Another Fuel gauge question
 

I've read the other threads, but they are a bit like German stereo instructions.

When i put a tester on the sending unit post, its grounded. In other words, my meter tones when i have one lead on the sending unit post and the other on a ground.

when i take the wire off the post the gauge goes to 3 oclock. when the wire is on the post gauge reads empty. So the reading is the same on the wire, and the post.

Any help would be great.

Re: Another Fuel gauge question
 

You need a meter that reads out in ohms as the sending unit should read 0 to 90 ohms if it is working, (0=empty, 90=full).

Jim

Re: Another Fuel gauge question
 

i do have a meter that reads ohms. I guess i'm not understanding whats going on with the sender.

wire off = gauge reads 3pm
wire on = gauge reads empty
meter shows ground at sender post
meter shows ground at wire

HELP?

Re: Another Fuel gauge question
 

Pull the float assy. Take ohms reading picking up the float arm to simulate full should read the 90 ohms then at the bottom 0. During this process your checking only the float for correct readings so the feed wire should be off the post. If you are getting the correct readings your float is good. Trouble shoot the wire back to dash for breaks. If no breaks your problem is the dash Gage or a ground or something like that.
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Re: Another Fuel gauge question
 

from your test, that tells me the fuel gauge is working.
I'll bet the float on the sender has a pin hole in it and it has filled full of gas and sunk (very common) this makes your gauge always read empty. Or it has come off the wire.
Either way you will have to pull the sender out of the tank to find out.

Re: Another Fuel gauge question
 

...or it could be the resistor is bad on the sender. Mine was really scratchy. If you ground the sending wire, it should read empty. With if off, it will read more than full. Senders are pretty cheap. If you do take the sender out, you can check the resistance on it by moving the arm gently and not very far up or down.

Re: Another Fuel gauge question
 

Hopefully VetVette will sign in - he helped me on mine.

If memory serves, if your gauge is reading 9 o'clock with the wire attached, the sender is grounded and needs replacing.