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Old 11-21-2004, 03:52 PM
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Fuel Guage Reading wrong

I replaced the circuit board on my dash... 69 gmc.
Prior to replacement, all ok... I was having problems with some of the instrument bulb contacts. Now I put the new circuit board on and my fuel guage reading went off the chart... Did I touch something or am I missing something. It seemed fairly idiot proof... or is it?

thanks in advance...

and I did try to search before asking

billg

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Old 11-21-2004, 05:45 PM
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did the gauge go past the full mark, if so , check the wiring connector or the gauge connections. probably a bad ground.
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Old 11-21-2004, 09:35 PM
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fuel guage

Yes, it was way past full...
empty to full usually shows from say 10 oclock to 2 oclock in degrees... it was at about 4:30 and should have read about half tank... 12 oclock.

Not sure how the ground would be bad...
I will check ground.. thanks a bunch!


billg
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Old 12-11-2004, 05:09 PM
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fuel guage continued..

Follow up to finding my shorts!

I pulled the instrument panel, check my circuit board (its really more of a sheet) and could find no problems or rather solution.

I went so far as to install the old circuit board and it showed the same problem (short) which caused the fuel gauge to read at the 3 o'clock position.

Is there something I'm missing... the new circuit board is fresh, no tears, scratches etc.

Did something possibly happen to the guage?

What sort of tests can I run with a multimeter?

If it is shorting and I only replaced the circuit board should I also be looking at other things to confirm it's the circuit board.

I'm no genious with electrical, but can follow directions well enough...any help is greatly appreciated.

On a side note... Has anyone ever "fixed" a broken vent flap that is inside a deluxe heat system from a 68-72 chevy. I tried purchasing one, but it seems that everyone is out of stock on it... not to mention it's a $80 piece of plastic!

thanks...

Bill G
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