PurpleBeeper
Well-Known Member
70 Road Runner - My gas gage hasn't worked in many years, so when I worked on my tank I put in one of those $25 repops so I could go to 3/8" line. When the tank is full, the gage reads 1/2. When the gage reads "empty" I have about 4 gal. of fuel left. I "figured" it was the cheap sending unit, so I bought a used OEM sender from a '68 Coronet.
I tested the '68 sender by grounding it to the body & putting a jumper wire from it to the sending unit "L" connector of the car. Turned the key to "on" (with sender in "full" position) and the gage reads 1/2 full, just like the cheap repop that's in the tank now.
Can a bad fuel gage cause this? Is it even possible?
I "thought" the gage reading was completely controlled by the sender and the gage is either "good" or "bad". What the heck is going on?
I tested the '68 sender by grounding it to the body & putting a jumper wire from it to the sending unit "L" connector of the car. Turned the key to "on" (with sender in "full" position) and the gage reads 1/2 full, just like the cheap repop that's in the tank now.
Can a bad fuel gage cause this? Is it even possible?
I "thought" the gage reading was completely controlled by the sender and the gage is either "good" or "bad". What the heck is going on?