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The Pub For General Automotive Related Talk |
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#1 | ||
Regular Member
Join Date: Oct 2019
Location: Earth
Posts: 411
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Easiest way to explain is when the car got warm - half way through 'normal' - car started to lose volts. I've never had this happen before and it's got me stumped. I will ad that if I pull over, put it in park and give it a small boot full the volts kinda/sometimes come back up, and has only done so when actually driving,
Cars a NL Fairlane 4L |
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#2 | |||
Cabover nut
Join Date: Aug 2015
Location: Onsite Eastcoast
Posts: 10,858
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Quote:
I've had all of the above happen.
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heritagestonemason.com/Fordlouisvillerestoration In order that the labour of centuries past may not be in vain during the centuries to come...... D. Diderot 1752
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#3 | ||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 21,985
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No point guessing. Charge the battery and load test it.
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#4 | |||
Regular Member
Join Date: Oct 2019
Location: Earth
Posts: 411
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Quote:
Not sure how else to explain it, if I start the car and let it idle to maintain the battery not a problem. But the last two times I've taken the car out when it gets to the M of 'normal' it starts to lose volts Should add that when the car just idles it barely gets to the L of normal |
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#5 | ||
Regular Member
Join Date: Oct 2019
Location: Earth
Posts: 411
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#6 | ||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 21,985
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So you have no access to anyone with a proper load tester, nor intelligent battery charger?
“Earth” is a somewhat unhelpful address for someone requesting assistance that may include location-based suggestions in its best form. |
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#7 | |||
Regular Member
Join Date: Oct 2019
Location: Earth
Posts: 411
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Quote:
( just trying to say there's a lot of them) I put the battery back in the car before and started it, not a problem but it barely got warm |
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#8 | ||
FF.Com.Au Hardcore
Join Date: Jan 2005
Location: Hervey Bay
Posts: 5,225
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#10 | ||
FF.Com.Au Hardcore
Join Date: Jan 2005
Location: Hervey Bay
Posts: 5,225
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#11 | |||
Regular Member
Join Date: Oct 2019
Location: Earth
Posts: 411
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Quote:
I couldn't remember where I seen /found it |
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#12 | ||
Experienced Member
Join Date: Sep 2006
Location: Australasia
Posts: 7,565
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Could be alternator or its regulator, pay to get an auto elec to test it.
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#13 | ||
Regular Member
Join Date: Oct 2019
Location: Earth
Posts: 411
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#14 | |||
Cabover nut
Join Date: Aug 2015
Location: Onsite Eastcoast
Posts: 10,858
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Quote:
Did you say you only use the car twice every 2 weeks or so, I reckon unless you take it out on a reasonable long drive to charge at around 14.4V, the poor battery will be going through some stress constantly kept on a float charge.
__________________
heritagestonemason.com/Fordlouisvillerestoration In order that the labour of centuries past may not be in vain during the centuries to come...... D. Diderot 1752
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#15 | ||
Experienced Member
Join Date: Sep 2006
Location: Australasia
Posts: 7,565
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#16 | ||
Thailand Specials
Join Date: Aug 2009
Location: Centrefold Lounge
Posts: 49,097
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Does the high pressure power steering line leak - if so the alternator is chock full of power steering oil and its eaten away the brushes and copper slip rings on the alternator and now its ****ed.
Get a cheap multimeter, put it on 20V DC, Start the car, Put the probes on the positive and negative terminals on the battery, you're looking for 13.8-14.4V, Then turn on all your electrical accessories - the headlights, HVAC fan on full, AC, wipers, stereo, and see what the voltage does. If it starts dropping, and it goes down to sub 13V, then the alternator is cactus and its not holding up under load and needs to be replaced. If it comes off looking like it come from the titanic, the power steering line is leaking into the alternator, you MUST replace it with a new one before doing the alternator, or 6 months later you'll be buying a new alternator again. |
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#17 | ||
Regular Member
Join Date: Oct 2019
Location: Earth
Posts: 411
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After finding my brother's multi metre, with the car not running 12.56, after starting the car it was 14.6 but quickly dropped to 13.8 when the motor ' spuddered' ( kinda miss fired) then slowly dropped to 13.5 over 10 mins or so. I had no electrics on, besides when the thermos kicked in ( made .01 volts difference)
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#18 | |||
FF.Com.Au Hardcore
Join Date: Aug 2005
Location: Melb.
Posts: 4,443
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Quote:
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#19 | |||
Thailand Specials
Join Date: Aug 2009
Location: Centrefold Lounge
Posts: 49,097
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Quote:
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#20 | ||
Sick Puppy
Join Date: Jul 2006
Posts: 1,963
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Sounds like a fingered alternator to me........
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#21 | ||
Regular Member
Join Date: Oct 2019
Location: Earth
Posts: 411
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#22 | ||
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Location: Earth
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#24 | ||
DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 21,985
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So your closest option for an auto sparkie is Kingaroy; I can see that probably limits your choices to just a couple.
https://www.sptools.com/product-cata...tometer-clone/ We have one of these at work, in honesty it’s pretty good for a quick guess. Quite possible that the mechanical shops in town will have similar or the same. A sparkie should have a carbon pile load tester, this really puts a battery through its paces but being a more specialised item priced into the high hundreds, it’s kind of reasonable to charge people for the results it gives. https://www.projecta.com.au/products...on-pile-tester |
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#25 | ||
FF.Com.Au Hardcore
Join Date: Jun 2011
Location: Pt Lincoln far side South Oz
Posts: 5,782
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a decent mechanic involved with RACQ could also assist
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#26 | ||
FF.Com.Au Hardcore
Join Date: Jan 2005
Location: Hervey Bay
Posts: 5,225
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#27 | ||
Regular Member
Join Date: Oct 2019
Location: Earth
Posts: 411
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#28 | ||
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Join Date: Oct 2019
Location: Earth
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