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• Peugeot 106 (1991 - 2002) - 98 1.1 erratic starting 22 Jul 2009 (Forum)
  My zest has developed a starting fault---sometimes it wont!! Doesn't matter if it's hot or cold and if I leave it awhile it will usually go again. It let me down this weekend and while I had the bonnet up I heard a click from under the ecu plate. I think it was from the fuel injection relay
• EGR valves Diesels 17 Apr 2009 (Forum)
  Best way of looking after these? By that I mean keeping them clean / working. Or is dismantle & clean the best way? I know they can be blanked off & turned off via the ecu - a reputable tuner would be able to do this, but not sure of any harm on this? Have heard that this may raise (Intake
• VW Passat tuning 16 Sep 2006 (Forum)
  Hi there, I would like some advice please. I own a 1999 VW Passat Turbo. The standard stock is 150 BHP. Recently I bought a device on Ebay according to seller tricks the ECU which increases the air flow. (I may have this info wrong). Has anyone fitted a similar device which worked for them
• Knock Sensor 5 Aug 2005 (Forum)
  Can anyone tell me what a knock sensor is please? I have one on my Subaru Forester. I am given to understand that it may be the cause of some engine hesitation in accelerating away from 1st to 2nd. My ECU was upgraded by Subaru to try to solve the hesitation problem. It worked fine for a couple
• Mazda 6 diesel cuts out 2 Mar 2005 (Forum)
  the system. Ive had a recall done that consists of a capacitor between the A/C compressor and the ECU because Mazda found the compressor was sending "bad" voltage spikes to the ECU, causing the thing to shut down. It still stops with the A/C off!! Any clues chaps?
• Bone Idle 306 13 May 2003 (Forum)
  My pug 306 1.4 S reg, won't start without throttle and stalls every two minutes when idleing. It had a recent 60,000 main dealer service It has had a new stepper motor and stills idles badly and stalls. The dealer say "the ignition coil has failed, resulting in the failure of the ECU" and qouted
• jump starters 25 Oct 2018 (Forum)
  can using a lithium booster jump starter .fry the ECU and built in sat nav?
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  Phantom of the operator 21 Mar 2009 (Ask HJ)
  I have a question regarding my 2002 Mercedes SLK 320 manual. Over a period of 2 years the car has failed a total of 6 times. On the first 3 occurrences...
• BMW 3 Series - Garage problem 8 Jan 2024 (Forum)
  was dubious but they said 99% sure. They changed them and still missing so they had to borrow a diagnostic machine from someone else, they said it was the ECU then, I was told it would be sent away and it would be £80, and then if I agree to the price of the repair that £80 would be refunded. That seemed fair
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  Renault Megane Scenic parking brake problem 25 Jan 2013 (Ask HJ)
  We had a battery problem and had to start the car by manually releasing the automatic handbrake. We rolled the car back and up a small slope. The brake...
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  Problem with a recently purchased used car 5 Jul 2012 (Ask HJ)
  Bought an Insignia CDTI Elite 160 (used, 2009 58 reg). I have had it for 1 week. The car has started to judder every now and again in 2nd/3rd at low...
• Toyota RAV4 Automatic 2003 120000 miles - Erratic problem pulling in low gears 21 Dec 2011 (Forum)
  the car and agreed to check it out again as the problem started after the service. They could not replicate the problem while they had it. I have seen on mainly USA forums that 1. there was a problem sounding like this with the ECU/ECM with the RAV4 2002-04 model - excpet that they often
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  Focus TDCi won't start 3 Aug 2011 (Ask HJ)
  Was driving home when my car juddered to a stop & cut out. Have had the Cam & crank sensors changed & a new fuel filter. There is pressure at the injectors...
• Vauxhall Cavalier (1988 - 1995) - M 2.0 Eco Whoas - Key/ECU/?? Not start. 5 Nov 2007 (Forum)
  , with spare key. Car started no problem. Also started on main (normally used) key as well as spare. pink fluffy dice Garage checked on diagnostic kit - "carried out Tech 1 check, found intermittant fault with ECU. Light now off, if prob reoccurrs, will require a new ECU". Is this flannel? So. This car
• Peugeot Partner Combi - 62 mph limiter removal 15 Jul 2022 (Forum)
  I recently bought a 62 plate partner van. The previous owner was a council. It’s limited to 62mph. The council it came from are adamant the speed limiter is set in the ecu and there is no aftermarket limiter in place. (Various bits of the dash were stripped and nothing found either) I had my local
• 2004 Renault Laguna 2.0 Turbo Extreme - ECU software/tools? 19 Jul 2013 (Forum)
  hi folks, i had my '04 Laguna 2.0T petrol remapped a few years ago and i want to have a tinker with the map myself as Im not convinced it was done right....
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  Window malfunction 9 Jan 2013 (Ask HJ)
  All the windows of my 2009 Octavia estate open when the handbrake release is pressed.
• citroen c crosser - fuel pressure 4 Dec 2012 (Forum)
  Car started occasionaly juddering at 70mph 2000 revs on an incline. This week ecu light came on put car in limp home mode. Took it to garage who diagnosed fuel pressure low with their plug in device. However when checked the fuel pressure was reading ok. Took it on a run and went no problems
• Peugeot 406 (1999 - 2004) - 99 2.0 HDi Not starting 5 Jan 2010 (Forum)
  Hello to all. Nothing intermittant about this one, the dash board lights up as normal except for an extra yellow light with a key symbol and the display reading 'ignition fault' when cranking. I suspect the ecu is no longer programmed to the key (i have tried another key), there is power and data
• ball bearing saves mans life 19 Dec 2009 (Forum)
  i took this ecu apart earlier this year,its the ecu for the airbag on a fiat and i bought the car with the airbag light flashing,turns out someone had stolen the one out of my car and replaced it with a used one if you look at the photo attached you can see where the ball bearing is loaded and held