Has anyone used the sending unit sold by macs auto on a 58? They have one that says universal so I'm wondering if it would drop right in or do I have to make it fit. Or maybe there is one available somewhere else that works better
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Fuel sender unit
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Buy one from Rockauto.com. They have two listed. Both are identical to the original plus we get a 5% discount.
JohnJohn Pizzi - Squarebirds Administrator
Thunderbird Registry #36223
jopizz@squarebirds.org 856-779-9695
https://www.squarebirds.org/picture_gallery/TechnicalResourceLibrary/trl.htmComment
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I had the fuel sending unit replaced with the new fuel tank installation. Is there a way to calibrate the sending unit other than trial and error?
The old unit only read to 3/4 full with a full tank, but the tank still had gas when the gauge read close to E. The new sending unit reads F when full, but the tank is 3/4 empty at the 1/2 mark.
DeanComment
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Fuel sender unit
Dean, the information on adjusting the Fuel and Temperature gauge is in the Technical Resource Library (TRL). Here is the link to it. Check it out.
http://www.squarebirds.org/picture_g..._adjusting.htm
Ray Clark - Squarebirds Administrator
The Terminator..... VTCI #11178 ITC #6000 Yellow Mustang Registry (YMR) #12188
Contact me via Private Message for my email address, or Call (Cell) 210-875-1411
https://www.squarebirds.org/picture_gallery/TechnicalResourceLibrary/trl.htm
Faye's Ovarian Cancer Memorial Website.
https://faye.rayclark.info/index.htmlComment
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Dean:
I has some similar issues and finally figured out I had the wrong sending unit. Bought another one and things worked fine.
I did check the sending unit when it was out of the gas tank by hooking it up and moving the float from the full down to full up position to see how the gauge would respond. There is a slow response time so take your time if you decide to check it this way. I think it is an easier step than messing with the gas gauge itself.
I can't remember if the sending unit is oriented with a tab for position in the tank, but I think it is. As I recall, the float arm should be pointing towards the front of the car. If not it could be bottoming on the bottom of the tank and not reading the gas level. Just a thought.
Also the manual says to use 2 flashlight batteries (3V) and connect that to the fuel gauge. With the 3V supplied it should read "approximately full".
Nyles
NylesComment
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Thanks Ray and Nyles.
I recall the previous owner explaining he set the sending unit so the tank wouldn’t be empty before the needle pointed to E. So he had a problem with the tank going empty prior to the needle pointing to E. That’s why he adjusted the sender so he wouldn’t run out of fuel when the gauge read 1/4.
I suppose it is possible that when my gauge reads half, I might have about 7 gallons left, or so. That’s just an estimate. And the gauge runs to E normally.
DeanComment
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Dean:
I has some similar issues and finally figured out I had the wrong sending unit. Bought another one and things worked fine.
I did check the sending unit when it was out of the gas tank by hooking it up and moving the float from the full down to full up position to see how the gauge would respond. There is a slow response time so take your time if you decide to check it this way. I think it is an easier step than messing with the gas gauge itself.
I can't remember if the sending unit is oriented with a tab for position in the tank, but I think it is. As I recall, the float arm should be pointing towards the front of the car. If not it could be bottoming on the bottom of the tank and not reading the gas level. Just a thought.
Also the manual says to use 2 flashlight batteries (3V) and connect that to the fuel gauge. With the 3V supplied it should read "approximately full".
Nyles
NylesComment
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Sending unit should have a tab and when lined up the float would then point toward the filler neck.
Here's my old tank replacement article - looks like I forgot to mention that the float points toward the filler neck but should only go one way if the tab is aligned. Guess there could be a replacement sending unit without the tab that would make it confusing.
http://www.squarebirds.org/picture_g...eplacement.htmComment
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