1978 Fuel Sender Question
Thread Starter
Burning Brakes
Joined: Feb 2008
Posts: 769
Likes: 343
From: Mooresville NC
1978 Fuel Sender Question
Context of question: I've removed my sender (and replaced) both with the tank in, and out. I currently have the tank completely drained but installed due to an EFI / fuel pump upgrade. The tank (unfortunately) has been sitting idle and drained for a couple of years. I've checked and validated my gauge is working fine on a 0-90 ohm scale. I've checked the cars wiring, that is fine. The sender is "sending" a resistance in the 50K ohm to 140K ohm level. I removed the sender (again), and at the output of the potentiometer, the reading is perfect. About 1-90 ohms. The problem is the "ribbon wire" that goes from the output of the potentiometer to the top of the filler cap. Now for the questions:
Can this wire be replaced / repaired?
Has anyone ever done this?
It's going to tick me off if I have to buy another sender. This one is new albeit its been sitting in air for a couple years in my tank. It worked when I installed it. I even validated that with pictures a couple of years ago.
Please advise,
KT
Can this wire be replaced / repaired?
Has anyone ever done this?
It's going to tick me off if I have to buy another sender. This one is new albeit its been sitting in air for a couple years in my tank. It worked when I installed it. I even validated that with pictures a couple of years ago.
Please advise,
KT
Thread Starter
Burning Brakes
Joined: Feb 2008
Posts: 769
Likes: 343
From: Mooresville NC
Thread Starter
Burning Brakes
Joined: Feb 2008
Posts: 769
Likes: 343
From: Mooresville NC
Well, the problem is fixed. The problem was the ribbon wire - but specifically the connection at the top of the assembly where it connects to the terminal. There was a bunch of corrosion material built up between the wire and the terminal. So, I removed the ribbon wire, cleaned the ends, cleaned the lower terminal where it connects to the potentiometer, and the upper terminal where it connects to the bulkhead. I checked the ribbon wire for resistance, and it checked out at about .6 ohms. So it was good. Once the terminal was clean the sender worked like a champ again. The output once again reads 0-90 ohms.
Once I finished re-installing everything - I checked again. The output measured about an ohm or less, and the gauge immediately went to a hair below empty. Moving on to the next thing...
Once I finished re-installing everything - I checked again. The output measured about an ohm or less, and the gauge immediately went to a hair below empty. Moving on to the next thing...
