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Home > Technical > Expected voltage drop starting & clutch functioned MY2 |
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jules Member Since: 13 Dec 2007 Location: The Wilds of Warwickshire Posts: 4937 |
My 4 yr old battery begins with 12.5v and drops to 10.8v during starting and charges at 14.6v.
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12th Sep 2023 12:51 pm |
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BossBob Member Since: 30 Sep 2010 Location: Bristol Posts: 1367 |
As Jules said. If it is cold enough for the glow plugs to be needed as a starting aid rather than to improve combustion there will be a delay between pushing the start button and the engine turning over. Then you might see the glow plug warning light but in 12 years I only noticed it a few times. |
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12th Sep 2023 1:33 pm |
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flyinghorse1 Member Since: 18 Sep 2011 Location: Scotland Posts: 10 |
Thanks for the responses.
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13th Sep 2023 8:24 am |
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IanMetro Member Since: 11 Sep 2017 Location: Somerset BS21 Posts: 3107 |
Don't forget that the electronic units depend on separate signal earth connections that may be getting corroded as time goes by.
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13th Sep 2023 8:42 am |
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BossBob Member Since: 30 Sep 2010 Location: Bristol Posts: 1367 |
Brake or clutch depends on automatic or manual gearbox. Don’t forget that starting a Freelander (or any modernish car) is like booting a computer. If you go straight for a start with your foot on the relative pedal you are starting things like the ABS pump and all the control modules at the same time as the starter is calling for power. If you turn the car On, by not pressing the relative pedal when you press the start button you allow the cars systems to turn on and be ready for when you put your foot on the pedal and press the start button. This would have also activated the glow plugs. |
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13th Sep 2023 9:26 am |
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Nodge68 Member Since: 15 Jul 2020 Location: Newquay Posts: 2071 |
It's always prudent to allow the system to boot before allowing the start. Not doing so puts an enormous load on the battery, which can lead to data errors due to voltage drop.
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13th Sep 2023 11:12 am |
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Lightwater Member Since: 21 Aug 2014 Location: Sydney Northern Beaches Posts: 4905 |
A few notes on amps jump starting. https://www.freel2.com/forum/topic38359.html
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13th Sep 2023 1:47 pm |
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flyinghorse1 Member Since: 18 Sep 2011 Location: Scotland Posts: 10 |
Thanks , some good comments.
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13th Sep 2023 3:22 pm |
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Nodge68 Member Since: 15 Jul 2020 Location: Newquay Posts: 2071 |
A lead acid battery is considered discharged if its resting voltage is below 12.6 Volts. My 18 month old battery Yuasa HSB110 holds 12.8 V when resting, and over 10.5V when cranking over.
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13th Sep 2023 5:27 pm |
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