|
|
|
|
| Author |
|
|
Recreational Mechanic
|
Does your fuel gauge fluctuate?
My fuel gauge fluctuates when I go over bumps, it seems to follow the gas sloshing around in the tank. Is this normal or do I need a new fuel tank sender?
I searched the archives, but can find no previous post on this.... Thanks!
__________________
P Cars: 2022 Macan GTS / One empty garage space ---- Other cars: 2019 Golf R 6MT / 2021 F-250 Diesel / 2024 Toyota GR86 6MT ---- Gone: 1997 Spec Boxster Race Car, 2020 GT4, 2004 GT3, 2003 Carrera, 1982 911SC, 2005 Lotus Elise and lots of other non-Porsches PCA National DE Instructor #202106053 / PCA Club Racing / WRL Endurance Racing |
||
09-04-2012, 01:05 PM
|
|
|
Registered
Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,484
|
the float rides the waves, so yes, normal.
__________________
https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
||
|
09-04-2012, 02:36 PM
|
|
|
Registered
Join Date: May 2001
Location: Tarzana, CA / Oxnard, CA
Posts: 967
|
There is an aluminum tube in the tank that somewhat "buffers" the movement of the needle in the gauge. If that tube is gone or has fallen from its mounting, the gauge will be much more erratic.
__________________
Ron '88 Coupe (formerly) |
||
|
09-04-2012, 03:48 PM
|
|
|
Registered
|
Mine's relatively stable. The oil gauge, however, resembles a toy boat in pool full of cannonballers.
__________________
'87 911 Carrera Coupe (go fast, small parts / small kids hauler) '04 Toyota Land Cruiser (go slow, go anywhere, haul everything, the "AntiPrius") |
||
|
09-04-2012, 03:57 PM
|
|
|
Registered
Join Date: Jul 2010
Location: Yakima, WA
Posts: 421
|
Quote:
__________________
Ryan- Sad day when my 83 911 left me 
|
||
|
09-05-2012, 01:56 PM
|
|
|
Registered
|
Mine fluctuates because of a grounding irregularity somewhere between the ground contact on the back of the gauge and the innards. There are a few thread on this. Cleaning the contact to improve things did not fix it. The 'erraticness' is worse when it is near empty. I can trust that low fuel light however. It goes on and off depending on how long I pull G's to the left or right. The small holes which allow the fuel into the aluminum tube slow the response to be appropriate. My Oil sender shows the oil level come up with warmth and with idle - fairly steady and predictable.
I bought a new fuel sender and it isn't any different than the original. I still have the original if anyone needs it - send a PM with an offer.
__________________
75 911S Targa - Mine from 2001 until sold to Germany buyer 10/2016 <ALL DIY> Brakes/Wheels '01, Body/paint/restoration 7/04, Suspension 3/07 Engine rebuild - done 7/08 - added 28 tube cooler and SSIs - running strong. Ducktail painted. 2021 MachE, 2012 Outback, 2019 Crosstrek, 2018 Impreza wagon Last edited by notmytarga; 09-05-2012 at 02:52 PM.. Reason: Mentioned other threads |
||
|
09-05-2012, 02:52 PM
|
|
|
|
Recreational Mechanic
|
Quote:
I put in a fuel sender (new to me/used) about 10 years ago in conjunction with my front end wreck repair (bought the car wrecked and repaired myself...with a little help from a Porsche certified frame shop). Anyhow it has been eratic since day one, but I am pretty sure the sender I put in was a good one. I'll check the ground on the back of the gauge. It's good to know that I should not waste my time/money installing a new sender.
__________________
P Cars: 2022 Macan GTS / One empty garage space ---- Other cars: 2019 Golf R 6MT / 2021 F-250 Diesel / 2024 Toyota GR86 6MT ---- Gone: 1997 Spec Boxster Race Car, 2020 GT4, 2004 GT3, 2003 Carrera, 1982 911SC, 2005 Lotus Elise and lots of other non-Porsches PCA National DE Instructor #202106053 / PCA Club Racing / WRL Endurance Racing |
||
|
09-05-2012, 04:12 PM
|
|
911SC 3.0
Targa
