Why are my fuel trims like this? also having odd 02 readings?? NEED HELP STAT!

[/\G]

alright lets cut to the chase... my fuel trims are: HIGH(133%), MED(119%), LOW(114%) at the present time. I believe they are like this because my 02 sensor is reading an extremely lean condition. i recently replaced my 02 sensor. When at idle the 02v are anyware from .00v-.90v (seems normal), but when driving any past 1psi of boost the 02 readings drop to .00v???? My car is very slow, and gets horrible gas mileage. Whats wrong and how do i fix this??

Also theres a huge difference(good) in performance as the fuel trims get closer to 100%. There is a huge difference(bad) in performance when the fuel trims get farther away from 100%.

-Randy

 

[RavenX]

For 1g's your supposed to have your fuel trims closer to 100% while 2g's have to have them around 0%. Anyways it looks like your running way to rich. So if you have a AFC or something of that nature to tune with then lean it out a bit.

Edit: Noticed you didn't have a afc or anything of that sort. You should also check for leak on the intake system to make sure no air is leaking in or out.

 

[/\G]

i must be confused wouldnt it be running lean if my 02v's are at 0.00v when im at WOT? also i thought that when your fuel trims are higher then 100% (for 1gs) that means you have a lean condition and its adding that much more fuel to compensate.

 

[/\G]

i did a boost leak test today and the only leak i could find was a very small one at the throttle body. I am planning on setting up an appointment to get my car checked out at Extreme Motorsports.. I'm thinking if they can make a 1g produce 1200hp and go 167mph in the 1/4mile, then i think they should be able to help me out. but if anyone knows whats wrong please let me know before i spend the big bucks.

 

[Evil1gDsm]

I'm having the same damn problem...At WOT my Fuel trim 02's are at 167.1% which is max!! I've done everything to changing out ECU's, different MAS's..really everything..I'm lost...So i'm back to possibly a bad o2 sensor / wires...Good luck man...Hope someone can help you out...dan

 

[92awdgsx]

cracks in the manifold and turbine housing will throw off you o2 readings, witch will intern throw off you feul trims. just a thought. i had a similar problem. hey, at least i didn't reply with BOOST LEAK.