Author Topic: Fuel gauge woes  (Read 4423 times)

Offline HP_Cuda

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Re: Fuel gauge woes
« Reply #15 on: May 25, 2016 - 05:47:39 PM »

You have a point there. I'll rig up a ground to see if she comes alive.

Check for regulator voltage at the temp sender connector. Easy to get at.  :2cents:
Just a thought. You recently put all this together. It is important that the gauge cluster has a good ground through the mounting screws. It is possible you don't have a good ground(all gauges not working). It would be worthwhile to attach a temporary extra ground to the gauge cluster just to make sure. (jumper wire with alligator clips)
1970 Cuda Clone 440 4 speed - sublime green
1970 Cuda 383 4 speed - yellow - SOLD




Offline js29no

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Re: Fuel gauge woes
« Reply #16 on: May 25, 2016 - 06:22:55 PM »
You should be able to ground your temperature Gage wire, and it will peg out the Gage. that will tell you if that works.   :2cents: but keep in mind I know more about bodywork than mechanical work.

Offline HP_Cuda

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Re: Fuel gauge woes
« Reply #17 on: May 26, 2016 - 05:28:13 PM »

js29

You are the winner!!! I grounded the water temp grommit under the hood and guess what - IT PEGGED!!!

This means I need to ground the gauges and I am in need of a little person with long arms. Man it was a pain to get under the dash to try and ground it.

Thanks all - another mystery solved. Unfortunately it was caused by my overzealous behavior to paint the beejezus out of the dash frame.
1970 Cuda Clone 440 4 speed - sublime green
1970 Cuda 383 4 speed - yellow - SOLD

Offline YellowThumper

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Re: Fuel gauge woes
« Reply #18 on: May 26, 2016 - 08:12:59 PM »
 :thumbsup:  :2thumbs:  :thumbsup:  :2thumbs:
Removing the warning labels one at a time.
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Offline js29no

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Re: Fuel gauge woes
« Reply #19 on: May 27, 2016 - 05:44:41 PM »
Every once in A wile I get something right!!! :woohoo: glad you found it. :2thumbs:

Offline dodj

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Re: Fuel gauge woes
« Reply #20 on: May 27, 2016 - 09:38:13 PM »
You can now ground the fuel sender wire and that gauge should peg as well.
Scott
1973 Challenger  440 4 spd 
2007.5 3500 6.7 Cummins Diesel, Anarchy tuned.
Good friends don't let friends do stupid things. ........alone.

Offline js29no

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Re: Fuel gauge woes
« Reply #21 on: May 28, 2016 - 08:54:54 AM »
And if it does peg your wiring and Gage are good to go.  :2thumbs: 

Offline HP_Cuda

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Re: Fuel gauge woes
« Reply #22 on: May 28, 2016 - 01:39:25 PM »
Now I need to know how folks have mounted a ground to the gauges?

I have circled some areas which might make sense. I circled one half of the ammeter because I have disabled it on mine and tied both inputs to one post.

Thanks!
1970 Cuda Clone 440 4 speed - sublime green
1970 Cuda 383 4 speed - yellow - SOLD

Offline dodj

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Re: Fuel gauge woes
« Reply #23 on: May 29, 2016 - 08:08:29 AM »
If you don't want to scrape some paint off the dash frame, I'd use the screw that attaches the capacitor.
Scott
1973 Challenger  440 4 spd 
2007.5 3500 6.7 Cummins Diesel, Anarchy tuned.
Good friends don't let friends do stupid things. ........alone.

Offline js29no

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Re: Fuel gauge woes
« Reply #24 on: May 29, 2016 - 01:36:02 PM »
You could use never seize when you reassemble, good conductor. :2cents:

Offline HP_Cuda

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Re: Fuel gauge woes
« Reply #25 on: May 31, 2016 - 04:04:28 PM »

gotta love bad news with good news.

I hooked up a ground to the fuel guage and nothing happened, unfortunately it was the opposite effect with the temp gauge.

So knowing the VR supplies both the fuel and temp gauge I know it's not the problem. So before I go ripping out the gauges again to send them off I was thinking of taking a known good voltage limiter wiring setup and try that out.

The one I have checks out on a continuity tester and should be a quick swap.
1970 Cuda Clone 440 4 speed - sublime green
1970 Cuda 383 4 speed - yellow - SOLD

Offline msbaugh

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Re: Fuel gauge woes
« Reply #26 on: May 31, 2016 - 10:27:49 PM »
If the temp gauge maxes out with ground but fuel doesn't then the fuel gauge is shot

Offline js29no

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Re: Fuel gauge woes
« Reply #27 on: June 02, 2016 - 05:36:36 PM »
If the temp gauge maxes out with ground but fuel doesn't then the fuel gauge is shot
:iagree:

Offline HP_Cuda

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Re: Fuel gauge woes
« Reply #28 on: June 03, 2016 - 07:23:45 PM »
If it will cool down a bit I'll rule everything out this Sat.

It will suck to pull the cluster again...
1970 Cuda Clone 440 4 speed - sublime green
1970 Cuda 383 4 speed - yellow - SOLD