Troble shooting Fuel Tank gauge, sender 

Thank you! I was trying to check the wiring and needle in a different way and it didn't work. After seeing your video I found out it was the sender rod. You saved me several hours changing the wiring and the gas needle!!

Thank you for the info! I was able to fix my sending unit in no time!

Thank you! Exactly the issue I’m having on my gauge in my Stingray 185. Thanks for explaining how to easily troubleshoot this. 👍🏼🇨🇦

Great video! thanks for the very helpful information.

Great vid. Simple to understand. Thanks!!

Wayne , thank you. Having the same problem with my sending unit, going to put it on the list for spring. Happy New Year.

Thank you! Very helpful video.

Very informative. Thank you.

great video and information!

Awesome video and explanation of all details. I subscribed. thanks

Excellent..

Hello Wayne, I have watched your video and it has been really helpful for me to understand. I did have one question, on the video at minute 2:30 you use the black cable that you connect. What is the black cable from? Not sure what it is connected too! Thanks!!

excellent thanks a lot

Good video, the only thing I would have done in addition would be to clean around the sender before it was removed. Murphy is my copilot and somehow the dirt would be in my tank.

Hi Wayne, Thanks for this really helpful video! I didn't know that you could test the gauge by connecting the two wires that go to the sending unit together. Great! We have 3 diesel tanks and 3 sending units, only 1 of which still works. I think all of it is original from when the boat was made 40 years ago. The sending units look exactly like the one you had in your diagram. Do you have any idea of where I might be able to order a new one?

I put a new sender in my gas tank it worked fine but now when I turn the key or the key moves around the gauge returns to empty or bounces back and forth to full and if I wiggle the key at the ignition it does the same moves from empty to full and Vice a versa

i recomend the little ohmeter at harbor freight less than 10.00 easy to learn how to tbl shoot wiring errors i use mine 2 -3 times a week very useful

I've been trying to fix the gas gauge in an old Chevy truck since 2005.

You buy a used 1973 jet boat, the tanks are rusted, you need new tanks and sending units. How do you test the gauge so you can get the correct sending unit with the correct ohms range? Some are reversed? 10 ohms Empty or 10 ohms Full? Some range from 0 ohms -90 ohms. You can see how I am a little stuck. Maybe get a Resistance Tool/Box to send different resistances to the gauge.

Is there any sending units with just 1 wire? Mine looks like it just has 1 wire but then that makes me wonder if it needs a ground or if it is grounded?

my sending unit has two wires going to it red & black, per video instructions i connected the + & - terminals of the sending unit together & the fuel gage reacted. But by removing the resistance (sending unit) from the circuit and connecting the positive and negative terminals together, shouldn’t that cause a short?

Thanks, i will check, what is the problem

Where'd you go?

hardly any one is using a read switch sender they are 99% tbl free nothing moves but the float its magnetic very accurate been using on in my army truck tank about 10 yrs

order you a reed switch on line measure the depth minus 1/2 inch of your tankthe mounting is standard 5 hole they read 33ohms full 240 ohms empty cost about $50 .00 money well spent easy to install very accurate

What if its comstantly pegged on full??

Cty

I’m sorry, good video, but why does everyone start diagnosing at the sender? Think simple, work from key to gauge to sender, then complete system is checked. Turn key on, check for power and ground at gauge, if good then ground out gauge on back, gauge should peg. If no power/ground, fix first. If gauge doesn’t peg gauge is bad. NOW go to sender, ground out with key on, if it pegs sender bad, if it doesn’t wiring to gauge is bad. There, simple complete system diagnosed. Again sorry, but there are more videos on RU-vid that they all start at the sender. And just for info, there are rare times the gauge will peg but still be bad. Retired 40 year marine tech.

L

come on dude you don't need a 10-minute intro