FWIW:
If you continue to have measurement issues, the voltage regulator on the back of the dash cluster can also affect the gas gauge.
At 04:14 PM 3/24/2020, Gary Wittman wrote:
I wanted to give another update on my new fuel sending unit. Even though the gage read close to what I wanted with the tank full and 5 gallons in the tank, I found it was not very linear. It would drop down fast initially and then slow down after 3/8 tank or so. I was not comfortable with that, so I decided to take my old sending unit apart to see what was going on in there.
I found the metal strip that slides across the wire winding was worn through and the end was just barely hanging on. I removed the hanging piece and bent the metal strip so it would contact in a different area. I then made sure it had pressure against the wire windings. I tested the ohm readout and it functioned very smooth and transitioned through the ohm range very uniform. I had tested the repaired float and filter by soaking in gasoline for a week. They both passed but I did not like the looks of the filter. I figured out how to remove the filters from both the old and new sending units and swapped them. I thought about swapping the floats but decided to try the old float first, at least for a while.
With the gasoline drained from the tank I installed the old sending unit and was getting a reading over E on the fuel gage. I adjusted the float position by bending the float arm until I could get a reading of slightly below E. I then tightened the sending unit lock ring and put in 5 gallons of gas. The gage read just below 1/4. I then added another 2 gallons and got a gage reading of just over 1/4. When I filled it up the gage read slightly over F, which is what I am used to seeing. After driving about 10 miles the gage was on F. I think it should continue to work well.
I will continue to observe the gage reading when the tank is full to determine if the float is soaking up fuel. I can always swap the float from the new sending unit if needed.
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Chris Scheers, Applied Synergy, Inc.
Voice: 817-237-3360 Internet: chris@...
Fax: 817-237-3074
