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  #1  
Old 09-28-2004, 09:39 AM
DLewis DLewis is offline
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Gas gauge 95 Maristar

The gas gauge needle has been stuck on 1/4 tank mark for several weeks. After reading several posts on gas gauge issues I pulled the sending unit from the top of the tank. Once I pulled it out, I removed the two screws holding trim plate off the bottom of the sending unit. I could see a mechinism (float?) slid up and down when you tilt the sending unit side to side. The fact that the float within the sending unit seems to work, does this point to the gauge itself, possible bad ground or both? (Once I reinstalled the sending unit, the gas gauge needle went from 1/4 to empty - where it has stayed ever since.)
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Old 09-28-2004, 10:16 AM
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Take the float out and move it up and down with the key on while connected to the gauge. Your gauge should move up and down.
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Old 09-28-2004, 02:46 PM
DLewis DLewis is offline
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Thanks for the 'common sense' approach. I was trying to make it harder then it needed to be.
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Old 09-28-2004, 03:19 PM
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SkySkiSpokane SkySkiSpokane is offline
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It is probably your sendng unit. the tube style ones they made in those year sucked!! I know from experience with my 95 prostar. Get an arm style one. Seems to work much better!!
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Old 09-28-2004, 03:38 PM
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Quote:
Originally Posted by SkySkiSpokane
It is probably your sendng unit. the tube style ones they made in those year sucked!! I know from experience with my 95 prostar. Get an arm style one. Seems to work much better!!
Now wait a second, Dave. I thought you said yours is consistantly 1/4 tank off.
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Old 09-28-2004, 03:46 PM
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That is true!! but it doesn't stick like my old tube one did all the time. I need to calibrate it big time though hahaha! I'll get to that someday
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Old 09-28-2004, 03:55 PM
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AirJunky AirJunky is offline
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Hey, my flag in the fill hole method hasn't stuck yet!

So how do you calibrate the gas guage?
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Old 09-28-2004, 03:56 PM
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If you hear the float move up and down but don't see any change, it could be that the magnets fell out of the float and are stuck to the circuit board at the 1/4 tank mark. The magnets can be glued in again, but it needs to be impervious to gasoline and similar solvents.

Before you pull the sender, turn the key on and remove one of the wires on it. If the gauge zeros out, it's the sender.
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Old 09-28-2004, 04:01 PM
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I dunno. I think that I need to take it apart and redo the arm but it is kinda nice to have 1/4 of a tank left when the gauge is on "E". Ideas??
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Old 09-28-2004, 04:01 PM
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Hmmmm, someone who actually knows? Hey Jim, I have a '94 & just this summer the gas guage has stopped working. It's sitting at just over 1/4 tank all the time now. If I turn the key off, it zeros but otherwise it sits at the same point all the time.
Any idea what the problem is?
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