Fuel gauge ?

[moparsky]

I have a 67 GTX w/440 with gas gauge problems.
SOme bacj ground, I had let the car sit for several years & of course the fuel went bad and messed up the sender. I am on my second sender with the same results, the dash gauge reads barely over the half mark with a full tank. I know the fuel gauge is not adjustable, is it merely a matter of bending the float arm to adjust how it reads ????? I had read on another Mopar forum that this is a common problem with most aftermarket fuel senders, is that true ?

John

 

[Histoy]

I've run into the same problem with replacement sending units. Here are some things to try:
Disconnect the wire from the sending unit and temporarily ground the wire to the frame. Check the fuel gauge and it should read Full. If not, either you don't have a good ground, or the fuel gauge is bad.

If the gauge reads Full, put the wire back on the sender and run a temporary ground wire from the frame to the sending unit. (The little metal strap from the sending unit to the fuel line is suppose to form this ground, but sometimes it is missing or has a poor connection). If the fuel gauge reads Full, make the temporary ground wire permanent.

If the fuel gauge still reads incorrectly, remove the sending unit, hook it up to the wire going to the fuel gauge and ground the sending unit with a wire to the frame. Move the sending unit to the Full position, and check the fuel gauge. It should read Full, if the sending unit is working properly.

If the fuel gauge reads Full, then you will have to bend the float arm down to get the gauge to read Full when the tank is full. We try to have the gas tank about 1/2 full when we install a new sending unit. We install the new unit and if the gauge doesn't read 1/2 full, then we remove the unit and bend the arm to get the gauge to read 1/2 full. This usually gets the gauge to read Full with a full tank of gas.

Good luck!

 

[moparsky]

Thanks History,

I will try these suggestions & see how the fuel gauge responds.


John

 

[7DRRunner]

if you don't mind a slight thread hijack, I have a quick question maybe someone else can field, relating to fuel gauges

I have a 70 RR, and double checked that the grounding strap is there and connected properly and I have replaced the sending unit with an entirely new one

still I can fill the gas tank to the top, but still have no reading (it's on dead empty)

what's my next step ?

 

[Histoy]

Take the wire off of the sending unit and ground it to the frame with a jumper wire. Turn on the ignition, and the fuel gauge should go all the way up to full. If it doesn't, then quite often, the fuel gauge is bad. (I'm assuming that the wire from the sending unit isn't broken, and is attached to the fuel gauge).

 

[Plymouthfan]

I just went through this. New unit reading 3/4 FULL. I removed the sending unit, then had to bend the float down. It only took 1/8" to 1/4" to get it to read FULL.

 

[scottlanes]

does anyone know the resistance of the stock send unit for a 68 satellite? Is the same send unit used for all models for a given year? I was looking at some of the aftermarket units and there are a variety of resistance ranges to choose from so i was wondering what the heck the stock unit used

thanks!

-scott

 

[GTX MATT]

When I bought my Satellite last spring it read 1/4 tank with a full tank. Surprised the hell out of me the first day I drove it, went to Sunoco to tank up before school, told the man 40 bucks to fill it. It kept clicking off because of the silly bend in the 66 and 67 filler tube. Well I'd keep going again. It got up to the top around 5 bucks without me realizing it and I kept trying to go and it started running out on the ground!

Went home after school. I assumed sending unit/float or something. My old man asked if I wanted him to look behind the dash. I said do what you want, doesn't bother me but I dont understand what youre trying to find. He looked, got a small peice of sand paper and said im gonna poke around. I said whatever, dont break anything. He started just scuffing the electronic thingys that were on the back of the fuel gauge (sorry I dont know what the technical names are!) and said alright see what it does. I fired it up and it was at a half tank. I was amazed. We messed with it some more and got it to read 3/4 full at full and empty is a quarter below E. I said its fine leave it like that, some more poking around and it may actually read correctly.

Im afraid to replace the sending unit to go to a 3/8 line because I dont want to wind up with a chinese junk sending unit that wont work, mines not perfect but I do know how much gas I have based on it.

 

[1969 Roadrunner Y2]

Can the fuel sender be removed with tank in car?

I know this is an old thread, but the question I have is whether or not the fuel level sender can be removed from the tank with the tank still in the car.

Yes, I would get the fuel level as low as possible.

Any advice would be appreciated.

 

[watermelon]

I know this is an old thread, but the question I have is whether or not the fuel level sender can be removed from the tank with the tank still in the car.

Yes, I would get the fuel level as low as possible.

Any advice would be appreciated.

The answer is Yes. Wear eye protection cause stuff will fall down.



watermelon