After going to two different mechanics and not finding an answer, I come to you all…
Car is a 1993 Buick Roadmaster with a 350 V8. Two weeks ago, my car started a thing where I turn the ignition in my car, the fuel gauge goes ALL the way past Full (not normal) and cranks, but won’t start. I had just filled my tank up and was between full and 3/4 when this started.
First time it happened, had the car towed to the mechanic. Suddenly, once at the mechanic, the gauge starts working again and the car starts!
This happened two more times that week, same symptoms. The next week, no problems at all.
On Sunday, I filled up the car. On Tuesday, the car was back up to its old tricks. Took it to another mechanic - tested the fuel pump and said it was fine.
So…what is happening here? The car continues to do this, and it’s only doing it in the morning after the car has been sitting overnight. The only common things I can fine is that when the problems started this week and two weeks prior, I had just filled up the tank to full. I’m thinking that something is loose, like the wiring harness or fuel float inside the tank, or perhaps the sending unit. My searching on the web has turned up nothing.
The fuel gauge thing is weird. Even if it stopped working, why wouldn’t the car crank but not start - there’s plenty of fuel in the tank. I’m completely lost and frustrated at this point. Any pointers or direction?