Gas Gauge Sending Unit

My friend, who has a 72 Duster 340 4 speed car has bought at least 4 after market senders. It was all for nothing because they are "junk". We have checked the resistance outside of the tank before installation & all is good. Minutes after installation the readings are all over the map, 5 gallons of fuel reads nothing, 10 gallons of fuel reads 3/4 tank, drive ten miles, fuel level drops to empty. We are now searching for someone to rebuild the original & hopefully it will work correctly.
Hi DR,
I replied to your post earlier but for some reason it didn’t go through. Please check out John Wolf and Co, they rebuild/restore vintage gauges and fuel sending units. A few FABO guys have sent their fsu’s to him and were very happy with his work. Hope this helps your friend and others in need of his services. Take care...
318MG