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2003 Forester 2.5XS AT
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Discussion Starter #1
Hi, new here.
Purchased a 2003 Forester 2.5XS with 181k miles 11/24/2018, owned by an older couple and very well taken care of as far as I can tell.

When I first got it, it was at 1/4 tank, I drove until low fuel light came on and then filled up fully so I could gauge MPG myself by driving back to low fuel light.

Have driven about 200 miles since and noticed a weird problem with the fuel gauge, no matter how much fuel I put in, the needle won't move.

I read a few threads on here and around Google and some other posters indicated Techron Fuel System Cleaner (black bottle) will possibly cure the issue, so I went out and got a bottle.
Being as this is my first subaru,I figured maybe I need a tune up as well since I'm not familiar with the vehicle. I changed air filter, fuel filter, cabin filter, spark plugs, wires, oil.

Now, the needle reads 3/4 and does not change. I got another bottle of Techron, filled more gas, and driven about 100 additional miles and still no change.

Can someone point me in the correct direction as what to check next?
I also read about possibility of bad level sending unit? There's two? Can't seem to find a DIY, TSB, or write up anywhere though? Every thread I find just says "pull the floor out and check the resistance..." :| my Google skills were pretty good I assumed but I'm finding nothing but vague instructions.

Thanks! and I apologize in advance if some sort of writeup is laying around here somewhere but I've been spending hours in the freezing New England cold the past few days looking at everything inside and out trying to figure this out.
 

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Registered
2003 Forester 2.5XS AT
Joined
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12 Posts
Discussion Starter #3
Coming back to update that problem was solved.

Drove a few full tanks and applied the black Techron Fuel System Cleaner 3 times, needle works now. Oddly though, I have to give the dashboard above the cluster a light smack for the needle to go up after a fill up, but then it goes down fine as I run through the fuel.

Unfortunately now, another issue has popped up where the pump will click every other second when filling. Tilting it to the 8 o clock position and trickle pumping seems to stop it so I'm guessing it'll be fuel neck related ugh.
 
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