Welcome to the Australian Ford Forums forum.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and inserts advertising. By joining our free community you will have access to post topics, communicate privately with other members, respond to polls, upload content and access many other special features without post based advertising banners. Registration is simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact us.

Please Note: All new registrations go through a manual approval queue to keep spammers out. This is checked twice each day so there will be a delay before your registration is activated.

Go Back   Australian Ford Forums > Club and Speciality Forums > Forum Community Car Clubs > AU Falcon.com.au

Reply
 
Thread Tools Display Modes
Old 22-05-2010, 10:06 AM   #1
diatribal08
Regular Member
 
diatribal08's Avatar
 
Join Date: Jul 2009
Location: Adelaide
Posts: 107
Default Fuel gauge issues.

Hi having some trouble with fuel gauge, when tank full it reades full but drops down to empty (empty light comes on ) then goes back up to full again around every five minutes. When around half a tank just sits on a third and doesnt move DTE is useless and reads around 500Ks all the time ??? Please Help

diatribal08 is offline   Reply With Quote Multi-Quote with this Post
Old 22-05-2010, 10:20 AM   #2
aussiblue
FG XR6 Ute & Sedan
Donating Member3
 
Join Date: Oct 2006
Location: Bibra Lake WA
Posts: 23,521
Technical Contributor: For members who share their technical expertise. - Issue reason: Has been floating around the oze tech section for a long time and is always there to give advice when people have an issue. 
Default

The sensor it the tank probably needs replacing or adjusting. It has a small arm that moves on a conductive track to vary the resistance to give a reading and that arm can either wear a groove in the track or move away from the track so that it makes intermittent contact.

If minor bumps in the road make the gauge change this is a good sign of the problem. It can sometimes be fixed by bending the arm so that it makes better contact or if it has worn a groove bending it so that it is no longer in the groove. However, given the hassle involved in removing the sender to repair it, it best just to replace it. And while a sparking shorting sender unit arm sitting in fuel fumes as it makes intermittent contact with the conductive track is not as actually as dangerous as it sounds, it something I prefer to avoid.

Also check the wiring harness plug closest to the sender is not damaged or loose.
__________________
regards Blue
aussiblue is offline   Reply With Quote Multi-Quote with this Post
Old 22-05-2010, 11:22 AM   #3
diatribal08
Regular Member
 
diatribal08's Avatar
 
Join Date: Jul 2009
Location: Adelaide
Posts: 107
Default

Cheers aussieblue what if gauge goes up and down car stationary and not running ??
diatribal08 is offline   Reply With Quote Multi-Quote with this Post
Old 22-05-2010, 11:29 AM   #4
aussiblue
FG XR6 Ute & Sedan
Donating Member3
 
Join Date: Oct 2006
Location: Bibra Lake WA
Posts: 23,521
Technical Contributor: For members who share their technical expertise. - Issue reason: Has been floating around the oze tech section for a long time and is always there to give advice when people have an issue. 
Default

Quote:
Cheers aussieblue what if gauge goes up and down car stationary and not running ??
Often a bad earth check the earth wires at the battery - with ignition on have someone gently wiggle or shake them while you watch the gauge. Then do the same with the wiring harness under the dash and above the steering column.

Then try bouncing the car at the rear while you watch the gauge - if it moves it will point at the sender.
__________________
regards Blue
aussiblue is offline   Reply With Quote Multi-Quote with this Post
Old 22-05-2010, 12:41 PM   #5
diatribal08
Regular Member
 
diatribal08's Avatar
 
Join Date: Jul 2009
Location: Adelaide
Posts: 107
Default

Cheers mate will give it a go tnite.
diatribal08 is offline   Reply With Quote Multi-Quote with this Post
Old 24-05-2010, 02:37 AM   #6
Mechan1k
Moderator
Donating Member1
 
Mechan1k's Avatar
 
Join Date: Feb 2005
Location: Kenthurst
Posts: 40,403
Valued Contributor: For members whose non technical contributions are worthy of recognition. - Issue reason: Brings a wealth of knowledge to the forums and is frequently giving helpful advice. Technical Contributor: For members who share their technical expertise. - Issue reason: Always willing to help out with technical information. 
Default

LPG model ... or petrol????
If LPG ... they have know issues with senders on the side of the tanks.
Mechan1k is offline   Reply With Quote Multi-Quote with this Post
Old 25-05-2020, 04:04 PM   #7
KRISL
Regular Member
 
KRISL's Avatar
 
Join Date: Jan 2010
Location: Motueka, New Zealand
Posts: 384
Default Re: Fuel gauge issues.

Fg2 gage says 2/3rds bug tank is full, car says empty but can only fit 20L in can it be reset?
__________________

Current 2009 FG GTP
Sold
2003 boss 260 xr8 daily driver
1991 eb1 xr8 once a year driver, factory cassette player
KRISL is offline   Reply With Quote Multi-Quote with this Post
Reply


Forum Jump


All times are GMT +11. The time now is 04:43 PM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Other than what is legally copyrighted by the respective owners, this site is copyright www.fordforums.com.au
Positive SSL