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Guest Message by DevFuse
 

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Crazy fuel sender?


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6 replies to this topic

#1 1-3-2-4

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Posted 10 October 2011 - 09:02 AM

I've been thinking about this and it has me wondering now myself.. So not that I intentionality let it get this low but I got my gas low enough that it was resting on the peg and I had no signs of stumbling or anything like that.. Now when I had my 95 Legacy when I started to get that low and make left hand turns it would start to starve for fuel.. So now this morning I was driving to work and I was a bit above empty and next thing I now I'm under and I'm resting on the peg again..

So I put gas in after work.. $15 worth was about 3.9 Gal.. So that brings it up from the peg to 1/4 and I'm thinking that can't be right?

And while driving home I noticed it went down a little bit but then came back up.. I was thinking about pulling the assembly and testing the fuel sender.. From what I hear a full tank should be about 1 MegaOhm and I forget what the lower end should be.

#2 Fairtax4me

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Posted 10 October 2011 - 08:52 PM

My 95 wagon is the same way. The needle moves up and down all over the place. I've watched it move from 1/8th tank to up over 1/4.
Last week I set the needle on the peg then drove to work and back two more times. Only took 13 gallons to fill it. I have noticed though that the needle on the wagon comes down form full much sooner than my sedan ever did. Going by the gauge, (which is pointless) I typically only get 40 miles out of that first "quarter".
My sedan does at least 60 miles of the same type of driving to move that first "quarter".

I have some BG 44K that I'm going to pour in the wagon and maybe it will help the fuel sender. Don't know.

#3 1-3-2-4

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Posted 10 October 2011 - 09:24 PM

Never got to pull it today to check but yeah my 95 impreza was really bad anything at 1/2 and going up a hill would read empty lol.

Next month I should know more driving down to VA then NC

#4 RedimprezaOB

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Posted 10 October 2011 - 09:53 PM

I probably shouldn't say amything because I own a 2005. But, I was at my sending units last year at this time. In this newer car the closer to 0 ohms the closer to full the reading and 90 to 95 Ohms was empty. ...rrrr the other way round. Point being a Megaohm seems really high. 50 ohms put me at a perfect half tank.

#5 1-3-2-4

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Posted 10 October 2011 - 09:56 PM

I have a look at the manual again to be sure I may not pull it at all this week since I don't want the inside to smell of fuel with the girlfriend coming up.

#6 987687

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Posted 11 October 2011 - 06:56 PM

Just keep track of your trip meter if you don't trust your gas gauge.
My 96 had a random gauge sometimes, BUT, the low fuel light is a totally different circuit. And that always came on when there was just over 2 gallons left, regardless what the gauge said. So that's nice, at least.

#7 1-3-2-4

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Posted 02 August 2012 - 06:30 PM

Ok I need to find one.. If you check on car parts it never says which sender it is.. and being as it's not that big I don't want to drive out and see they don't have it.. (happened when locating a transmission)

Since I put a full tank in and drive about the same way each week I figured around 260-280 it would start to show the low fuel light.

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