I installed this gauge http://i150.photobucket.com/albums/s102/qwertyuioplkj_2007/autometer_fuel-1.jpg

in the center console and am finding that it is not accurate (at all). I was on the "E" mark this afternoon. I put 9 gallons in, the needle went from "E" to "F".

Is there a way to calibrate these things? :confused:

If it's electric then maybe a bad ground?

If it's electric then maybe a bad ground?

Yes, it's electric.

It doesn't jump. It seems to move slowly as fuel is used, but it's range seems to be only about half of the tanks capacity :confused:

First things first, check the part number and look it up at autometer.com.
Chevy's use a 90 ohm gauge.
Some cars use a 220 ohm, and there are others too. If you got the wrong gauge, it won't read right.

You can test the gauge by grounding the sending unit wire through a 90 ohm resister. This can be done in the trunk easily, disconnect the sender wire from the plug, stuff one end of the resister in the plug, and ground the other end (the screw for the bracket that holds the trunk lock in is handy), The gauge should read just on F. If radio shack doesn't have a 90, get something close, more ohms will swing the needle a lil past full.

What kind if gauge did you have b 4, and did it read right?

Maybe you got the 30 ohm gauge from Autometer (Designed for earlier GM cars like my 63 Nova). Thus filling up would hit 30 ohms well before full.
I have the 90 ohm Autometer gauge in my center console, it seems to work well.

Maybe you got the 30 ohm gauge from Autometer (Designed for earlier GM cars like my 63 Nova). Thus filling up would hit 30 ohms well before full.
I have the 90 ohm Autometer gauge in my center console, it seems to work well.

I have a feeling you are correct. :(
I've got an email in to where i purchased it from ( FireWheel ) to see if they can help with a part number. (i don't have the packaging anymore)


Thanks for all the helpful responses :yes: :cool:

I bought my set from Firewheel Classics out here in Texas, they provided me the correct 1315 meter when I bought it. I would use an ohm meter and check what you are getting from the sender in the tank, that might have gone bad.

Yep, DMM tested it this afternoon.

31.7 Ω

Dang it !!

I see a 1315 on eBay for $36 shipped. I guess i should get it.

:(

You could try putting a 56 Ohm resistor in paralell with the sender. That would get the resistance in the right range, but I haven't tried it myself. I'd get a 1/2Watt resistor to try - hopefully it won't burn up :D (keep it away from flamables).

I thought of the parallel resistor as well..56 ohm would work but only to show when its full. At 1/2 tank it would still be sending 25 ohms to the gauge which would show as 83% and at 1/8 actual tank volume (12.5%), show 31%, definately NOT what you want. A closer single parallel resistor of 45 ohms would give the perfect full tank but 1/2 actual would still be showing as 3/4. (75%)

I grabbed that 1315 off ebay.

Hopefully in a week or so i'll have this all fixed.

:hurray: