Inoperative fuel gauge

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maria24017
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Joined: Wed Jun 06, 2012 7:55 pm

Inoperative fuel gauge

Post by maria24017 »

Since I am getting all the kinks straightened out with my suebaroo I thought I would ask about the gas gauge.

We have been able to use the trip meter when filling it up all the way (around 360 miles is getting toward a close call) but with my salary it hurts to fill it up all the way.
The gas gauge hasn't worked correctly since the car was given to me. 90% of the time it is on empty. On occasion when I KNOW it is almost empty it will say full or 3/4's.

Any solutions to this?

The rpm gauge also doesn't like to work :x
1990 Subaru Legacy L sedan 2.2L 4 cyl AWD automatic 122,500

The worst day of your life only lasted 24 hours
rallyak
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Re: Inoperative fuel gauge

Post by rallyak »

It sounds like the sensor in the tank, it an easy fix.
Charles

90' White/Gray Outback DD workhorse (670,xxx) miles
92' Onyx Metallic (430,xxx) Wife's DD
68' Barracuda formula S 340 4spd coupe (ongoing project)
66' Mustang 2+2 4spd wife's (ongoing project)
maria24017
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Re: Inoperative fuel gauge

Post by maria24017 »

Advance has one for $17. Will that be OK?
1990 Subaru Legacy L sedan 2.2L 4 cyl AWD automatic 122,500

The worst day of your life only lasted 24 hours
rallyak
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Posts: 896
Joined: Wed Oct 26, 2011 7:02 am
Location: Anchorage,Alaska

Re: Inoperative fuel gauge

Post by rallyak »

Not sure, but easy to pull out to compair. The sensor is on the left side(drivers side) of the tank. Their is an access panal in the trunk (sedan) or under carpet ( wagon) unbolt it and pull it out. Then you could take an ohm meter and confirm that it bad.
Charles

90' White/Gray Outback DD workhorse (670,xxx) miles
92' Onyx Metallic (430,xxx) Wife's DD
68' Barracuda formula S 340 4spd coupe (ongoing project)
66' Mustang 2+2 4spd wife's (ongoing project)
rallyak
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Posts: 896
Joined: Wed Oct 26, 2011 7:02 am
Location: Anchorage,Alaska

Re: Inoperative fuel gauge

Post by rallyak »

I took some pics of my spare for my cars.
Image
Image
Charles

90' White/Gray Outback DD workhorse (670,xxx) miles
92' Onyx Metallic (430,xxx) Wife's DD
68' Barracuda formula S 340 4spd coupe (ongoing project)
66' Mustang 2+2 4spd wife's (ongoing project)
maria24017
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Posts: 85
Joined: Wed Jun 06, 2012 7:55 pm

Re: Inoperative fuel gauge

Post by maria24017 »

Thanks for the info. I took mine out. I have a sedan and had to lay in the trunk with my legs hanging out, people driving by probably thought I was crazy. I intended just to drive over to advance and grab the part but they couldn't find it in the computer. Turns out it is a universal part
http://shop.advanceautoparts.com/webapp ... fragment-4

We did try cleaning the unit but it isn't working. We'll have to hook a voltage meter up to it tomorrow and see what I can find out.

Do you think the universal one would work?? They aren't exactly alike or anything. It says for use with fuel level gauges and 5" - 26" deep tanks
1990 Subaru Legacy L sedan 2.2L 4 cyl AWD automatic 122,500

The worst day of your life only lasted 24 hours
rallyak
Third Gear
Posts: 896
Joined: Wed Oct 26, 2011 7:02 am
Location: Anchorage,Alaska

Re: Inoperative fuel gauge

Post by rallyak »

I would stick with oem one either used or new. I believe you can make it work but not sure how accurate or the install.
Charles

90' White/Gray Outback DD workhorse (670,xxx) miles
92' Onyx Metallic (430,xxx) Wife's DD
68' Barracuda formula S 340 4spd coupe (ongoing project)
66' Mustang 2+2 4spd wife's (ongoing project)
Legacy777
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Re: Inoperative fuel gauge

Post by Legacy777 »

There are actually two level senders, one of the passenger side and one of the driver's side. Their combined resistance will give the total fuel level. I ended up having to replace both of my senders because they were causing erratic fuel levels.

These are unfortunatley only something you can get from the dealer.

Pages 44-48 of the 90 Legacy wiring diagrams has info on the wiring diagrams and resistances. You can use this info to test the current senders and verify that they are bad vs. something in the wiring.

http://www.main.experiencetherave.com/s ... agrams.zip
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

If you need to get a hold of me please email me rather then pm
maria24017
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Joined: Wed Jun 06, 2012 7:55 pm

Re: Inoperative fuel gauge

Post by maria24017 »

The gauge randomly started working a week and a half ago and hasn't stopped. If you put gas in the needle doesn't go up right away but does after you turn the car off then back on.

I will probably still clean the second sending until though, since the first was pretty dirty.
1990 Subaru Legacy L sedan 2.2L 4 cyl AWD automatic 122,500

The worst day of your life only lasted 24 hours
Legacy777
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Re: Inoperative fuel gauge

Post by Legacy777 »

It will probably stop working again....it's kind of normal for them to work and then not work.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

If you need to get a hold of me please email me rather then pm
91Beater
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Posts: 219
Joined: Thu Mar 08, 2012 12:37 pm
Location: pdx

Re: Inoperative fuel gauge

Post by 91Beater »

I have a FWD wagon with one sensor. Can I get a generic $17 sensor or do I have to spend a lot of $$ at the stelaer?
phxmotor
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Re: Inoperative fuel gauge

Post by phxmotor »

Isnt this what wrecking yards are for? A dealer part for this seems illogical.
91Beater
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Location: pdx

Re: Inoperative fuel gauge

Post by 91Beater »

phxmotor wrote:Isnt this what wrecking yards are for? A dealer part for this seems illogical.
Not for me.
Either new aftermarket or OEM for something like this.

Wrecking yards are great for something that you can check on the spot and immune from intermittent issues.
Headlight assembly, interior trims, body, etc.

Things that need replacement due to wear and tear failures aren't something to be bought at wrecking yard. If many of us are having problems here, many used parts with similar amounts of use are bound to be worn.

fuel sender, HVAC unit, A/C compressor are no-no.

A/C compressor... I bought used one from the forum. Internally faulty.
Bought second used one from eBay. Internally faulty.
Finally bought a new one. AC works great.

The refrigerant had to be charged and recovered each time. This was a waste of time and money.
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