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8mpg, running rich, here are my scantool results
Posted: Sat Mar 11, 2006 10:15 pm
by LaureltheQueen
MAF signal :
@ idle - 1.2v
@wot, redline 4.98
TPS @WOT .96
Inj. pulse 19.2 @ WOT
O2 sensor range .1 to 1.1 (this is after replacing the O2 sensor with a brand new one 2 weeks ago
dunno what normal ranges for any of this stuff are, but maybe(surely) you guys know more than me. Gonna clean the MAF sensor with this new MAF sensor cleaner that I bought this afternoon and see if it changes any readings.
TIA!!!
Posted: Sat Mar 11, 2006 10:30 pm
by Subtle
Laurel
I still have the Bosche O2 sensor and narrow band A/F gauge.
The sensor was working fine when I took it off.

Posted: Sat Mar 11, 2006 11:31 pm
by LaureltheQueen
wouldn't do shit.

Posted: Sun Mar 12, 2006 7:58 pm
by LaureltheQueen
nobody? I'm more curious than anything to find out how far out of wack my data is.
I forgot to mention, 16g and ic
Posted: Sun Mar 12, 2006 9:35 pm
by Splinter
If I can get my scantool working properly Ill post my data later today
Posted: Sun Mar 12, 2006 11:42 pm
by douglas vincent
The answer for all problems.....
Coolent temp sensor!
How does the wagon run otherwise?
Posted: Mon Mar 13, 2006 1:26 am
by LaureltheQueen
runs like a champ, a little slow in low rpm range, but decent. Not much better or worse when it's cold or warm. I really don't want to drain my cooling system...
Posted: Mon Mar 13, 2006 2:42 am
by J-MoNeY
Explode it?
Posted: Mon Mar 13, 2006 3:26 am
by evolutionmovement
You don't need to drain he cooling system - it's on top in the gooseneck water jacket.
Posted: Mon Mar 13, 2006 3:54 am
by magicmike
evolutionmovement wrote:You don't need to drain he cooling system - it's on top in the gooseneck water jacket.
Thats still below the coolant res. I've been waiting to change mine out. I got a new one from the dealer along with a new thermostat.
Posted: Mon Mar 13, 2006 4:03 am
by evolutionmovement
But that's not all that much and stray cats will probably clean up whatever spills.
Posted: Mon Mar 13, 2006 4:27 am
by 98legacywgn225mt
It might be different for subarus, but on the firebird I work on the tps reads 5 volts at wot
Posted: Mon Mar 13, 2006 6:02 am
by Richard
I did my coolant temp sensor and had barely any coolant spill. Easily managable with a terry rag or two. Compressed air helps to get it off the block too.
Posted: Mon Mar 13, 2006 7:02 am
by 555BCTurbo
Laurel, I have a spare known good Coolant Temp Sensor...I will mail it to you!
I think Doug has a good point,
It's a way easy replacement, and will maybe spill like 4 ounces of coolant, nothing to be alarmed about.
I forgot your address so PM it to me again

Posted: Mon Mar 13, 2006 1:57 pm
by legacy92ej22t
Yeah, I barely spilled any coolant either, when I replaced mine.
Re: 8mpg, running rich, here are my scantool results
Posted: Mon Mar 13, 2006 6:23 pm
by vrg3
LaureltheQueen wrote:MAF signal :
@ idle - 1.2v
That's about right.
@wot, redline 4.98
You have a 16G and a catless downpipe, right? That's about right too.
TPS @WOT .96
That's about right. Maybe a little low. But it should be fine.
Inj. pulse 19.2 @ WOT
If that's just as you slam the pedal down, that's about right too.
O2 sensor range .1 to 1.1
That seems right if it's at idle or cruise. Under what circumstances did you take this measurement?
What do the fuel trims do?
What makes you say you're running rich? Is it just the poor fuel economy?
I think you might not be running rich. When the oxygen sensor reading is bouncing around, you probably aren't.
This 8 mpg -- is it in the city? On the freeway? Mixed?
Posted: Mon Mar 13, 2006 7:41 pm
by 555BCTurbo
Did you swap a 454 into the wagon?
That might explain the fabulous mileage...
Posted: Mon Mar 13, 2006 8:54 pm
by LaureltheQueen
o2 sensor range is at idle and then at sustained full throttle.
The exhaust smells like unburnt fuel, and my tailpipe is a mess. That's what leads me to believe the car is running rich. I'll have my friend go out with me again tonight with the scantool and figure out the fuel trims stuff.
the 8mpg is mainly city, but I was getting at least 16-19 about 8 months ago with only city driving.
nick, pm sent
Posted: Mon Mar 13, 2006 8:57 pm
by vrg3
Wait, so at idle it sits at about 0.1 volts and then it goes to about 1.1 at WOT?
Posted: Mon Mar 13, 2006 9:06 pm
by LaureltheQueen
I don't know, I was driving. I think it goes as high as 1.1 at WOT
Posted: Tue Mar 14, 2006 10:51 pm
by Bheinen74
i didnt spill ANY coolant replacing my coolant temp sensor.
Trick: loosen cap on tank resevoir, squeeze the top radiator tube while the cap is loose, then tighten cap back, stop squeezing top radiator tube. This will create a vacuum, and you can swap sensors in about 2 minutes flat. for the sensor, you need a deep 19mm socket, which is same as 3/4 deep socket.
hope that helps
Posted: Tue Mar 14, 2006 11:00 pm
by LaureltheQueen
thanks! I'll do that as soon as nick gets it in the mail.

Posted: Wed Mar 15, 2006 5:58 am
by 555BCTurbo
oooh...so now I am pressured to get it in the mail...
I will asap

Posted: Wed Mar 15, 2006 8:30 pm
by LaureltheQueen
lol, don't be too pressured, I won't have much time to get it installed until after I move
Posted: Thu Mar 16, 2006 12:57 am
by NICO
i just want to add something about this running rich problem everyone is haveing on ej22t motors.
i owned a ej22t motor for a very very long time 14 years 850,000kms half a million miles. i just put dohc heads on my block which everyone might now, the fuel consumption with bigger heads whent down some much i forget when was the last time i whent to the gas station.
with the sohc heads i was useing twice the fuel it was like a pig, with the new heads on the consumption whent down alot.
i have no "specs" for everyone to compare, but i can tell very much bye dialy driving.
its normal for this stock ej22t run so rich