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Don 'Mo Lurch'
Don 'Mo Lurch', Classic Car Mechanic
Category: Classic Car
Satisfied Customers: 20523
Experience:  Heavy Line Mech-, Mobile Electronics. Sales, Installation & Repair for 30 years. R/S, etc.
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I have a 1965 chevy truck and my fuel gauge stays on fuel

Customer Question

hi my name is ray,
i have a 1965 chevy truck and my fuel gauge stays on fuel all the time,
hot wire going to sending unit only getting 6volts is that right.
Submitted: 2 months ago.
Category: Classic Car
Expert:  Don 'Mo Lurch' replied 2 months ago.

The Sending Unit provides a Ground / Resistance to the Guage
Measuring for Voltage would not help
These Sending Units are known issues & likely will need to remove the Sending Unit to check the Variable Resistor & be sure there is a good Ground - wire going to the Sending Unit Mounting Plate

Customer: replied 2 months ago.
i dont no how to do all of that.
Customer: replied 2 months ago.
how do i check ground
Customer: replied 2 months ago.
where are you 24.00 dollars worth
Expert:  Don 'Mo Lurch' replied 2 months ago.

i dont no how to do all of that
???

.

I'm sorry..........the Sending Unit is a "simple" one wire to the Fuel Gauge Circuit.
It is not measured in "voltage", but Ground - that is producing a Resistance to the Fuel Gauge to tell it to move
There is NO Voltage to the Sending Unit (if it is stock)
IF this is NOT stock, please tell me
You need a Volt / Ohm Meter to test the Signal from the Sending Unit
The Sending Unit provides a Ground- signal & you would connect the Black Lead of the Ohm Meter to Ground - (frame)
Then you would use the RED Lead to test Ohms / Resistance at the Sending Unit
IF you are not able to do this, then you may want someone local check it
I have a 1965 3/4 ton that I installed a 396 into & had issues with the Sending Unit also
Be sure there is a good Ground going to the Sending Unit where it screws into the top of the tank

Expert:  Don 'Mo Lurch' replied 2 months ago.

Ray.............I am here to help, not to confuse you
Please let me know what more info you need, as my '65 is here with me & I can test what ever you need to compare with yours
Thanks

Expert:  Don 'Mo Lurch' replied 2 months ago.

Did you need more information

Please respond or Rate my answers
thanks

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