fuel gauge issue
Thread Starter
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Senior User
Joined: Sep 2016
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fuel gauge issue
Recently I replaced the in tank fuel pumps and sender units in both of my trucks fuel tanks with Airtex branded ones ( i now know i should have gone motorcraft) .
My dilemma is this, all works well except that the fuel gauges now read in reverse (show empty when full and full when empty).
Would the simple remedy for this issue be to just swap the two wires around which go to the sender unit at some point?
My dilemma is this, all works well except that the fuel gauges now read in reverse (show empty when full and full when empty).
Would the simple remedy for this issue be to just swap the two wires around which go to the sender unit at some point?
Fleet Owner
Joined: Aug 2005
Posts: 23,666
Likes: 301
From: Easton,Ks
No way to wire one wire backwards as only one wire runs to the gauge.
Sounds like he has installed a fuel sender for an Econoline van.
The 1989 Econoline van fuel gauge will read above "F" at 10 ohms from the sender and below "E" at 73 ohms.
The 1989 Econoline van uses the Bimetal strip type fuel gauge.
The 1989 F-series fuel gauge will read about "F" at 145 ohms and about "E" at 22 ohms.
The 1989 F-series uses the Magnetic type fuel gauge.
As you can see they work opposite of each other. We have ran into this on this site before but it has been a few years.
Sounds like he has installed a fuel sender for an Econoline van.
The 1989 Econoline van fuel gauge will read above "F" at 10 ohms from the sender and below "E" at 73 ohms.
The 1989 Econoline van uses the Bimetal strip type fuel gauge.
The 1989 F-series fuel gauge will read about "F" at 145 ohms and about "E" at 22 ohms.
The 1989 F-series uses the Magnetic type fuel gauge.
As you can see they work opposite of each other. We have ran into this on this site before but it has been a few years.
Thread Starter
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Senior User
Joined: Sep 2016
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My bad, its an '89 f150 with the 5.0 V8 and the taco.
But sounds like subford is on the money. Ill investigate that but if thats the case Ill be leaving it how it is for now.
Thanks for the help guys.
But sounds like subford is on the money. Ill investigate that but if thats the case Ill be leaving it how it is for now.
Thanks for the help guys.
Hotshot
Joined: Jun 2015
Posts: 12,791
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I wouldn't be able to to leave it like that. It would drive me nuts.
If someone ordered the wrong parts for your application then I would swap them out asap.
If someone ordered the wrong parts for your application then I would swap them out asap.
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Thread Starter
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Senior User
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Its not the best but dropping the fuel tanks out is a bit of a pita. I contacted the place where I bought them and they have given me a full refund.
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Hotshot
Joined: Jun 2015
Posts: 12,791
Likes: 2,426
You've already done the hardest part which is remove it the first time. I would have anti-seized the bolts when reassembling so it should be much easier now. I replaced both tanks in my gravel driveway using a floor jack. Not terrible.
5th Wheeling
Joined: Aug 2017
Posts: 39
Likes: 9
From: Dallas
Any progress with this? I too am looking at replace the sending unit--or rather the "fuels pump assembly"--truth is I can't make heads or tails of that contraption. I have the tank off, and I can see the bottom half of it--how is it anchored to the bottom of the tank?? There are no screws ar anything else visible from the outside bottom of the tank. Is it just glued on at the factory?? Thanks for any information.
Fleet Owner
Joined: Aug 2005
Posts: 23,666
Likes: 301
From: Easton,Ks
Not sure what you drive but there is no fuel pump assembly hooked or glued to the bottom of the tank.
It just sets in the hole and may touch the bottom of the tank. There is a locking ring on top of the tank to hold it in position.
It just sets in the hole and may touch the bottom of the tank. There is a locking ring on top of the tank to hold it in position.
5th Wheeling
Joined: Aug 2017
Posts: 39
Likes: 9
From: Dallas
Thanks for the replies--I figured it out. There is indeed a mounting bracket attached to the inside bottom of the tank. It the assembly releases from it via two tabs.
I posted this photo and the resolution at this thread:
https://www.ford-trucks.com/forums/1...from-tank.html
I posted this photo and the resolution at this thread:
https://www.ford-trucks.com/forums/1...from-tank.html
Fleet Owner
Joined: Aug 2005
Posts: 23,666
Likes: 301
From: Easton,Ks
Thanks for the replies--I figured it out. There is indeed a mounting bracket attached to the inside bottom of the tank. It the assembly releases from it via two tabs.
I posted this photo and the resolution at this thread:
https://www.ford-trucks.com/forums/1...from-tank.html
I posted this photo and the resolution at this thread:
https://www.ford-trucks.com/forums/1...from-tank.html
Your post was about a 2006 F250 V10.
