frosty
Forum Member
Fly. Have you put a can of uec (upper engine cleaner) through it ? That stuff is magic i must say....
High fuel consumption issues
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mr turbo
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Bugger 
Regards
Mr Turbo
Regards
Mr Turbo
PigSti
Guest
Yes I did. Went better for 2-3 tanks then went back to usual
You will need this for starters..
https://www.chevron.ca/commercial/techron.asp
Tweaksta
Senior Member
For the record I just did a trip up to the Barringtons and got 500km to a tank which is about 9L/100km. The torque from the turbo helps so I don't need to wring it's neck too much. Pretty good figures for a 13 year old with 187,000km on the clock. The dipstick never drops either.
NachaLuva
Product Developer
I just got 9.9 with half of that towing a heavy trailer...pretty pleased with that :biggrin:
Sorry for the lack of updates, been a busy couple weeks.
O2 sensor was replaced today along with a few other things. Mechanics didn't see anything else that seemed obviously wrong (plugs, filter, catalytic converter were all changed within the last 10k km anyway) so I'm hoping it will solve the issues! I'll be traveling a lot during the holidays so I should be able to tell pretty quick.
One question: should I reset the ECU after such change or I'll let it "get used to it" itself?
O2 sensor was replaced today along with a few other things. Mechanics didn't see anything else that seemed obviously wrong (plugs, filter, catalytic converter were all changed within the last 10k km anyway) so I'm hoping it will solve the issues! I'll be traveling a lot during the holidays so I should be able to tell pretty quick.
One question: should I reset the ECU after such change or I'll let it "get used to it" itself?
Ratbag
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Hope it is the answer for you, Fly.
I don't know about the ECU. Cold logic would suggest that the ECU is monitoring this sensor about several thousand times per second, so it should adjust itself pretty rapidly. However, that does greatly depend on the programming of the firmware and data storage methodology in the ECU.
Perhaps someone who knows the answer one way or t'other will chime in and answer this?
Anyway, I hope that you and yours have a happy and safe Christmas and New Year
.
I don't know about the ECU. Cold logic would suggest that the ECU is monitoring this sensor about several thousand times per second, so it should adjust itself pretty rapidly. However, that does greatly depend on the programming of the firmware and data storage methodology in the ECU.
Perhaps someone who knows the answer one way or t'other will chime in and answer this?
Anyway, I hope that you and yours have a happy and safe Christmas and New Year
.
Blue Fox
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I skimmed through and did see this mentioned, but when my fuel milage starts to drop, it's because of a dirty MAF sensor. Not sure of the setup on your car, but on mine, the MAF "bulb" was completely caked with crud. Not to mention, I was getting boost cuts because the MAF was improperly reading the intake, causing the car to run lean. I also noticed a fuel economy drop as well. Thought I had something majorly wrong, but a tip from a local Subaru Master Tech of 17 years had me replace it and it's been perfect (tried cleaning it, but that didn't fix it).
Not sure if this helps, but it's worth a shot if you have an MAF and not a MAP sensor.
Not sure if this helps, but it's worth a shot if you have an MAF and not a MAP sensor.
Ratbag
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Gidday BF
The MAF sensor change didn't happen until the MY06 Forester, AFAIK. An '02 should have a MAP sensor, but I am not sure.
Fly, I think the way to tell is if the sensor is on the inlet manifold proper, it's a MAP sensor. If the inflow sensor is on the tube from the air filter to the inlet manifold, it's a MAF sensor.
The MAF sensor change didn't happen until the MY06 Forester, AFAIK. An '02 should have a MAP sensor, but I am not sure.
Fly, I think the way to tell is if the sensor is on the inlet manifold proper, it's a MAP sensor. If the inflow sensor is on the tube from the air filter to the inlet manifold, it's a MAF sensor.