My fuel gauge now only shows 3/4 tank when I fill it all the way up. I have done a search on this issue and it seems that this is a somewhat frequent problem but none of the post show a solution. Does anyone know how to resolve this problem? I have already tried to manually move the needle while the engine is on but it just returns to the previous position. Any help would be appreciated.

 

i fixed my problem by puting valvoline fuel system cleaner in my tank. Before I did that, I put a full tank ofhigh octane gas in my car. I tried everything but that fixed my problem though.

 

I have had that problem for the last 1.5 years. It woudl only show 3/4 full but when it gets around the 1/4 tank mark, it then becomes accurate.

I stopped using shell gasoline and started to use another brand and no problems ever since. Weird...but I have never seen my tank sit at full after a fill up but now I do.

 

yeah, i used shell gas also and that gave me that problem. now i use chevron, and everything is cool.mpg is good too.

 

Thanks for the replies guys. I've been using Racetrack premium gas for over a year now without problems until this last time. For the fuel injector cleaner, is there a particular brand I should use?

 

Ok what I meant to ask was is the fuel system cleaner the same thing as a fuel injector cleaner?

 

Disregard my last question...researched and determined that the fuel system cleaner is a more comprehensive cleaner than the fuel injector cleaner.

 

sorry i don't have any answers towards your question...

but my fuel needle does almost the opposite, it goes way past F and hasn't moved, just stays nearly straight up. this happened after i swapped out gauge clusters for SE gauges on a new cluster i bought cuz my old one was all messed up. anyone know how to fix this?? it's a goodthing i usually only watch the mileage instead of the needle, but i'd still like the needle to work. sorry to but in to your thread, but they're both about needles not being right, right?

 

Fuel injector only cleans the fuel injectors. fuel system cleans thw whole fuel system. that what valvoline says. i used valvoline fuel system cleaner.