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Dash gauges fluctuating


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#1 _project lx_

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Posted 19 February 2017 - 03:57 PM

Hi guys have a problem with lx v8 fuel,temp& oil pressure going fully up when driving . They also drop right off while driving sometimes any help be great cheers

#2 hanra

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Posted 19 February 2017 - 04:37 PM

Get a new voltage regulator ASAP.

Edited by hanra, 19 February 2017 - 04:37 PM.


#3 _project lx_

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Posted 19 February 2017 - 05:30 PM

Thanks for that repco or super cheap stock them?
Forgot to mention the volt gauge sits good

Edited by project lx, 19 February 2017 - 05:31 PM.


#4 hanra

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Posted 19 February 2017 - 06:57 PM

Repco or supercheap for Commodore or Falcon parts.

Source a good second hand one. Or fit a Jaycar adjustable 5v PSU.

Correct, volt gauge is not dependant on the voltage regulator.

#5 hanra

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Posted 19 February 2017 - 07:04 PM

https://www.jaycar.c...ulator/p/XC4514

#6 _project lx_

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Posted 19 February 2017 - 07:34 PM

Is that on the back of the dash I have a spare dash but it's not an Slr one will they be the same

#7 hanra

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Posted 19 February 2017 - 07:37 PM

Yes. No.

#8 _project lx_

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Posted 19 February 2017 - 08:33 PM

Thanks for that

#9 EunUCh

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Posted 19 February 2017 - 08:37 PM

ffs Hanra , don't start this yes/no thing , we got over that at express ? :)

 

The 4514 works , but it comes un-insulated which means a box is needed and extra wires and rooting around whereas the the simple 3 pin with a ground tab will bolt into place with a minimum of fuss onto the die cast body of whatever it was bolted to as per fact. , from a vague memory lapse even the "pinger" type had it's body bolted to some sort of sink , who knows what the 4514 has "built in" in terms of thermal over load and correction ?



#10 _project lx_

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Posted 19 February 2017 - 08:45 PM

Thanks that sounds helpful where would I get the simple 3pin one cheers

#11 hanra

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Posted 19 February 2017 - 08:48 PM

https://www.jaycar.c...ulator/p/ZV1505

#12 _project lx_

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Posted 19 February 2017 - 09:11 PM

Will the reg be the same in my SS just to try it out

#13 VDO

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Posted 20 February 2017 - 07:51 AM

ffs Hanra , don't start this yes/no thing , we got over that at express ? :)

 

The 4514 works , but it comes un-insulated which means a box is needed and extra wires and rooting around whereas the the simple 3 pin with a ground tab will bolt into place with a minimum of fuss onto the die cast body of whatever it was bolted to as per fact. , from a vague memory lapse even the "pinger" type had it's body bolted to some sort of sink , who knows what the 4514 has "built in" in terms of thermal over load and correction ?

The 4514 works because it has a digital switching circuit which produces little or no heat and has inbuilt overload protection, very safe.  Sure there's 3 wires to connect, but that's going to be the same with any external reg.  The little 3 pin regs generate a lot of heat, require a decent (larger) heat sink, are unstable in terms of voltage output and are a fire risk imo.  My recommendation is don't use them.  The original "pinger" regs generate only a small amount of heat, no sink, as the heat is what makes them operate.



#14 EunUCh

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Posted 20 February 2017 - 08:27 PM

agree , the 3 pins do get warm when pulling around 875ma , without knowing what  load they are under in heavy load conditions sort of makes it hard to work out how much they draw in heavy load conditions ? , either way , one or the other , personal choice , the "pinger' was a "digital " device  :)

some clever engineering went into making those things , both back then and now . :)






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