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Classic/Antique Car Repair/Fuel tank sending unit

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Expert: - 11/26/2007


Question
I just purchased a 67 Ford Galaxie. The fuel gauge was not responsive so I did some digging... The tank sending unit has two wires(1)ground (1)gauge. When shorted together the gauge indicates full. I replaced the sending unit and associated gauge 5 volt DC regulator (which does have 5V at output). There is no change in the gauge movement. It raises to just above "E". That is all it does. I have filled the tank ran it for days and filled it again...no change. The sending unit has about 83 ohms across it at last test. What do I do now?

Answer
A few questions. Was the new Sender new or used? Was it new old stock? Did it come with a new float?. Do you still have the old sender? When you check the old sender with an ohm meter in both the full and empty positions what does it read? Does the reading transition smoothly as the float is moved?
Brad

Classic/Antique Car Repair

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Brad Sears

Expertise

All automotive including antique and collectible. However if the car has been modified I can only answer in general terms and maybe get you pointed in the right direction.

Experience

Automotive tech instructor. Syndicated auto columnist 1970's though the early 1990's. Syndicated auto radio talk show, Ask Brad About cars, CBS Radio 70's through 90's TV Show "Last Chance Garage" 1980's PBS-TV syndicated. Auto instructor for the following companies: Fram Autolyte Holly Carter AMF Ford Motor University Of Conn Blue Hills Technical School Sugar River Technical Center Grew up in a family garage in Needham Mass and turned wrenches from the age of 14.

Publications
Manchester Union Leader, Nashua Telegraph, Motor Service Magazine, Yankee Magazine, Popular Mechanics (Saturday Mechanic early 80's), Los Angeles Times, New York Times, and lots more.

Education/Credentials
More than I care to remember. Basically Franklin Technical Institute in Boston, Northeastern University, Fitchburg State Teachers College, Tufts University, and a lot of factory schools along the way.

Awards and Honors
Moto Award winner. And much more.

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