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Fuel gauge twitchy

 
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Rob the plumber  



Joined: 25 Aug 2008
Posts: 122
Location: Utica, Michigan

PostPosted: Tue Aug 26, 2008 8:29 am    Post subject: Fuel gauge twitchy Reply with quote

Is it a common issue to have a fuel gauge that bounces around and "ticks"? My temp gauge does it a little bit too, but the fuel gauge is all over the place. I just picked this car up yesterday, so I have a lot to learn.

Thanks!
Rob
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ideola  



Joined: 01 Oct 2004
Posts: 15550
Location: Spring Lake MI

PostPosted: Tue Aug 26, 2008 11:28 am    Post subject: Reply with quote

Yep. Pretty common. You can address it by cleaning the grounds and also by cleaning the fuel sender, which our own (local to you and I) 924RACR published a how-to on.

Suggestion: list the model year and specific variant of your car (e.g. "1980 NA" for normally aspirate, "1982 931" for a turbo, etc.) in your sig so we all have easy reference to it when you post...guarantee, you'll never remember to remind us in all of your posts

Welcome aboard! There's a few of us here in SE MI...we need to do a fall get together soon...

{EDIT} Oops here's the link to the fuel sender fix: http://www.924.org/techsection/gas_sender.htm
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Peter_in_AU  



Joined: 29 Jul 2001
Posts: 2745
Location: Sydney, Australia

PostPosted: Tue Aug 26, 2008 11:05 pm    Post subject: Reply with quote

try cleaning the external fuel sensor/float contacts before you pull the sensor out and clean it. A standard problem after all these years.
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1979 924 (Gone to a better place)
1974 Lotus 7 S4 "Big Valve" Twin-cam (waiting)
1982 924 (As featured on Wikipedia)

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AlexG  



Joined: 15 Jan 2008
Posts: 13
Location: UK

PostPosted: Wed Aug 27, 2008 7:47 am    Post subject: Reply with quote

Also check the condition of the shared earth point along the chassis beam at the rear of the car (i.e. between the rear lights) - after doing everything else I discovered this was where the fault was on mine
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Peter_in_AU  



Joined: 29 Jul 2001
Posts: 2745
Location: Sydney, Australia

PostPosted: Wed Aug 27, 2008 8:15 am    Post subject: Reply with quote

Here's the How-To

http://www.924board.org/viewtopic.php?t=24372

There's also instructions about for cleaning the sensor but try the simple stuff first.
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1979 924 (Gone to a better place)
1974 Lotus 7 S4 "Big Valve" Twin-cam (waiting)
1982 924 (As featured on Wikipedia)

Learn to love your multimeter and may the search be with you
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Rob the plumber  



Joined: 25 Aug 2008
Posts: 122
Location: Utica, Michigan

PostPosted: Wed Aug 27, 2008 10:59 am    Post subject: Reply with quote

Thanks a lot for the help. I will do as suggested asap and get back with the results.
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