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Old 12-12-2000, 03:05 PM   #1
Mr.Sniggs
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Member#: 3223
Join Date: Dec 2000
Location: vancouver, bc, canada
Post Excessive fuel consumption

I own a '92 Legacy Turbo Wagon. I have only had it for a month. I love driving the car but the fuel milage I'm getting is horrible. During mixed use driving I am getting about 13 MPG or about 200 miles to a 15.9 gallon tank. I have had it into the shop and hooked up to the Dynometer, had the ECU reset, I also asked about the Oxygen Sensor and was told the engine light will come on when it needs to be changed. I have tried higher octane fuel (92 and 94 octance), changed the spark plugs, air filter but to no avail. I am no stranger to gas guzzlers as I owned an Ford Explorer before the Legacy. Does anybody have any suggestions on something I might be overlooking?

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Old 12-13-2000, 06:46 AM   #2
SSLegacyGT
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Member#: 2865
Join Date: Nov 2000
Chapter/Region: NWIC
Location: CdA, ID
Vehicle:
2006 Legacy 2.5i
Wagon, 5MT, Blue

Exclamation

Check your tire pressure? You probably did, I'm just thinking about how mine is affected, I have a slow leak in my left rear tire, and it screws up my gas mileage big time if it gets too low.

[This message has been edited by SSLegacyGT (edited December 13, 2000).]
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Old 12-13-2000, 09:03 AM   #3
Mr.Sniggs
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Thanks, but I have tried that too.

I sometimes wonder if my fuel injection is sending too much fuel because when I recently changed spark plugs, one of the plug wires had a very noticable raw gasoline smell.

: )
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Old 12-13-2000, 01:49 PM   #4
Jason
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Member#: 105
Join Date: Jul 1999
Location: Fremont, CA 94538
Vehicle:
2000 Legacy GT Ltd
WHT

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spark plug wire? or maybe change fuel filter?
do a engine & tranny oil change?

trail and error.......
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Old 12-13-2000, 02:38 PM   #5
Mr.Sniggs
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Thanks.
I haven't changed the fuel filter or spark plug wires, but I think those are next. Any recommendations on which brand to use? I have replaced the spark plugs (NGK V-groove) and air filter, didn't notice much of a difference hopefully a new fuel filter and plug wires will help.

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Old 12-13-2000, 05:10 PM   #6
gavin
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Location: Portland, OR USA
Vehicle:
2005 GT LTD Wagon
Garnet Red

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I would try a couple of things, and in this order:

1) Get a can of BG44k - this is injector cleaner and really good stuff. It's spendy, but worth it. I use it 2-3 times a year to keep the injectors in good shape.

2) Change your fuel/air filters.

3) Reset\retrain your ECU - Here's how you do that:

a) With the engine cold, either disconnecting the neg battery cable, or pulling the EFI fuse for around 30 minutes. This will reset the ECU to the factory settings.

b) Reconnect the power and start the car without stepping on the accelerator - it may be hard to start. Without touching the accelerator, let the car warm up to normal operating temperature.

c) Turn off the engine and let it cool down, then repeat the warm-up routine in step b.

d) Drive carefully, and keep a light foot for the next couple hundred miles.

If mileage is still bad,
4) Change your spark-plug wires. I would highly recommend Magnecor's - expensive, but again, worth it.

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Old 12-14-2000, 10:48 AM   #7
Mr.Sniggs
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Thanks, I'll give that a try and get back to you with the result.

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