Fuel gauge problem
Fuel gauge problem
Author
Discussion

niccy b

Original Poster:

122 posts

185 months

Saturday 30th April 2011
quotequote all
So I filled up this morning.... Done 70 miles an the gauge still reads full. Great sounding I know but this isn't right. Is stuck!!!! Any ideas ?????
Ps. C u tomo at goodwood smile

AMG Merc

11,955 posts

282 months

Saturday 30th April 2011
quotequote all
niccy b said:
So I filled up this morning.... Done 70 miles an the gauge still reads full. Great sounding I know but this isn't right. Is stuck!!!! Any ideas ?????
Ps. C u tomo at goodwood smile
Nic, does the gauge read zero when you switch off? If no then its the gauge (tap it gently!). If yes then probably the sender in the tank - drive over some bumps with half a tank and see if it frees up.

Either way, so long as your odometer is working you won't run out of fuel - will you wink

TuxMan

9,011 posts

267 months

Saturday 30th April 2011
quotequote all
niccy b said:
So I filled up this morning.... Done 70 miles an the gauge still reads full. Great sounding I know but this isn't right. Is stuck!!!! Any ideas ?????
Ps. C u tomo at goodwood smile
Mine is the same normaly starts to drop after 80 or so miles depending on how heavy my right foot is :-)

The devil

2,152 posts

212 months

Saturday 30th April 2011
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Me too

R0162

2,435 posts

193 months

Saturday 30th April 2011
quotequote all
it can read full for quite a while before it starts to drop, the arm on the fuel level sender stops inches short of the top of the tank, so the fuel level has to drop a few inches before the arm starts to drop.

snuffy

13,202 posts

313 months

Saturday 30th April 2011
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If I fill mine to the the top then the gauge will read full for about 100 miles. Then it drops like a fast dropping thing that drops quite fast.

key750

259 posts

205 months

Saturday 30th April 2011
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On mine I have a "bzzzzzzzzz" rattle from gauges rolleyesbanghead

Jim O.

486 posts

226 months

Saturday 30th April 2011
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If I remember correctly, the amount of travel of the float on the fuel level sender isn't long enough to reach from the top to the bottom of the tank. So, if you set the sender high, so the float drops right away after you fill up, it will read empty while you still have a lot of fuel in the tank. Or, you can slide the sender lower, so that the lowest position of the float is down at the bottom of the tank - that way, empty on the gauge is closer to an empty tank, but you'll have a dead spot on the gauge when the tank is full.

On our track cars, I usually just use a long wood stick that I dip down through the filler to check the fuel level... smile

Edited by Jim O. on Saturday 30th April 20:00

andygtt

8,345 posts

293 months

Saturday 30th April 2011
quotequote all
if the guage isnt seeing the sensor it read full all the time... this is one of the small issues I have with mine frown

Rob_W

1,070 posts

243 months

Saturday 30th April 2011
quotequote all
Jim O. said:
On our track cars, I usually just use a long wood stick that I dip down through the filler to check the fuel level... smile

Edited by Jim O. on Saturday 30th April 20:00
Do these guys help you measure fuel levels on your track cars?

http://redirectingat.com/?id=1044X509854&xs=1&...


R0162

2,435 posts

193 months

Saturday 30th April 2011
quotequote all
Jim O. said:
If I remember correctly, the amount of travel of the float on the fuel level sender isn't long enough to reach from the top to the bottom of the tank. So, if you set the sender high, so the float drops right away after you fill up, it will read empty while you still have a lot of fuel in the tank. Or, you can slide the sender lower, so that the lowest position of the float is down at the bottom of the tank - that way, empty on the gauge is closer to an empty tank, but you'll have a dead spot on the gauge when the tank is full.

On our track cars, I usually just use a long wood stick that I dip down through the filler to check the fuel level... smile

Edited by Jim O. on Saturday 30th April 20:00
i have just been through all this myself smile

it can be changed, bend down the stops to give more travel and then calibrate to the gauge by turning the calibration screw on the back, after playing with mine for a while i got it to read perfect on full and empty, but i kept empty as 4" above bottom of tank on purpose as a safety factor but because i had changed my gauges, the ohms read backwards because i still had the original fuel sender, so i took off the arm and turned it upside down hehe



R0162

2,435 posts

193 months

Saturday 30th April 2011
quotequote all
andygtt said:
if the guage isnt seeing the sensor it read full all the time... this is one of the small issues I have with mine frown
are yu still using the original gauges Andy?

R0162

2,435 posts

193 months

Saturday 30th April 2011
quotequote all
key750 said:
On mine I have a "bzzzzzzzzz" rattle from gauges rolleyesbanghead
there is a metal bracket on the back that holds them in place, it may have come loose, put your hand under and you should be able to feel the bracket and fixings, they can be tightened using your fingers.

niccy b

Original Poster:

122 posts

185 months

Saturday 30th April 2011
quotequote all
It reads empty when off and reads full when on, I've just finished the tank and it still reads full. Does this mean it's the sensor? Sorry I'm not that mechanical I put stickers on for a living!!

andygtt

8,345 posts

293 months

Saturday 30th April 2011
quotequote all
R0162 said:
andygtt said:
if the guage isnt seeing the sensor it read full all the time... this is one of the small issues I have with mine frown
are yu still using the original gauges Andy?
yes std guage and std sendor... reads full when ignition is on and empty when ignition is off regardless of level in the tank.


andygtt

8,345 posts

293 months

Saturday 30th April 2011
quotequote all
niccy b said:
It reads empty when off and reads full when on, I've just finished the tank and it still reads full. Does this mean it's the sensor? Sorry I'm not that mechanical I put stickers on for a living!!
when I find out whats wrong with mine I will let you know

niccy b

Original Poster:

122 posts

185 months

Sunday 1st May 2011
quotequote all
All sorted, drive to goodwood for a blat and noticed it was working again smile

Chapppers

4,483 posts

220 months

Thursday 12th April 2012
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Bump!

Got my car back on the road finally after the winter rebuild (I really should do a thread about that!)


Aaaanyway, my fuel gauge doesn't work. I think it's a sticky needle because it goes to full and then just stays at the max, then when I come back to the car some time later it will have returned to zero.

So my questions are... fuel sender? fuel gauge? needle? How do I remove it? Where do I get a new one if all else fails?

Thanks!

andygtt

8,345 posts

293 months

Thursday 12th April 2012
quotequote all
mine was an faulty connector between the fuel sensor and gauge.... faulty in that I hadn't plugged it in lol

R0162

2,435 posts

193 months

Thursday 12th April 2012
quotequote all
Chapppers said:
Bump!

Got my car back on the road finally after the winter rebuild (I really should do a thread about that!)


Aaaanyway, my fuel gauge doesn't work. I think it's a sticky needle because it goes to full and then just stays at the max, then when I come back to the car some time later it will have returned to zero.

So my questions are... fuel sender? fuel gauge? needle? How do I remove it? Where do I get a new one if all else fails?

Thanks!
Sounds to me like its not plugged in properly, if it grounds to the tank then it will shoot up to full.