Posted By: Guitar Jones
Fuel gauge erratic with 93 cluster & 74 sender - 06/30/22 11:37 AM
So I have swapped all 93 wiring harnesses and the dash from a RC into my 74 PW with an in cab fuel tank. The gauge initially read 3/4 tank when I turned the key on and didn't fluctuate at all. But when I drove it the gauge fluctuated about 1/4 tank consistently, the roads are really crappy here. It didn't do this before the swap and my 92 doesn't do it either. I made two 24 mile round trips with the truck, then on it's third trip the gauge was fluctuating down to a 1/4 tank so I figured I better fill it up to be safe. I put 27 gallons in what is supposedly a 24 gallon tank so I'm thinking it was about empty. I know the resistance values for the senders are the same.
So my question is, is there a mismatch here I'm not aware of between the gauge type and the sender and is there anything I can do to correct it or compensate for it?
So my question is, is there a mismatch here I'm not aware of between the gauge type and the sender and is there anything I can do to correct it or compensate for it?