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  #1  
Old 06-08-2014, 11:29 AM
radarwhiz's Avatar
radarwhiz radarwhiz is offline
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Fuel gauge fix w/pics

For quite a while now my fuel gauge has been working only intermittenly and gradually getting worse until it just stopped working altogether.
So I pulled out the sender unit and took it apart. The issue is that the wiper arm of the potentiometer loses its tension and failes to make contact anymore.


Here are both floats removed from the tank:



To remove the potemtiometer, unclip at the arrows:



Inside. Pry the wiper arm assembly off the shaft (make note of its position in relation to the float arm for reassembly):



Bend the wiper arm and other two contacts downward slightly enough to make contact again:



Press back onto the shaft and ensure that all three points are making good contact.
Do both sides and reinstall them in the tank.
This resolved my problems, I hope it works for anyone else who tries.
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'08 ML550 daily driver
'13 F150 work truck
'87 MR2 racecar
'92 Lsl Claret 5sp

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  #2  
Old 06-08-2014, 11:42 AM
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SURTEESS SURTEESS is offline
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Re: Fuel gauge fix w/pics

Should put this & also my fix for the JDM Aircon into the "how to" section...
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1995 LSI, Added the following - Gear Firm-Up unit (that I sell) together with Power TCU ROM & Power switch, K&N air filter, SVX side badges (USA type), Rear Deck Blower (JDM type), Side front markers (USA type), Side rear markers (USA type), Middle rear light (USA type), USA OEM Fog Lights fitted into NZ OEM glass (NZ OEM headlights had only reflectors fitted) Full set of yellow (90SH) Polish bushes includes 15 min mod, R1 Concepts drilled/slotted/gold finish rotors & Red covered braided brake lines (both from Dayle at Motorsport warehouse), EBC Redstuff brake pads. Full SVX bra (only used for shows). Koni adjustable inserts fitted inside OEM strut body, Zoom lowering springs (2" lower), OEM headlight washers fitted.
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  #3  
Old 06-08-2014, 07:51 PM
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fasteract7 fasteract7 is offline
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Re: Fuel gauge fix w/pics

Nice...appreciate your time posting this DIY







Quote:
Originally Posted by radarwhiz View Post
For quite a while now my fuel gauge has been working only intermittenly and gradually getting worse until it just stopped working altogether.
So I pulled out the sender unit and took it apart. The issue is that the wiper arm of the potentiometer loses its tension and failes to make contact anymore.


Here are both floats removed from the tank:



To remove the potemtiometer, unclip at the arrows:



Inside. Pry the wiper arm assembly off the shaft (make note of its position in relation to the float arm for reassembly):



Bend the wiper arm and other two contacts downward slightly enough to make contact again:



Press back onto the shaft and ensure that all three points are making good contact.
Do both sides and reinstall them in the tank.
This resolved my problems, I hope it works for anyone else who tries.
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  #4  
Old 06-08-2014, 07:58 PM
radarwhiz's Avatar
radarwhiz radarwhiz is offline
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Join Date: Nov 2008
Location: Clarksburg, WV
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Re: Fuel gauge fix w/pics

No problem at all. I just hope this is clear enough and helps others if they are having this issue. I'm also not sure that this will be a guaranteed fix but it's worked 2 for 2 so far and I'll try it on a third known bad one just to be sure.
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'08 ML550 daily driver
'13 F150 work truck
'87 MR2 racecar
'92 Lsl Claret 5sp

"Be kind to your motor car." - Jackie Stewart
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