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-   -   Bouncing gas guage (https://67-72chevytrucks.com/vboard/showthread.php?t=594020)

cameyer 08-24-2013 02:29 PM

Bouncing gas guage
 
So I have finally finished installing my under bed gas tank from lmc and have it filled up however I have found the gas gauge bounces around a lot. Since my gas guage never work I don't know if this is normal for this truck so hopefully some one can help. The gauge fluctuates as much a quarter of a tank when I go over bumps
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Sharps40 08-24-2013 03:49 PM

Re: Bouncing gas guage
 
Normal. Enjoy it, it works!!!!! Gotta buy 2013 cars for a steady gas gauge. :)

NCD1966 08-24-2013 05:12 PM

Re: Bouncing gas guage
 
i'll take a bouncy one anyday; mine just pegs out pass full all the time.

its not an old sending unit and its not stuck either (i checked)
not sure whats the deal

VonDog 08-24-2013 05:49 PM

Re: Bouncing gas guage
 
Quote:

Originally Posted by NCD1966 (Post 6236663)
i'll take a bouncy one anyday; mine just pegs out pass full all the time.

its not an old sending unit and its not stuck either (i checked)
not sure whats the deal

Sounds like the contact inside the sending unit control box is stuck! I yanked mine out cuz it didn't work at all and found that the box had broken open and the copper inside the wasn't making contact so I soldered it back together, made sure the contact was positioned right, and soldered the small box back together, installed and everything works now. Good luck!

yelmer 08-24-2013 06:41 PM

Re: Bouncing gas guage
 
some of the after market sending units use the wrong ohms? current to the gauge . if you can find a original good unit might be the way to go if you are having problems .

Sharps40 08-24-2013 06:44 PM

Re: Bouncing gas guage
 
Quote:

Originally Posted by NCD1966 (Post 6236663)
i'll take a bouncy one anyday; mine just pegs out pass full all the time.

its not an old sending unit and its not stuck either (i checked)
not sure whats the deal

Maybe 0 to 90 ohm sender on a 0 to 30 ohm gauge....?

61_FL_Apache 08-24-2013 06:48 PM

Re: Bouncing gas guage
 
When it stops bouncing, that means to look for a gas station.... QUICK!! :)

cameyer 08-24-2013 07:05 PM

Re: Bouncing gas guage
 
The sending unit is brand new. I didn't look very closely at it just popped it in should u take it out an examine it? I have the bed off right now so I'm trying to get everything perfect before the bed goes back on
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VonDog 08-24-2013 08:25 PM

Re: Bouncing gas guage
 
I would pull it before you put the bed on and check it with a meter while you work the float!

jtrichard 08-24-2013 10:43 PM

Re: Bouncing gas guage
 
NCD 66 ...with the key/INJ. on ground out the wire at the sending unit and see if dash gauge goes to E if it does then its the sender if it still stays at F then you have an "open" wire to the dash gauge

hotrodder 08-25-2013 02:27 PM

Re: Bouncing gas guage
 
Does the tank have a baffle in it? The fuel sloshing around can cause the float to bob around until it settles down.:metal:


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