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*gmachinz* · 09-24-2016, 11:21 PM

Is the VHX setup for a 0-90 ohm reading? That's what these OEM senders are. Over the years the float arm contact with the resistor board wears away the surface or literally fails to make contact sometimes. I've had to "gently bend" the arm so that it reads on my gauge. To test your sender out of the tank, take a multi-meter set to OHMs, then ground the black lead to the metal sender body and take the red lead and connect it to the sender stud. Now slowly move the float arm up and down-you should see your display read from 0 to about 93/94 which is normal. While doing it check to make sure the tang keeps contact with the resistance strip.

09-24-2016, 11:21 PM	#4
gmachinz Account Suspended Join Date: Jun 2011 Location: Des Moines, IA. Posts: 4,143	Re: Sending Unit Help 1974 C10 Is the VHX setup for a 0-90 ohm reading? That's what these OEM senders are. Over the years the float arm contact with the resistor board wears away the surface or literally fails to make contact sometimes. I've had to "gently bend" the arm so that it reads on my gauge. To test your sender out of the tank, take a multi-meter set to OHMs, then ground the black lead to the metal sender body and take the red lead and connect it to the sender stud. Now slowly move the float arm up and down-you should see your display read from 0 to about 93/94 which is normal. While doing it check to make sure the tang keeps contact with the resistance strip.