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fuel gauge does not read correctly

Started by culp71, August 12, 2020, 05:55:59 AM

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340Challman

Quote from: YellowThumper on August 12, 2020, 10:27:19 AM
It would be soooo much easier if they read too full instead of not full enough.
Then all it would take would be a simple in line resistor.

You can install a resistor in parallel with the wiper and that will drop your total resistance. Just need the proper resistance.  :cheers:
Kevin

Bullitt-

.                                               [glow=black,42,300]Doin It Southern Syle[/glow]       

340Challman

Quote from: Bullitt- on August 13, 2020, 10:52:06 AM
If you don't have the patience to figure it out there's a $olution

http://www.tanksinc.com/pdf/MeterMatchInstructionManualTanksInc.pdf

https://www.tanksinc.com/index.cfm/page/ptype=product/product_id=748/category_id=184/mode=prod/prd748.htm

Maybe I'm a little raw from being dragged over the coals earlier today, but did you just call us all idiots? I hope not.
Kevin


Scooter

Quote from: Bullitt- on August 13, 2020, 10:52:06 AM
If you don't have the patience to figure it out there's a $olution

http://www.tanksinc.com/pdf/MeterMatchInstructionManualTanksInc.pdf

https://www.tanksinc.com/index.cfm/page/ptype=product/product_id=748/category_id=184/mode=prod/prd748.htm

That might actually be the most elegant solution in my situation. Aside from the tach & speedo the fuel gauge is the only one on the cluster I still use. The thought of swapping out or adjusting sending units is a fairly unattractive proposition to me.

Thanks for posting up the linky dinky!

Bullitt-

Quote from: 340Challman on August 13, 2020, 11:17:55 AM
Quote from: Bullitt- on August 13, 2020, 10:52:06 AM
If you don't have the patience to figure it out there's a $olution

http://www.tanksinc.com/pdf/MeterMatchInstructionManualTanksInc.pdf

https://www.tanksinc.com/index.cfm/page/ptype=product/product_id=748/category_id=184/mode=prod/prd748.htm

Maybe I'm a little raw from being dragged over the coals earlier today, but did you just call us all idiots? I hope not.

  Whoa down there Tex ...  Not my intent to insult anyone... You mistake me for someone who hasn't dropped the tank on his '98 GT 2 extra times to try & get the reading right..
  From all the posts I've seen on this subject I'm well aware that between inferior replacement units, difficulty in the process and unrealistic expectations this can be a daunting process.
  Just giving y'all what seems to be a relatively simple solution.. 
.
.
One thing I can say for sure is of the dozens of vehicles I was very familiar with back in the day none of the fuel gauges were all that accurate. Generally they would read much more full for the 1st half a tank with the last half running down quickly. I believe this is due to the float not moving off the top of the tank till a few gallons were burned off.. Most important to me has always been to know where empty was on on any given vehicle... 
.                                               [glow=black,42,300]Doin It Southern Syle[/glow]       

Joegrapes

It's not that the new repro units are junk. They do exactly what there're designed to do. I've taken an old original one apart and compared the resistance windings to a new repro unit. The new repro can never read the same as the original one. The new one has a winding plate that is shaped like a rectangle and reads more linear from high to low where as the old one is shaped like a hour glass and doesn't read linear. Ive played with the new by bending the stops and arm and got it to read half a tank when I have exactly half tank of gas. But before and after all bets are off. There is a little black box on the market that will change the ohm values of the sending unit to what ever you set it for but it only does that for I believe four different values.

7212Mopar

Thanks Bullit for the info. I am on my second non factory sender now and still cannot get the gauge to read correct. My gauge will be at empty after only about 7 to 8 gallons of fuel used. This gadget cost less than a sender and I shall give it a try.
1973 Challenger Rallye, 416 AT
2012 Challenger SRT8 6 speed Yellow Jacket


YellowThumper

Life is to be viewed thru the windshield. Not rear view mirror.
You are the only one in charge of your destiny.

Mike.

340Challman

Quote from: Bullitt- on August 13, 2020, 12:08:13 PM


  Whoa down there Tex ...  Not my intent to insult anyone... You mistake me for someone who hasn't dropped the tank on his '98 GT 2 extra times to try & get the reading right..
  From all the posts I've seen on this subject I'm well aware that between inferior replacement units, difficulty in the process and unrealistic expectations this can be a daunting process.
  Just giving y'all what seems to be a relatively simple solution.. 
.
.
One thing I can say for sure is of the dozens of vehicles I was very familiar with back in the day none of the fuel gauges were all that accurate. Generally they would read much more full for the 1st half a tank with the last half running down quickly. I believe this is due to the float not moving off the top of the tank till a few gallons were burned off.. Most important to me has always been to know where empty was on on any given vehicle...

I apologize. I think I'll go have a beer.  :drinkingbud:
Kevin

Scooter

Read the install for the Metermatch, hardest thing for my install would be pegging empty for the most accurate reading. My gauge reads a full tank fine... just drops too fast. I usually just fill it before it hits 1/4 tank. Don't think I've put more than 10 gallons in to top off since I've owned it.  Guess I could toss a few gallons in a can on the boot and drive till it stops...  :D

7212Mopar

The thing is like my car gets around 7 to 8 mpg. On top you don't know when you will step on the fun pedal. The thought of running out of gas is constantly on my mind when driving the car around.
1973 Challenger Rallye, 416 AT
2012 Challenger SRT8 6 speed Yellow Jacket


Scooter

Quote from: 7212Mopar on August 13, 2020, 04:39:23 PM
The thing is like my car gets around 7 to 8 mpg. On top you don't know when you will step on the fun pedal. The thought of running out of gas is constantly on my mind when driving the car around.

I'm probably doing a bit better than that MPG wise... but agree the idea of pushing this thing is not very appealing.  ;)

YellowThumper

Just put it on my Summit list for future purchase. Will post up my dealings with it. Will be in the next couple months though.
Life is to be viewed thru the windshield. Not rear view mirror.
You are the only one in charge of your destiny.

Mike.

culp71

thanks, all good info, I just ordered a meter match , we'll see how that works

Scooter

Quote from: culp71 on August 14, 2020, 09:54:20 AM
thanks, all good info, I just ordered a meter match , we'll see how that works

Please do report back and let us know how it works out.

I'm going to crawl up under mine this week and sort out the ground. Thinking that "clip on" strap my unit has might be the issue.. or part of it.