Gas float/sending unit in my 1964 Thunderbird

Tiny
CALBYTHEPIER
  • MEMBER
  • 1964 FORD THUNDERBIRD
  • 150,000 MILES
I just put in a new gas float/sending unit in my 1964 Thunderbird. The gas gauge needle is now pegged at the very top when I turn the car on.
Is it possible that I reversed the sending unit electrical wires when I spliced them back together near the gas tank?
Thanks for your help!
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Thursday, September 26th, 2013 AT 12:47 PM

7 Replies

Tiny
HMAC300
  • EXPERT
If it reads full then the wire may be touching the frame. Check for a blinking light at sender otherwise your sender is screwed up or gauge. Check for a bare wire hitting the frame or along it someplace.
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Thursday, September 26th, 2013 AT 1:32 PM
Tiny
CALBYTHEPIER
  • MEMBER
Thanks for the advice, Much appreciated!
I presume that a blinking test light at the sender is a normal/good condition.
I'll be checking for a broken wire.
If necessary I have an extra gas gauge in the garage somewhere.
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Thursday, September 26th, 2013 AT 9:19 PM
Tiny
HMAC300
  • EXPERT
Yes a blinking or low voltage light is normal. However it may not be the gague as thinking about this as it's been years for me there is a voltage reducer that may be bad as well but normally they don't it's usually a wire shorted someplace.
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Friday, September 27th, 2013 AT 7:48 AM
Tiny
CJ MEDEVAC
  • EXPERT
BEFORE YOU GO A-SNATCHIN' STUFF OUT

GROUND THE "EXTRA SENDER".I GO ALL THE WAY BACK TO THE BATTERY NEG POST WITH LONG JUMPER WIRES TO INSURE A GREAT GROUND IS ACHIEVED. IN THE CASE OF THESE PICS, I WAS NOT HAVING A PROBLEM, I CONNECTED TO MY GROUND WIRE AT THE TANK, NOT THE BATTERY, THESE PICS WERE MADE SO I COULD USE THEM ON 2CAR, AND TO AID IN TEACHING MY OTHER JEEP BUDDIES

TAKE THE SENDER WIRE OFF OF THE "GAUGE". THEN "JUMPER" THE "EXTRA SENDING UNIT'S" SENDER (STUD/POST) TO THE GAUGE

THE SENDER IS NOTHING MORE THE GROUND WITH VARIABLE RESISTANCE

"GROUNDING" THE GAUGE'S TEMPORARY JUMPER WIRE WILL MAKE THE GAUGE PEG OUT (JUST LIKE A SKINNED SENDER WIRE AGAINST THE BODY OR FRAME WILL DO

. INSTEAD OF GROUNDING IT, HOOK THE SENDER "JUMPER" TO THE SENDING UNIT (AS I SAID 2 PARAGRAPHS AGO)

MOVING THE FLOAT SHOULD VARY THE NEEDLE. EMPTY// DOWN.1/2 WAY UP// 1/2 FULL. ALL THE WAY UP// FULL

THIS MAY HELP YOU IN KNOWING WHAT END OF THE VEHICLE TO TACKLE 1ST

HAVE SOME PICS FROM MY RECENT TANK MODIFICATIONS TO MY '46 WILLYS ("WILLY"). HAD TO RELOCATE THE FILL SPOUT/ DO SOME BODY WORK TO ACCOMMODATE INSTALLATION OF THE SHOVEL AND AX (AS MY BODY CAME WITH NO PROVISIONS)

HE'S HAS BEEN 100% REVAMPED, HAS FIBERGLASS TUB/FENDERS/HOOD HE'S BEEN BACK ON THE ROAD EVER SINCE '93.I'M STILL TINKERING WITH HIM.I RAN EVERY SINGLE WIRE (ALONG WITH GROUNDS. FIBERGLASS) AND WENT THRU/ REPLACED EVERYTHING ALL BY MYSELF, JUST OUT OF THE ARMY AND 27 YEARS OLD

SEND PICS OF YOURS!

KEEP US POSTED ON PROGRESS AND IF YOU NEED MORE INFO

THE MEDIC

WELL OVER 7000 ANSWERS PROVIDED
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Sunday, October 6th, 2013 AT 9:55 PM
Tiny
CJ MEDEVAC
  • EXPERT
THE REST
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Sunday, October 6th, 2013 AT 9:59 PM
Tiny
CJ MEDEVAC
  • EXPERT
2CAR JUST DON'T LIKE LOTS OF PICS AT ONCE

HERE'S THE "HALF FULL". OR."HALF EMPTY" PIC THAT DIDN'T MAKE IT

THE MEDIC
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Sunday, October 6th, 2013 AT 10:03 PM
Tiny
CALBYTHEPIER
  • MEMBER
Thank you very much for your input! I will try your suggestion this weekend and see if I can isolate that problem.
I'll let you know how it goes. Nice Jeep.
Have a great day!
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Wednesday, October 9th, 2013 AT 1:08 PM

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