Fuel Sending Unit

[77warlock]

Can anyone please tell me how to ohm out a fuel sending unit and tell if it is bad or good.Unit goes in 77 Warlock truck. and if anyone has a good working one for sale I might be interested in just buying it .

[71383bee]

Remove the sending unit wire and ground it with the car in run the gas gauge should peg full. If it doesn't then you have a wiring or gauge problem. If it pegs full like this, but doesn't give you a reading when you reattach it to the unit then the unit is either bad or incorrectly grounded.

[dkn1997]

if you remove the sender, ground the black wire on your meter and attach the red to the wire on the sending unit ( or the stud) set the meter to 2k on the ohms scale. then move the float and watch meter. I do not remember what the exact values should be, but you should see the numbers change.

if you determine that it is the sending unit, odds are that when you pull it out, you will find a nice hole in the brass float

[77warlock]

Dude you must be physic !! I already have it out and replaced the float but want to check to see if it checks out.Its to much work to pull in and out and too high ($100.00) from dodge dealer to just replace if it is alright.thanks for the info

[77warlock]

Dude you must be physic !! I already have it out and replaced the float but want to check to see if it checks out.Its to much work to pull in and out and too high ($100.00) from dodge dealer to just replace if it is alright.thanks for the info

[6 packin]

easy
Just get your multi meter switch it to 200 ohms. It should read from 10 to 70 ohms. Just connect it to the stud and touch the ground to it.

[77warlock]

Thanks guys I will get out the meter first thing in the morning

[dkn1997]

I knew someone out there would know the exact readings