Fuel Trims off the chart...
Thread Starter
Burning Brakes
Joined: Oct 2005
Posts: 791
Likes: 2
From: Stafford Virginia
Fuel Trims off the chart...
I finally put in my McLeod clutch and prepped the car for the track for the first time this year, I made it about 3/4 of the way to MIR with everrything looking great while logging with my HPTuners when, I came up to my favorite spot where I could really get into it for a short stretch. After I did so, I checked the log and my WOT was at 13.7 or so instead of the 12.9-13.1 I shoot for. I noticed after I let out of it that my Left bank went lean and started adding 50% on my Longterm fuel trims and 24% on my short term fuel trims. I checked for broken, burnt or unplugged leads on my front left bank O2 sensor but found nothing...
I've replaced both front O2 sensors twice already, I guess I'll replace them again and hope the 3rd times a charm... Anybody have any ideas why it eats O2 sensors? The car has almost 60,000 on it and my spec's are in my signature. Any help would be appreciated!
What brand O2 sensors are the best and who on the forum sells them?
Thanks!
I've replaced both front O2 sensors twice already, I guess I'll replace them again and hope the 3rd times a charm... Anybody have any ideas why it eats O2 sensors? The car has almost 60,000 on it and my spec's are in my signature. Any help would be appreciated!
What brand O2 sensors are the best and who on the forum sells them?
Thanks!
Last edited by Isaiah48; Apr 12, 2010 at 12:25 PM.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
There are a ton of things that can cause LTFT's to whack out. I would check that first. Pull the connectors off the sensors and check each GROUND to chassis ground, heater supply voltage and grounds and wires for damage while your down there. Look for exhaust leaks.
Also check the intake tract between the MAF and Throttle Body for air leaks.
Let us know how you maks out.
BC
Also check the intake tract between the MAF and Throttle Body for air leaks.
Let us know how you maks out.
BC
Thread Starter
Burning Brakes
Joined: Oct 2005
Posts: 791
Likes: 2
From: Stafford Virginia
There are a ton of things that can cause LTFT's to whack out. I would check that first. Pull the connectors off the sensors and check each GROUND to chassis ground, heater supply voltage and grounds and wires for damage while your down there. Look for exhaust leaks.
Also check the intake tract between the MAF and Throttle Body for air leaks.
Let us know how you maks out.
BC
Also check the intake tract between the MAF and Throttle Body for air leaks.
Let us know how you maks out.
BC
The last time I replaced them was after having issues with a modded FAST 90 to clear the firewall.
I think your probably right on! Thanks.
So what is the best brand O2 sensor and who sells them here?
