Fuel Gauge

[MarkM66]

Wow, what a challenge just to try to get the fuel gauge to work!

Here's what I've done:

The guage is out and wired directly to the sending unit, as is the sending unit, just so I can trouble shoot this thing. So I know it's wired up right. Sending unit to gauge, power to gauge, and the gauge is grounded. Sending unit is also grounded.

I have a new sending unit, and I tried using the stock gauge. Could not get it to do anything but stay at F, so I figured the stock gauge was bad. So I tried an aftermarket VDO gauge, and I got something. But at E, the gauge would only read 1/2 full. I then got the old original sending unit, and it did the same thing.

I tried another brand of fuel gauge, and it was worse then the VDO, now E read right at F, and full is way past the F.

So aparently when the sending unit is at E, it's still giving amps to the gauge.

Any suggestions? Other then just filling it up all the time and hoping not to run out of gas, because that's what I'm thinking, .

[XcYZ]

Mark, is it a GM 90 ohm sending unit? An open circuit will read as Full.

Have you put a ohm meter on the sending unit?

[MarkM66]

Originally Posted by XcYZ

Mark, is it a GM 90 ohm sending unit? An open circuit will read as Full.

Have you put a ohm meter on the sending unit?

It should be, it's a replacement for the vehicle.

Haven't put a ohm meter on it yet. But even if it's showing power at E, I'm not sure how to fix it other then buying another overpriced POS imported sending unit, .

[MarkM66]

I'm wondering if there is some sort of resitor to get my ohms into a more usable range.

[XcYZ]

If you add resistance (more than 90 ohms), it will read full all the time. Shoot me an e-mail.

[zbugger]

Did you check the wiring and make sure of proper grounds? That just sounds odd....