Fuel Gauge and Temp Gauge not working

Wiring, lights, heater controls, anything electrical..

Re: Fuel Gauge and Temp Gauge not working

Postby wally426ci » Wed Nov 23, 2016 6:26 am

Did you open up the fuel gauge to bend the shorted tab back? If that is still touching or burnt, it will probably have the same effect? :thinking
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Re: Fuel Gauge and Temp Gauge not working

Postby pgillott » Wed Nov 23, 2016 6:31 am

I must have missed a step. This wasn't mentioned in the tutorial that I was sent. I need to open the fuel gauge up? Would you mind elaborating a bit
Thanks for the info
pg
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Re: Fuel Gauge and Temp Gauge not working

Postby wally426ci » Wed Nov 23, 2016 7:48 am

I can't find the article anymore, but there was a directive on installation to perform this step...

This shows the inside of a guage:
http://www.chargersourceguide.com/voltagelimiter.html

Here is an article on making one I believe:
http://www.allpar.com/history/mopar/electrical2.html

another
http://www.moparts.org/Tech/Archive/elec/11.html

another post from this site
viewtopic.php?f=21&t=15450
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Re: Fuel Gauge and Temp Gauge not working

Postby MadMC63 » Wed Nov 23, 2016 10:14 am

I used the limiter from the schematic and attached it to the 12V in connection of the fuel gauge. The gauges are a little slow to respond but other than that it works flawlessly. I did 12V to 8V and 8V to 5V because of the heat. If your not paying attention those transistors generate enough heat to do serious damage to wires or your skin i.e. 2nd and 3rd degree burns. Very painful. If you supply 5V in the thermal resistor will never heat up enough to do anything and voltage will pass straight through and if it's already completely bad so is the fuel gauge.
This is the previous post where I got my info. It clearly states it is not necessary to do anything to the old limiter.
http://imageevent.com/jeffc/techstuff2e ... =4&s=0&z=2
1971 Dodge D100
So what's wrong with setting beneath a single pull string incandescent light bulb writing angry letters?
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Re: Fuel Gauge and Temp Gauge not working

Postby MadMC63 » Wed Nov 23, 2016 12:47 pm

All of this is superfluous right now anyway you said you weren't using the fuel gauge. Just attach your feed wire to the temp gauge.
1971 Dodge D100
So what's wrong with setting beneath a single pull string incandescent light bulb writing angry letters?
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Re: Fuel Gauge and Temp Gauge not working

Postby PwrWgnDrvr » Wed Nov 23, 2016 1:23 pm

If the factory limiter is a dead short, it is no different than a wire and connecting the new 5V supply to either terminal is the same. If the factory limiter is open, then connecting to the 12V side will not work and u MUST connect to the gauge side.
If by chance the factory limiter is still operating, then connecting 5V to the 12V side may reduce the 5V by 60% and u will only have 2V rather than 5V at the gauge side.
Save yourself a lot of hassle and connect your new limiter to the gauge side. U must be sure no 12V remains connected to the 12V terminal.
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Re: Fuel Gauge and Temp Gauge not working

Postby GMAN69 » Sat Nov 26, 2016 12:59 pm

Have you checked your 12v under load key on everything hooked up. I have seen full12v and under load drop to 0v. My 2 cents
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Re: Fuel Gauge and Temp Gauge not working

Postby cometphoton » Fri Dec 16, 2016 12:12 pm

Thanks a bunch for the knowledge as it is power for sure. I had the same problem; voltage limiter bit the dust in my 69 W200. Mouser send me the parts in a jiffy and today I'm ready for the acid test. Thanks again ! What a great Form.
Ski Fast, Sail sound, and shoot straight !
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Re: Fuel Gauge and Temp Gauge not working

Postby pgillott » Fri Dec 16, 2016 4:28 pm

Anybody have a Fuel Gauge for sale?
thanks in advance
pete
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Re: Fuel Gauge and Temp Gauge not working

Postby martin1953 » Wed Jan 25, 2017 5:56 am

I see Mopar limiters for sale on ebay. Will any of these work for the fuel/temp. gauage issues listed in this post? Can anyone provide a schematic to install?
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Re: Fuel Gauge and Temp Gauge not working

Postby pgillott » Wed Jan 25, 2017 6:52 am

Anybody have a fuel gauge for sale?
Thanks in advance.
pg
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Re: Fuel Gauge and Temp Gauge not working

Postby dodgeboykim » Wed Jan 25, 2017 4:27 pm

pgillott wrote:Anybody have a fuel gauge for sale?
Thanks in advance.
pg



I do. PM me
My truck is younger than me.
66 W100. 70 D 500 with 69 Hiab Speed Loader. 96 Ram 3500 Club Cab Cummin's 5 spd. 97 Ram 1500 Club Cab 5.9 gas auto. 83 W200 L/B 360 auto on propane.
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