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Senior Member
Fuel Level Sender not working right
Hi!
I have the hot rod gas tank, so maybe I should be asking in those forums (didn't see much on a search). I understand what the level sender is supposed to do, but mine doesn't have great contact between the wiper and the track. It's intermittent at best and hasn't read consistent resistance since day 1.
Do I just have a bad one? Is there a different kind of replacement that is better-liked? Is there something that's not gas-soluble that I can put on it to increase contact?
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Senior Member
Its probably bad, but you can bench test it and see if it works smoothly when you run it through its travel. Its a looks like a very common 87-93 Mustang sending unit, I picked up a Dorman one and has work perfectly for me. Not sure if the hot rod uses the same stock Mustang gas tank as the roadster, but that is my tank.
MKIV #9122 Ordered kit 5/24/17 received kit 8/11/17 MK4 Base kit +,First Start 4/7/18, First Go-Cart 4/22/18, In gelcoat, licensed and driving 8/11/18. Coyote gen2, T-56, 2015 IRS 3.31, 17" Halibrand replicas w/Nitto NT555 G2, Withby Motorcars power brake kit W/Wilwood pedals, 04 Cobra front brakes, 15 Mustang rear brakes with mods, power steering. Paint Jeff Miller Da Bat, Lexus Spectra Blue Mica W/Toyota Silver Sky Metallic strips. Build thread:
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Senior Member
Originally Posted by
Paul2STL
Its probably bad, but you can bench test it and see if it works smoothly when you run it through its travel. Its a looks like a very common 87-93 Mustang sending unit, I picked up a Dorman one and has work perfectly for me. Not sure if the hot rod uses the same stock Mustang gas tank as the roadster, but that is my tank.
Yup, ran it through the range on my desk (pictured) and it's....skippy. Sometimes overlimit, and sometimes in the range, but never smooth. It seems to be a contact issue, but I can't seem to fix it. I believe it's the same as the roadster, so I'll give another a try. Thanks!
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Should read 16-158 Ohms empty to full if you didn't already know that.
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Senior Member
Hm. The Subie ECU wants 0-90. I've found a lot of the same physical layout with 16-158 and a lot of 0-90 with a different form factor. Any thoughts on what the part # of the FFR one with the old 818s is? Mine was indeed 0-90 ohm.
A 198 ohm in parallel would give me my 90 and 14 when full, which wouldn't be the end of the world (15% off, linearly)
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Sorry, I assumed when you said Mustang that it would be the 16-158. What reading do you get at the low and full float levels?
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It appears identical to the sender from my original 818 tank. Mine reads pretty consistently 90-94 Ohms full and 3-9 ohms empty, but like yours is rather erratic in the mid range. Maybe only full and empty really matter?
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