Fuel sending Unit OHMs reading
Thread Starter
Instructor
Joined: Feb 2011
Posts: 234
Likes: 15
Fuel sending Unit OHMs reading
I have a question. I have about quarter tank of gas and used an ohms meter to read what the fuel sending unit was reporting and the ohms meter was steady. I went to the back of the car and shook it from left to right hard. I then went back and put the ohms meter on the fuel sending unit and the numbers on the meter was bouncing up and down. Is this normal or does the fuel sending unit need to be replaced?
I also noticed the fuel gauge was also bouncing until the fuel in the tank was steady.
I also noticed the fuel gauge was also bouncing until the fuel in the tank was steady.
Team Owner
Joined: Sep 2006
Posts: 31,237
Likes: 4,331
From: Westminster Maryland
Hi r,
I believe IF the float in the tank moves at all, the signal sent to the gauge changes.
But, there must be some sort delay/buffer in the gauge because IT is very slow to respond , and also moves slowly so it's not 'dancing' around as the car goes up and down hills, and hits bumps in the road.
Stick your hand in the tank, move the float up and down and watch what the gauge does.
Regards,
Alan
I believe IF the float in the tank moves at all, the signal sent to the gauge changes.
But, there must be some sort delay/buffer in the gauge because IT is very slow to respond , and also moves slowly so it's not 'dancing' around as the car goes up and down hills, and hits bumps in the road.
Stick your hand in the tank, move the float up and down and watch what the gauge does.
Regards,
Alan
Melting Slicks
Joined: Jun 2004
Posts: 2,077
Likes: 0
From: westmoreland N.H.
Hi r,
I believe IF the float in the tank moves at all, the signal sent to the gauge changes.
But, there must be some sort delay/buffer in the gauge because IT is very slow to respond , and also moves slowly so it's not 'dancing' around as the car goes up and down hills, and hits bumps in the road.
Stick your hand in the tank, move the float up and down and watch what the gauge does.
Regards,
Alan
I believe IF the float in the tank moves at all, the signal sent to the gauge changes.
But, there must be some sort delay/buffer in the gauge because IT is very slow to respond , and also moves slowly so it's not 'dancing' around as the car goes up and down hills, and hits bumps in the road.
Stick your hand in the tank, move the float up and down and watch what the gauge does.
Regards,
Alan
yup, what he said...
Race Director
Joined: May 2006
Posts: 16,528
Likes: 53
From: Dayton, Ohio
with above.Rodney post #41 in this thread shows the buffer that keeps the needle from being too bouncy.
http://forums.corvetteforum.com/c3-t...e-bounces.html
