Silver> Where did you last fill up? Sometimes some gas stations have high levels of ethanol in their feul. This can cause the guage to go a little whacky. This happned in my 95 when I bouth 94 octane + octane boost It happened for about a week until the tank was all cleared out and was filled up again. It used to flip to E then climb all the way back up to F just as i was driving along

I usually get 700 or just over that with my ssei. the 95 i'd get close to 600 with.

Interesting. :?
I always fill up at the same Chevron with 94 Octane.
The fill-up before the last one that I'm having the problem with was spiked with an Octane booster, but no problems at that time.

That'* incredible mileage you are getting but my bet is it'* mostly 401 cruising with low warm-up time ratio.
I usually get 450 km to a tank but right now I've gone 400 km and it shows 1/3 tank of fuel left and 220 kms left.
BTW, yesterday the guage went from full to 1/2. :?

Nope.. she doesn't touch any of the 400 series highway.. just mostly back roads.. I touch the 401 all the time going to and from work and no matter what time it is.. it'* rush hour.. and if it'* not rush hour.. its cops and accident hours ( and even if you're lucky to have a clear path.. the road is so beaten up you can't go too fast without the car bouncing and flying and worried that big clunk sound was just a pot hole and not your wheel falling off from all the jarring) . I don't remember her incident with the 95 Bonnie.. but I remember bout the horror story her and her uncle has told me bout Pioneer and Sunny'* gas bar..

I think she gets much better mileage cause she doesn't use boost.

OK.. I"m in trouble now.. Tamara'* mouth probably and as soon as I see her she'* going to me...

Ya...I remember when mine started acting up there was no booster in the current tank....it was left over, and as the tank gradually wasn't filled to the top after the last fill, the alcohol rises since it is lighter. Hence the whacky gas gauge. I hope that'* all it is for your sake though I find TEMPERATURE has a lot to do with my mileage. In the winter I get anywhere from 450=500. In the summer is when I get to the 700 range. Mind you, i've only hit boost about 2x now all the times murdock has when i'm not there dosn't count!
maybe wait till the next fill up....see if it continues?

haha. No ....i made the boost comment in the post i posted at the same time you did ...but if you want me to you....haha
The incident with my 95 was shortly after I bought it. I got it in March 2000 and it happened in April on my way to college one day. Different gas stations have a lot to do with it too...the 2 murdock mentioned have a LOT of water in them and are a poor quality..but water is heavier and I would think (not that i am an expert by any means ) that it would have other effects. Such as chugging/surging/missing. At least that'* what it does to mine

Put some fuel in today for the first time after the gauge started acting up. The gauge was reading empty with 470 kms on the DIC since the last fill up.
I put in 35 liters and the fuel gauge went to full. :? It'* a 70 liter tank.
Drove it around and put 25 km on today and the gauge has gone down to 3/4.
The new fuel sender is on its way and should be here Wed.

I cleaned out the trunk. The access is thru the little cover on the trunk floor just over the fuel tank.
I'm going to have them replace the fuel pump strainer while their at it.....and not to forget a new O-ring seal.

My 2003 SSEi is getting 500 to 600km per tank, 95% all highway. I thought this was really good for the supercharged engine until I started reading these posts? My 97 SLE used to consistently get 600km+ per tank. Mine is bone stock except for the K&N air filter and it only has 13000km.

No, I would say that'* normal, especially in the colder weather. I find my car gets higher kms in the warmer weather. Mine is an SSEi also...

Too bad Silver :( My problem was a lot easier to fix :?

Everything came together today..........must have something to do with it being PDad'* birthday

The dealer replaced the fuel tank sending unit today and all is back to normal. I even had him replace the intake screen. I watched him do the whole procedure and it was dead simple.
The only tricky part was removing the entire fuel pump assembly that attaches to it because the assembly is a large bucket and is full of fuel, so you have to suck the fuel out of the bucket before pulling it out of the opening inside the trunk or else it would spill inside the trunk.
The sending unit includes the float assembly as well. It looks like a common rheostat type. Also made sure he used a new rubber seal.

Well it was Birthday wish that your sending unit work properly

Did you get the case learn done today too?