How can I tell the ohm range of universal fuel sender?
With the multimeter set to the Ω setting put the red probe on the post that is the gauge lead and put the black probe on the ground post or on the body of the fuel sender. Record your readings with the fuel sender in the empty position and in the full position. Those two numbers will tell you the ohm range is of your sender.
Why is my universal fuel sender not working?
If you cannot make your gauge read anything but full then depending on your ohm range you may have one of the following problems: If you have a 0-30, 0-90 or 10-180 Ohm sender then the sender may not have a proper ground or there is a break in the sender lead wire.
Which is the most common universal fuel sender?
Autometer – 240-33 Ohms is the most common however other ohm ranges are made Classic Instruments – 240-33 Ohms (excluding vehicle specific gauge kits which use factory ohm range) Dakota Digital – Programmable to work with most Ohm range senders
Which is classic instruments store / fuel sending units?
Fuel Sending Units If Gauge is: Ohms Empty Ohms Full Use Classic Sender: Ford (pre-1987); AMC 73 10 Sender SN39 Toyota-Nissan 1985 and later 90 0 Sender SN38 – mount movement Upside-Down Stewart-Warner 240 33 Sender SN33 or SN35 Auto-Meter 240 33 Sender SN33 or SN35
With the multimeter set to the Ω setting put the red probe on the post that is the gauge lead and put the black probe on the ground post or on the body of the fuel sender. Record your readings with the fuel sender in the empty position and in the full position. Those two numbers will tell you the ohm range is of your sender.
What should the ohms reading on a sending unit be?
The sending unit should give you a reading from 0 – 90 ohms with 0 empty and 90 a full tank of fuel. If the sending unit is not putting out an ohms reading, pull the ground wire number 6 off the sending unit and test it for a good ground.
What is resistance range of fuel tank sending unit?
The fuel tank sending units used on all Ford products up through 1986 have a resistance range of approximately 8-12 ohms full and 70-73 ohms empty. (I tested my factory 25-gallon in-frame auxiliary tank’s sending unit, however, and got readings of 20Ω full and 85Ω empty.)
If you cannot make your gauge read anything but full then depending on your ohm range you may have one of the following problems: If you have a 0-30, 0-90 or 10-180 Ohm sender then the sender may not have a proper ground or there is a break in the sender lead wire.