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Fuel Guage "floating"
#1

The past two times I've had the car out I've noticed the fuel gauge "floats" about 1/8 tank above and below the actual reading. Are there any normal causes of this condition? It happens no matter how much fuel is in the tank. [img]style_emoticons/<#EMO_DIR#>/blink.gif[/img]
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#2

I'm not sure how the 968's fuel sender work,and PET is not very enlightening on this, but I know in my 356 this happened when the fuel in the tank splashes around. I believe modern cars have electronics to even out the signal, so my guess is that you fuel sender is not working correctly anymore
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#3

there is a baffle in the tank that is there to prevent the sender from getting bounced around and has been known to pop loose - that is probably what happened
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



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#4

I had problems with both fuel and temp gauges bouncing. Resolved this by tightening the nuts on the back of the gauges which I believe are the earth connections to the printed circuit.
Alex
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#5

if it "bounces" (quicker change) it's probably electrical - if it "floats" (slower change) it's probably mechanical
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



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#6

It definately floating. And it does seem to be related to the fuel moving in the tank. Going up or down rolling hills on the highway can cause it, even a slight decline going out of the driveway. I know the level will change some when on an incline but this happens on anything other than perfectly level ground.

Flash, how hard is it to get to this baffle? I would check the manual or pet but don't have either of them at work.
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#7

pretty sure you've got to drop the tank - that means dropping the transaxle
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



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#8

In my 92 it is possible to acces the floater from above the tank. The entrance is under the carpet in the trunk. But it's a tip, Don't know if a 6 speed is different.
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#9

i don't think it's any different - i know the sender is there at the top, but i'm not sure about the baffle
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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#10

Is the baffle welded or bolted in? I hope I can get to it from the top, I'm not really in the mood for pulling the transaxle.
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#11

since it's a plastic tank, i'm not sure
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94 Midnight Metallic Blue Cab Porsche 968 w/deviating cashmere/black interior and WAY too many mods to list - thanks to eric for creating www.968forums.com



"It isn't nearly as expensive to do it right as it is to do it wrong."
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