robuk2

Budding Enthusiast
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About robuk2

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Profile Information

  • First Name
    Rob
  • Ford Model
    Focus ST mk2
  • Ford Year
    2008
  • UK/Ireland Location
    Nottinghamshire

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  1. Engines cooking themselves is correct, my grandson`s did just that, Ford eventually replaced the engine free of charge (one off), he sold the car last week, couldn`t live the chance of it going again.
  2. (1) Why do you need stop/start on a 1 litre engine (2) It won`t work for long.😉
  3. You could buy a voltage meter from Ebay, insert it in the cig lighter socket, drive the car some distance and note the voltage. Your car has smart charging which is the prime cause of the battery draining down and stop/start becoming intermittent. The charge voltage should be above 14.2 volts, If the voltage stays around the low 13 volts for long periods the battery will slowly drain down, this mainly occurs when the car is mostly used for short journey`s. You could as a test disconnect the sensor (IBS) attached to the negative clamp of the starter battery this puts the alternator into an old fashioned continuous charging regime of 14.2 to 14.4 volts and fully charges your battery, drive the car for a week or so, if the battery stays fully charged it`s smart charging that`s your problem. If you feel the need Just reconnect the sensor after test and you are back to where you were. Disconnecting the sensor is totally safe, I disconnected my Merc over a year ago.
  4. The Mer`c battery as shown is over 8 years old, the Merc is a Blueefficiency petrol auto with installed command sat nav, when battery`s were last checked about a month ago the voltage showed 12.7-.8 on both after overnight standing, the car is parked outside and starts instantly. ( model yrs 2012-2015 ). If later cars are actually more power hungry a larger alternator and battery would obviously have been fitted to cope. There is a large amount of misinformation placed on the net and forums relating to this subject. If smart charging were not a problem why so many complaints relating to failed or undercharged battery`s in cars with stop/start. Smart charging is the reason stop/start is intermittent, unfortunately for some both systems use the same sensor. I disliked stop/start to such an extent I decided to test this disconnect on the Merc, if there were any problems associated with this simple method it would have already reared it`s head well before now. Agm batterys are advertised as stop/start battery's, nothing to do with any other systems fitted to the car, if you don`t have stop/start you don`t need an AGM or an EFB. 2010 Mercedes 1.6 C180 BlueEFFICIENCY Kompressor Sport 4dr Auto (no stop/start. https://www.motors.co.uk/car-55902267/?i=2&m=sp Lion 027 Car Battery - 3 Year Guarantee Note the reg on Merc and reg on euro parts. https://www.racshop.co.uk/advice/what-is-an-agm-battery https://www.rotronicsbms.com/battery-tips/what-you-need-to-know-about-efbs-enhanced-flooded-batteries/ The Porsche 981 was produced from 2013 to 2016, this is a modern car in my view, mine is a £30,000 vehicle which no longer has stop/start and regeneration. https://www.netcarshow.com/mercedes-benz/2012-c-class/
  5. HiGuy`s just purchased a 2008 Focus ST, have 2 keys and one security dongle that needs to be pressed before start button will start car, my concern is if I misplace the key with the dongle the car can`t be started with spare key alone. Sequence is, open car, press brake, short press on starter button and dash lights up, short press on security dongle then press starter button and car fires up. If you don`t press security dongle car will not start. Anyone got similar after market system with instructions, data sheet or any help of how to get rid of system, pic below shows 2 button dongle. Any help appreciated.
  6. Come on Guys, is my car the only one on the planet fitted with this device.
  7. Thanks Micro, The car turns over when starter button is pressed but won`t actually fire up unless the dongle is also pressed, it is as if ignition or fuelling is interrupted.
  8. Only charges to 80%, if you dislike stop/start try this easy fix, it will give you a fully charged batter even on short journey`s and get rid of stop/start, test it for a week, if not happy just reconnect. A higher amp battery will still only be charged to 80%.
  9. If you have dirty diesel then emissions should be a concern, petrol NO, co2 is a plant food not a pollutant. How long did past standard continuous charging alternators last? The Merc in vid I refer to has the same 8 year old battery and alternator it had when the car was manufactured, you don`t need a computer to inform you when the battery needs replacing.
  10. Exactly, the problem appears to be that an 80% charge is either not a high enough SOC for the EMU to engage stop/start or the SOC is not actually reaching that 80%. The point I am making is smart charging saves minimal fuel but can cause the battery to remain under 80% ( near to flat) for extended periods. This system is neither wanted or needed as has been shown with the disconnect on my Merc.
  11. HiGuy`s just purchased a 2008 Focus ST, have 2 keys and one security dongle that needs to be pressed before start button will start car, my concern is if I misplace the key with the dongle the car can`t be started with spare key alone. Sequence is, open car, press brake, short press on starter button and dash lights up, short press on security dongle then press starter button and car fires up. If you don`t press security dongle car will not start. Anyone got similar after market system with instructions, data sheet or any help of how to get rid of system, pic below shows 2 button dongle. Any help appreciated.
  12. The BMS is the cause of your problem, that`s the small sensor attached to the negative clamp of the starter battery, unplug it, this will get rid of stop/start and put the alternator into a standard continuous charging regime of around 14.2/4 volts, this will ensure the battery is kept fully charged even on short runs. With the sensor connected the alternator is put into a smart mode of between the low 13 volts (no charge) and a high energy recuperation 15 volts, the longer the voltage stays at around 13 volts the less charge goes into the battery. The system is flawed, it saves marginal fuel and harms the battery by leaving it undercharged for long periods, especially when the car is used for mainly short journey`s. The vid below shows a simple way to get rid of both stop/start and smart charging, the Merc is 2012 CGI and Had the disconnect over 13 months ago, it`s my daily driver mainly short journey`s, the battery on the Merc is dated 3811, that`s over 8 years old. With the sensor gone you don`t need to code the battery and can use any battery you wish as long as it is sealed, AGM and EFB`s are only needed for stop/start.
  13. Well guys, MY Focus is 2008 ST so don`t have these issues with stop/start, I do though own a 2012 Merc coupe and a 2014 Porsche cayman 981, Stop start is my pet hate and have disabled the system on both the Porsche and Merc. Regarding the Porsche and the Merc a simple way to get rid of this system is to disconnect the battery sensor attached to the negative clamp of the starter battery (BMS), this also gets rid of smart charging which is the cause of your under charged battery, the BMS is of little actual value but does cause the battery to become partially charged for long periods especially on short runs which shortens it`s life, manufactures say smart charging saves fuel, the savings are minimal in real life. If you check the voltage when driving the car with BMS in play you will note the voltage fluctuates between the low 13 and high 15 volts, 13 volts is providing vertically no charge so the longer you see 13 volts the less the battery is being charged. With the sensor out of play the ECU which controls the alternator can`t read the SOC of the battery and instructs the alternator to enter a continuous charging regime of around 14.2/4 volts at this charge voltage the battery will get fully charged even on short journeys and the battery will obviously last longer. Stop/start will shorten the battery's life by about half, the merc`s battery is dated 3811, that`s over 8 years old and it still shows 12.8 volts. Plug voltage meter into cig socket as shown in my vid below.