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 donn
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| posted on March 22nd, 2015 at 09:52 PM |
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Fuel gauge question
The fuel gauge in my vert has karked it, it was a bit hit and mis for a while, ie, worked sometimes but then stopped workin, but has now stopped
completely so I replaced the unit in the tank with a new out of the box unit, no change, I removed the speedo ( the gauge is in with the speedo ),
checked the connections where tight and clean but that also made no difference. There's a small box like part attached at the rear of the gauge, it
is branded with the VDO name, could that ( whatever it is ) be faulty and the cause of the malfunction ? Is there any way that the connections etc be
checked with a multimeter? Any suggestions welcome and appreciated.
Thanks
Don
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grumble
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| posted on March 23rd, 2015 at 07:10 AM |
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donn the little box is the voltage stabiliser and controls the power to the gauge,if you briefly touch the wire to the tank unit to earth with the
ignition on the gauge should go to wards full. If this doesn't happen then the stabiliser is most likely the problem,if the gauge works then it is
the tank unit. I am assuming that you have tried another earth from the sender to a good clean point on the body.
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hulbyw
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| posted on March 23rd, 2015 at 08:07 PM |
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If it is the gauge that is faulty it can be repaired for a lot less than a new repro one. The voltage stabiliser can also be replaced with a solid
state item as an upgrade. Got mine done at an instrument repairer in Melbourne
Cheers
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donn
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| posted on April 1st, 2015 at 01:17 PM |
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Thanks for the sugestions,I have come to the conclusion that the problem must be in the voltage stabiliiser so it's off to the auto electrician just
in case i've missed something. hulbyw, can you give me a bit more info on the solid state thingie in case the auito electrician asks me
Thanks
Don
I dream of a day when a chicken can cross a road without being asked for it's motive!
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psimitar
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| posted on April 1st, 2015 at 05:49 PM |
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| Quote: | Originally
posted by donn
Thanks for the sugestions,I have come to the conclusion that the problem must be in the voltage stabiliiser so it's off to the auto electrician just
in case i've missed something. hulbyw, can you give me a bit more info on the solid state thingie in case the auito electrician asks me
Thanks
Don
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The solid state device is just a voltage regulator. Check out Speedy Jims website cos pretty sure he has the output voltage somewhere on his site.
It's not 12v from memory. The T022 3 pin type regulator is the easiest one to use and I think it only needs to be able to handle 2amps max.
madness is in the eye of the beholder  |
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hulbyw
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| posted on April 1st, 2015 at 07:45 PM |
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The solid state regulator is just a modern version of the original.
Brand is CPT. 15w DC/DC converter. In 12v and out 5v 3a max.
Cheers...Wayne
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grumble
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| posted on April 1st, 2015 at 08:19 PM |
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| Quote: | Originally
posted by donn
Thanks for the sugestions,I have come to the conclusion that the problem must be in the voltage stabiliiser so it's off to the auto electrician just
in case i've missed something. hulbyw, can you give me a bit more info on the solid state thingie in case the auito electrician asks me
Thanks
Don
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Donn Namiiss in Newcastle used to repair my speedos and gauges when i had my workshop,good to deal with and quality work.
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hulbyw
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| posted on April 1st, 2015 at 08:29 PM |
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Just spotted the CPT reg on ebay at USD 3.56 with free shipping. Seller whitesibirien. I paid $40 from the speedo guy!
Cheers
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donn
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| posted on April 1st, 2015 at 08:40 PM |
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Thanks grumble, I've used Namis myself to repair a VDO speedo
Hulbyw, Thanks, good to know
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psimitar
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| posted on April 2nd, 2015 at 06:48 PM |
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| Quote: | Originally
posted by hulbyw
Just spotted the CPT reg on ebay at USD 3.56 with free shipping. Seller whitesibirien. I paid $40 from the speedo guy!
Cheers
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From RS components it's less than $2 from memory inc shipping if bought online. 
If you like, now that I know what the output voltage and current are I can link the RS part on here.
madness is in the eye of the beholder |
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donn
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| posted on April 2nd, 2015 at 10:13 PM |
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| Quote: | Originally
posted by psimitar
| Quote: | Originally
posted by hulbyw
Just spotted the CPT reg on ebay at USD 3.56 with free shipping. Seller whitesibirien. I paid $40 from the speedo guy!
Cheers
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From RS components it's less than $2 from memory inc shipping if bought online.
If you like, now that I know what the output voltage and current are I can link the RS part on here.
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That would be good, thanks
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psimitar
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| posted on April 4th, 2015 at 10:58 PM |
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So this should do the trick
5v @3amps voltage regulator
Pretty sure it's the one Speedy Jim has recommended in the past on other VW websites
madness is in the eye of the beholder |
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