Morris Minor ShopMorris Down Under Forum Forum Index Classic Car Trader
Log in Register FAQ Memberlist Search Morris Down Under Forum Forum Index

Fuel Gauge Reading backwards

 
Post new topic   Reply to topic    Morris Down Under Forum Forum Index » Electrics, Instrumentation & Security
View previous topic :: View next topic  
Author Message
libbor
Banned for bullying.


Joined: 01 Feb 2009
Posts: 1341
Location: Ghoulbon

PostPosted: Fri Feb 19, 2010 7:59 pm    Post subject: Fuel Gauge Reading backwards Reply with quote

As you can probably tell, "Cecil" is finally on the road.

I am having one electrical hitch -

I have a black face kilometre speedo fitted with its matching black fuel gauge. I have what I thought was the correct sender unit also.

the way I see it, the gold fuel gauge has the bulky aluminium sender and the black face has the more modern looking sender unit.

As soon as i turn the ignition on, the gauge goes to full which is wrong because the tank is actually empty. If I disconnect the sender the gauge stays on empty.

It seems that the sender is reading backwards. Has anyone experienced this before. Also has anyone got the black face stuff fitted.

I cant believe it, i've wired the whole car and a fuel gauge stuffs me around

All help would be greatly appreciated.

Thanks

Libbor,

P.s Ill post up some pictures when its done


Back to top
View user's profile Send private message Send e-mail
grant69
moderator


Joined: 27 Jan 2004
Posts: 2796
Location: Cairns Nth Qld

PostPosted: Fri Feb 19, 2010 8:31 pm    Post subject: Reply with quote

Sounds like you have a old sender with new gauge.
The black speedo has a capacitance style gauge, requiring a capacitance sender, if your sender is resistive ie has a wire coil, the easiest fix is to swap the old gold gauge out a change the black face which is what I have done.


Back to top
View user's profile Send private message Visit poster's website
Kustombruce
valued contributor


Joined: 09 Sep 2003
Posts: 603
Location: Canberra, where they put creative spirit in the water

PostPosted: Fri Feb 19, 2010 9:47 pm    Post subject: Reply with quote

Libbor
I have a few spare speedo heads under the house Black and gold, I will bring them over in the morning, we can have a play

Bruce


Back to top
View user's profile Send private message Send e-mail Visit poster's website
libbor
Banned for bullying.


Joined: 01 Feb 2009
Posts: 1341
Location: Ghoulbon

PostPosted: Fri Feb 19, 2010 10:11 pm    Post subject: Reply with quote

Thanks mate


Back to top
View user's profile Send private message Send e-mail
frosty
moderator


Joined: 23 Dec 2003
Posts: 3829
Location: 4559 near a big pineapple, Qld

PostPosted: Sat Feb 20, 2010 12:18 pm    Post subject: Reply with quote

The corolla intank sender won't work with the english guage.
I had a in tank sender unit made up from a VDO unit that had the correct 'black magic' gizmo's that Grant is talking about, attached to the Toyota unit for my EFI setup. Works a treat - although I am using another English (not Morry) fuel guage.
If you have an Instrument Repair place in Canberra then I would go and have a chat with them and taking the guage that you really want to use with you so they can hook it up and test what sender unit is required.

I will venture into the 'black hole' and try and find it and take a pic for you.


Back to top
View user's profile Send private message Visit poster's website
grant69
moderator


Joined: 27 Jan 2004
Posts: 2796
Location: Cairns Nth Qld

PostPosted: Sat Feb 20, 2010 12:54 pm    Post subject: Reply with quote

if you have a corolla sender, VDO make a replacement round gauge to suit the corolla


Back to top
View user's profile Send private message Visit poster's website
libbor
Banned for bullying.


Joined: 01 Feb 2009
Posts: 1341
Location: Ghoulbon

PostPosted: Sat Feb 20, 2010 1:49 pm    Post subject: Reply with quote

hi, I dont have the corolla sender any more. I do want to use the black face fuel gauge, ( the one that has the voltage regulator attached to the back of the speedo.

Libbor


Back to top
View user's profile Send private message Send e-mail
grant69
moderator


Joined: 27 Jan 2004
Posts: 2796
Location: Cairns Nth Qld

PostPosted: Sat Feb 20, 2010 1:55 pm    Post subject: Reply with quote

plug in a gold face gauge and if that works ok, remove it from the the speedo drill out the rivets and remove the face (you can do this without damaging the needle) do the same for the black face and attach it with some super glue or araldite, or peen the rivets back over


Back to top
View user's profile Send private message Visit poster's website
libbor
Banned for bullying.


Joined: 01 Feb 2009
Posts: 1341
Location: Ghoulbon

PostPosted: Sat Feb 20, 2010 2:30 pm    Post subject: Reply with quote

does that need a voltage regulator or does it work off straight 12 volts. I know the black face gauge only requires 10 volts.


Back to top
View user's profile Send private message Send e-mail
grant69
moderator


Joined: 27 Jan 2004
Posts: 2796
Location: Cairns Nth Qld

PostPosted: Sat Feb 20, 2010 3:00 pm    Post subject: Reply with quote

The voltage regulator does not need to be used it is more a filter, to keep stray noise from affecting the capacitance


Back to top
View user's profile Send private message Visit poster's website
libbor
Banned for bullying.


Joined: 01 Feb 2009
Posts: 1341
Location: Ghoulbon

PostPosted: Mon Feb 22, 2010 12:34 pm    Post subject: Reply with quote

Hi

All sorted

What I did was to bend the arm the opposite way. And then adjusted it to read full when full

thanks for all your help

Darren


Back to top
View user's profile Send private message Send e-mail
grumpy
Happy to be Grumpy


Joined: 19 May 2006
Posts: 79

PostPosted: Mon Feb 22, 2010 3:06 pm    Post subject: Reply with quote

G'day all

I am having trouble trying to work out what the voltage regulater has got to do with the fuel gauge. Are you sure that your not talking about the voltage stablizer?

regards Grumpy.


Back to top
View user's profile Send private message
grant69
moderator


Joined: 27 Jan 2004
Posts: 2796
Location: Cairns Nth Qld

PostPosted: Mon Feb 22, 2010 3:10 pm    Post subject: Reply with quote

Yes it is a voltage "stabilizer" or filter not a regulator


Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    Morris Down Under Forum Forum Index » Electrics, Instrumentation & Security All times are GMT + 10 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001- 2004 phpBB Group
Theme created by phpBBStyles.com | Themes Database