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Went through all that for Nothing...Now What?
#185969
01/06/09 07:52 PM
01/06/09 07:52 PM
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Joined: Feb 2006
Posts: 4,102
Cochise County Arizona
SPWC
OP
master
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OP
master
Joined: Feb 2006
Posts: 4,102
Cochise County Arizona
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Well I climberd under my Dart today in an attempt to get my Fuel Gauge working again.Ive already ruled out the gauge actually works ,it swings over to the Full side when the wire is grounded and the key in the "on" position.I never let it "peg" as I was warned not to do that.
I proceed to remove the sender from the tank,replaced the float(I suspect the original is faulty,though I hear no liquid inside when I shake it.)I replaced the sock while I was there,but kept all the old parts as they appear to be in decent condition.
I also replaced the sending unit gasket.Got everything buttoned back up.I hook up the fuel line,the ground strap I had brazed back together and then hook up the sending unit wire.Climb out from underneath, Turn the key to the "ON" position and the fuel gauge doesnt do a Darn thing,no movement whatsoever.
So Now what? Any Suggestions?
I find it wierd that my temp gauge is acting "somewhat" the same.
After driving I can shut the engine off,turn the key to the "On" Position and watch the temp climb,fire the car up and start driving and it drops again to 120* and stays there. Could this be an indicator of something amiss in the back of the instrument cluster?
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Re: Went through all that for Nothing...Now What?
[Re: SPWC]
#185970
01/06/09 08:00 PM
01/06/09 08:00 PM
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Joined: Feb 2003
Posts: 16,146
Mesa, Arizona
dart4forte
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 16,146
Mesa, Arizona
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Quote:
Well I climberd under my Dart today in an attempt to get my Fuel Gauge working again.Ive already ruled out the gauge actually works ,it swings over to the Full side when the wire is grounded and the key in the "on" position.I never let it "peg" as I was warned not to do that.
I proceed to remove the sender from the tank,replaced the float(I suspect the original is faulty,though I hear no liquid inside when I shake it.)I replaced the sock while I was there,but kept all the old parts as they appear to be in decent condition.
I also replaced the sending unit gasket.Got everything buttoned back up.I hook up the fuel line,the ground strap I had brazed back together and then hook up the sending unit wire.Climb out from underneath, Turn the key to the "ON" position and the fuel gauge doesnt do a Darn thing,no movement whatsoever.
So Now what? Any Suggestions?
I find it wierd that my temp gauge is acting "somewhat" the same.
After driving I can shut the engine off,turn the key to the "On" Position and watch the temp climb,fire the car up and start driving and it drops again to 120* and stays there. Could this be an indicator of something amiss in the back of the instrument cluster?
The voltage regulator on the back of the gauge panel may be corroded or amy be shorting out
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Re: Went through all that for Nothing...Now What?
[Re: SPWC]
#185972
01/06/09 08:03 PM
01/06/09 08:03 PM
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
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When you had the sender out of the tank did you hook it up to a ground, turn on the key, and manually move the float. If the sender is good the gauge should have registered with the movement of the float when you moved it.
Clean it, if it's Dirty. Oil it, if it Squeaks.
But: Don't fix it, if it Works!
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Re: Went through all that for Nothing...Now What?
[Re: 6T6Cuda]
#185974
01/06/09 08:15 PM
01/06/09 08:15 PM
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Joined: Jan 2003
Posts: 1,482
Lake Orion, MI
goldduster318
pro stock
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pro stock
Joined: Jan 2003
Posts: 1,482
Lake Orion, MI
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you'll also want to make sure you actually have a connection (continuity) between the plug on the back of the gauge cluster and the sending unit plug. It could have a bad or no connection, in which case your fuel gauge would never work.
'70 Duster 470hp 340/T56 Magnum/8 3/4 3.23 Sure-Grip
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Re: Went through all that for Nothing...Now What?
[Re: dart4forte]
#185977
01/06/09 09:06 PM
01/06/09 09:06 PM
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Joined: Jan 2003
Posts: 10,968
Hampton, Ga.
70dart360
Green Meister
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Green Meister
Joined: Jan 2003
Posts: 10,968
Hampton, Ga.
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Quote:
Quote:
Well I climberd under my Dart today in an attempt to get my Fuel Gauge working again.Ive already ruled out the gauge actually works ,it swings over to the Full side when the wire is grounded and the key in the "on" position.I never let it "peg" as I was warned not to do that.
I proceed to remove the sender from the tank,replaced the float(I suspect the original is faulty,though I hear no liquid inside when I shake it.)I replaced the sock while I was there,but kept all the old parts as they appear to be in decent condition.
I also replaced the sending unit gasket.Got everything buttoned back up.I hook up the fuel line,the ground strap I had brazed back together and then hook up the sending unit wire.Climb out from underneath, Turn the key to the "ON" position and the fuel gauge doesnt do a Darn thing,no movement whatsoever.
So Now what? Any Suggestions?
I find it wierd that my temp gauge is acting "somewhat" the same.
After driving I can shut the engine off,turn the key to the "On" Position and watch the temp climb,fire the car up and start driving and it drops again to 120* and stays there. Could this be an indicator of something amiss in the back of the instrument cluster?
The voltage regulator on the back of the gauge panel may be corroded or amy be shorting out
Nope, the temp gauge is working too. Pull the fuel sending unit and test it with an ohm meter, no fuel in the float and the ground test saying the gauge works leads me to think the sending unit itself is shot.
70 Dart Swinger
72 D-100 440 shortbed
76 Pinto, 68k 21mpg!
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Re: Went through all that for Nothing...Now What?
[Re: SPWC]
#185981
01/06/09 09:43 PM
01/06/09 09:43 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
HOLD ON!!!
Let me ask a REALLY dumb Question. Enclosed I have a pic of a sending unit from Autozone from thier online catalog.It shows a wire(you see it?)
I got to looking at the sending unit I pulled out and reinstalled and there was no wire,and I remember thinking to myself "how does this thing register?" I also saw 2 places with male electrical spades thinking that maybe an "optional" wire went to these.
Guess what im asking is...My sending unit doesnt have the wire like what is pictured,is this normal,or do I need to install that wire?
Yes the wire needs to be there.
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Re: Went through all that for Nothing...Now What?
[Re: MoparforLife]
#185982
01/06/09 09:45 PM
01/06/09 09:45 PM
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Joined: Feb 2006
Posts: 4,102
Cochise County Arizona
SPWC
OP
master
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OP
master
Joined: Feb 2006
Posts: 4,102
Cochise County Arizona
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Quote:
Back to my question: did you verify that the sender works by moving the float with the sender out and grounded watching the gauge while moving the float with the key on
Didnt try that yet,will put the car on stands again tomorrow,pull the sender and give it a whirl.
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Re: Went through all that for Nothing...Now What?
[Re: SPWC]
#185983
01/06/09 09:48 PM
01/06/09 09:48 PM
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Joined: Jan 2003
Posts: 10,968
Hampton, Ga.
70dart360
Green Meister
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Green Meister
Joined: Jan 2003
Posts: 10,968
Hampton, Ga.
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That wire goes from the windings of the sending unit to the post. Without it theres no way it could possibly work.
70 Dart Swinger
72 D-100 440 shortbed
76 Pinto, 68k 21mpg!
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Re: Went through all that for Nothing...Now What?
[Re: 70dart360]
#185984
01/06/09 09:52 PM
01/06/09 09:52 PM
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Joined: Feb 2006
Posts: 4,102
Cochise County Arizona
SPWC
OP
master
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OP
master
Joined: Feb 2006
Posts: 4,102
Cochise County Arizona
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Guess not having done many of these that missing wire is something I overlooked. Wouldnt that be just peachy if the only reason the gauge/sender doesnt work is because a missing wire? If thats the case,kinda makes you wonder just how that wire ended up going away? Now im all fired up,im gonna tear into it tommorrow ,ill report back with my findings(without starting another post as suggested above) Thanks for all your time and knowledge up to this point everybody. 
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Re: Went through all that for Nothing...Now What?
[Re: MoparforLife]
#185987
01/06/09 11:28 PM
01/06/09 11:28 PM
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Joined: Mar 2003
Posts: 15,491
the boonies
aarcuda
I Live Here
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I Live Here
Joined: Mar 2003
Posts: 15,491
the boonies
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Quote:
Quote:
you need a new sending unit. that wire is swedged on with a rivet like thingy. if its missing, most likely you wont get a wire back on. sending units die. its a fact of life. go get a new one and be done with it. just accept that the new one will only read 7/8 full when full though
That can be cured but carefully adjusting the float by slight bends
i bet youre right. i just havent tried it yet. i bet mine it topping out before it should.
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Re: Went through all that for Nothing...Now What?
[Re: aarcuda]
#185988
01/07/09 12:07 AM
01/07/09 12:07 AM
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Joined: Jan 2003
Posts: 10,968
Hampton, Ga.
70dart360
Green Meister
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Green Meister
Joined: Jan 2003
Posts: 10,968
Hampton, Ga.
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The one I got from Advance Auto for $69 is dead nuts correct.Maybe not the case for all of them but the price was right. I did have to use my original lock ring though cause the new one didnt fit tight.
70 Dart Swinger
72 D-100 440 shortbed
76 Pinto, 68k 21mpg!
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