Sometimes my gas gauge works but most of the time it does not. How would I find the problem. How should I proceed. I know it may be a bad ground but but how would I find it.

 

You need one of these buddy:
https://www.fcpeuro.com/products/jag...-xjr-dbc012042

Quick fix just make sure the tank is near empty before you remove it from the back of your tank (accessed thru trunk)
This will take 5 minutes to replace just remember where to relocated each connector.

 

Thanks, I will have to get one.

 

Did exactly as you suggested and all went perfectly. Done in 5 minutes as you said. So simple that I thought for sure I left something out, but nope. Thank you