[s-cars] Erratic Fuel Gauge - Archive Searched but still need help

[chris chambers]

Mark,

One of my S4's had your symptoms, ended up being the wire that runs
down to the bottom of the float inside the tank.

I suggest checking to see if this wire is frayed and ready to break,
ours started reading erattic and then wouldn't go off empty.

To get to it you will need to remove the cover held on with three
screws (in the trunk), unhook the fuel lines and unplu the wires. Using
a screwdriver (or chisel) and a hammer tap the rotating ring loose and
remove it. Then you can pull out the float and inspect the wire.


HTH
Chris

--- "Mark E. Pollan" <mark.pollan at mci.com> wrote:
> The problem with the fuel gauge started 2 fill-ups ago.  Filled her
> up and
> the gauge showed full.  Within 5 miles I was at ¾ full.  Freaked and
> pulled
> over fearing gas spewing from someplace detrimental to my well being.
>  Gauge
> pretty much acted normal other than never going above ¾ full.  Same
> thing
> happened on second fill-up other than it never read full.  I am due
> for an
> oil change and am currently running some techron through the tank.
> 
>  
> 
> I found the following in the archives.  # 6 was Bill’s problem.  My
> problem
> is I cannot find the ground back there.  What do I need to remove to
> find
> the ground at the left rear taillight?  I did pull the bulb housing
> but
> other than the multi-connector saw nothing resembling a ground
> connection.
> 
>  
> 
> Regards,
> 
>  
> 
> Mark
> 
> 95.5 S6
> 
>  
> 
>  
> 
>  
> 
>  
> 
> _______________________________________________
> S-CAR-List mailing list
> S-CAR-List at audifans.com
> http://www.audifans.com/mailman/listinfo/s-car-list
>  
> >From w_perron at yahoo.com  Wed Sep 17 12:58:34 2003
> From: w_perron at yahoo.com (William Perron)
> Date: Thu Nov 20 11:51:50 2003
> Subject: [s-cars] '95.5 S6 Fuel gauge problems -- SOLVED
> In-Reply-To: <20030917171921.12824.84103.Mailman at www.audifans.com>
> Message-ID: <20030917185834.49301.qmail at web20005.mail.yahoo.com>
>  
> Erratic/innaccurate fuel gauge summary - no particular
> order
> Lister suggestions/ other research
> 1.  Try Techron in the tank for a possibly gummed up
> float/sender
> 2.  Clean connections at top of pump sender/
> assembly(outside tank)
> 3.  Clean ground at left rear tail light -- I found
> reference to an Audi TSB on erratic
>         or non functioning fuel gauge TSB # 90-94-06
> 4.  Wire becomes frayed in sensor/ float assembly and
> must be repaired
>         http://www.robsaudiworld.com/fuelrepair.htm
> 5.  Clean Fuel gauge sender connector inside tank
>         http://www.audiworld.com/tech/elec.html
> 6. Test gauge by disconnecting pump/sender connector
> at fuel pump access
>         panel.  Jump sender connection terminals at wiring
> connector.
>         40 ohm resistor across terminals should read full
> (ignition on)
>         280 ohm resistor should be empty
> 7. If doing #6, gauge shows correctly- sender is the
> problem
> 8. If #6 does not show accurate gauge readings,
> problem could be in the gauge or IC
>         circuit boards- I didn't get that far.
>  
> On my car, I tried #6 first to see if the gauge read
> correctly, it did.  I then tried #2 and #1 with no
> luck.  Turned out my problem was #3.  After cleaning
> those grounds with really fine
> sandpaper and some Caig DeOxit red contact cleaner,
> may gauge seems to be working correctly - 2 fill ups
> now.
>  
> Thanks to Kirby Smith, Bob Myers, Mark Turczyn, Jim
> Klein and anyone I missed for suggestions.
>  
> -Bill Perron
> '95.5 S6 Avant
> '85 4kq
> Burlington, CT
> 
>  
> 
> _______________________________________________
> S-CAR-List mailing list
> S-CAR-List at audifans.com
> http://www.audifans.com/mailman/listinfo/s-car-list



	
		
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