Fuel level gauge and sender.
#1
Burning Brakes
Thread Starter
Fuel level gauge and sender.
Hi,
My fuel gauge wasn’t accurate at all, I filled the tank and the needle indicates only ¾ full, only starts to come down when about 250km done and then the needle reaches and passes the red zone well before the reserve light comes on.
I thought the solution was easy, new fuel level sender, new gasket and new cap!
Well, now I have a working reserve light as I did before but I have also an inoperative fuel gauge with the needle stuck in the red zone no matter the quantity of fuel in the deposit!
Electrical connection problem? Is the new fuel level sender already “dead”? And if the level sender is not working or as a bad connection why is the reserve light working, isn’t’ it a part of the level sender?
TIA for your answers and help.
Regards
My fuel gauge wasn’t accurate at all, I filled the tank and the needle indicates only ¾ full, only starts to come down when about 250km done and then the needle reaches and passes the red zone well before the reserve light comes on.
I thought the solution was easy, new fuel level sender, new gasket and new cap!
Well, now I have a working reserve light as I did before but I have also an inoperative fuel gauge with the needle stuck in the red zone no matter the quantity of fuel in the deposit!
Electrical connection problem? Is the new fuel level sender already “dead”? And if the level sender is not working or as a bad connection why is the reserve light working, isn’t’ it a part of the level sender?
TIA for your answers and help.
Regards
#3
Drifting
t's a long time since I changed that sender, but I seem to recall that the reserve light warning is a separate wire (of the 3 on the plug) to the wire which carries the resistance reading which drives the needle.
I would start with a very thorough clean of the plug and connector at the sender end.
There may be a problem with connectors at the pod end, or the tracks/nuts on the pod circuit board itself.
I would start with a very thorough clean of the plug and connector at the sender end.
There may be a problem with connectors at the pod end, or the tracks/nuts on the pod circuit board itself.
#4
Burning Brakes
Thread Starter
Hi,
At first I thought it could be a bad connection at the dash, some contacts that need cleaning, but, although I'm sure they need cleaning, the only thing done was removing the old sender and replace it with a new one with a new gasket and also a new plastic cap.
The dash wasn't touched.
And before that the needle was working, not accurate, but working…
Regards
At first I thought it could be a bad connection at the dash, some contacts that need cleaning, but, although I'm sure they need cleaning, the only thing done was removing the old sender and replace it with a new one with a new gasket and also a new plastic cap.
The dash wasn't touched.
And before that the needle was working, not accurate, but working…
Regards
#6
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Did you remove the retaining spring in the new sender before install.
It is there to protect the float during shipping.
Not easy to see and often an issue.
It is there to protect the float during shipping.
Not easy to see and often an issue.
__________________
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission? George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission? George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
#7
Burning Brakes
Thread Starter
It was my mechanic who mounted the sender and probably he didn't remove it.
I also didn't know about that retaining spring.
I will check on Monday, but I'm almost sure it's that because it was working before the replacement and the connections look clean.
Thanks for the tip
Regards
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#8
Team Owner
Hi Roger can you please expand on the retaining spring in the fuel sender
How does it work where is it connected .
Doesnt the fact that the float sliding inside the sender mean its free for full travel?
How does it work where is it connected .
Doesnt the fact that the float sliding inside the sender mean its free for full travel?
#9
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The sender comes from the factory with a thin metal spring/clip near the bottom which holds the float in place to save damage during transit. Once ready to install you remove the clip allowing the float to now move and do its job.
This has happened a few times and we now add our own label saying remove before install.
Roger
PS Sean has a picture
This has happened a few times and we now add our own label saying remove before install.
Roger
PS Sean has a picture
#10
That wire thing at the bottom? Pull it out. I can't tell you how many people have installed a sender and then brought it to me telling me the gas gauge won't work. They kinda get embarrassed when I pull the sender, pull the safety wire and re-install.
#11
Team Owner
Thanks for the picture Sean,
it musta been out of the last one i installed,
but i did test it before i installed it
plugged the connector on and tilted the sender and the float went from empty to full and verified on the gauge
it musta been out of the last one i installed,
but i did test it before i installed it
plugged the connector on and tilted the sender and the float went from empty to full and verified on the gauge
#14
Racer
Not that I had the same problem, but mine was stuck after filling up. Do all the years use a similar float system? I turned the car on and the needle read empty and said ****. I tried accelerating, braking and turning side to side. No change. I turned the car on and off a few times. The next time I turned it on all good. I love how these cars really are alive. They can get sick and better all by themselves. I know on old Supra's the float get heavy and read low. A little bending of the wire the float is on and the problem is solved. From looking at the picture these ones go up and down on the large shaft? I guess the float could shift and stick in place. I just don't understand why shacking the tank didn't fix this problem.