that it could
• renaut grande espace - renaut espace electrical nightmare 26 Nov 2010 (Forum)
  it was ECU(?) and this was replaced (well over £1000). IN the middle of all this when we were getting upset they admitted that they drained the battery when trying to bring the car into the garage as I left it parked outside when I dropped it. they couldn't get it to move and ended up draining battery
• Rover 618 (T reg) - Stupidly inserted red key in ignition 24 Apr 2010 (Forum)
  Hi, I bought this car three days ago and since i moved it to clean it at the end of my road i have been unable to drive it anywhere.  I know now that because i decided to use the red key that i have totally wiped out the memory of the black keys in the ECU.  Is this correct
• Ford Mondeo II (1996 - 2000) - 00 2.5 Alternator problem - need advice ASAP 9 Jul 2009 (Forum)
  suggested a possible ECU fault if it is sending the wrong signals for charg e levels but it's flickering several times a second, I'm not sure even a faulty ECU could send such rapid signals? Any help appreciated!
• Vauxhall Astra G Petrol (1998 - 2004) - 02 1.6 Car cutting out (recurrent fault) 10 Jan 2009 (Forum)
  with my ECU that was causing the EGR valve to fail. My question is whether it is feasible for the ECU to cause the EGR valve to fail over time? Any help on getting to the root cause of this issue is much appreciated, as this is becoming a very frustrating problem.
• Citroen Xsara Picasso (2000 - 2010) - 02 2.0 HDi Engine Fault - knocking/jerking 23 Dec 2008 (Forum)
  or perhaps some backlash in the gearbox. This happened intermittently for a while but quickly became worse to the point that the ECU dash light came on. I took the car to my local garage who diagnosed a faulty fuel rail pressure sensor which I had replaced under warranty. However, as always happens