https://acurazine.com/forums/showthr...uck+fuel+gauge

Link to "Bad Fuel Gauge" ^^

I see one of the causes can be gunk in the gas tank.
My 2001 CLS 160,000 i have always tried to use stations that i thought would likely have clean gas. Also have changed the gas filter at 80K and 130K. Other night i am at a Chevron and it starts burping on the last gallon. Also was not feeding gas fast the whole time. I'm told slowness can be a sign that the station is not keeping their filters clean.

Anywho now the farking fuel gauge is stuck on Full.
Sending unit is mentioned as a possible cause in above TL link. I could not find a CL link for stuck gauge, assuming it's the same. Also a bad connection on grounds is a possible cause. Either way it doesn't sound easy gettin into the tank.

Thoughts?

 

Could possibly be that the floater on the pump/sending unit is stuck. Actually very easily to get to, access port is under the rear seat

 

My access is in my trunk, not under the rear seat. It is behind the seat.

 

How did you change the filter? I thought the only thing we had was a sock filter at the fuel pump, which is obviously located in the fuel tank.

 

Here is some good pics and instructions on how to change the fuel filter.
https://acurazine.com/forums/showthr...ht=fuel+filter

As to my cars Full gauge, it went down on it's own.
Now i don't know if i need to replace the sending unit or the pump part of the sending unit or not.

 

Can i change just the floater or are part(s) prices and labor time such that one might as well do the whole sending unit at once?
I'd like to do it myself if there is a DIY.