BLM 108 and O2 is low?
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Supreme Member
Joined: Aug 1999
Posts: 2,441
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From: sweden
Car: GTA -89
Engine: Blown 415"
Transmission: 4L80E
Axle/Gears: Strange 12-bolt
BLM 108 and O2 is low?
I ....
Scanned my car yesterday at Idle.
BLM 108 and oxygen sensor was switching between 0- 700 mV.
Isnt BLM 108 very rich and O2 0-700mV lean?
injectors are #22 and FP 50 psi, 2,4 mS.....
Any ideas?
Scanned my car yesterday at Idle.
BLM 108 and oxygen sensor was switching between 0- 700 mV.
Isnt BLM 108 very rich and O2 0-700mV lean?
injectors are #22 and FP 50 psi, 2,4 mS.....
Any ideas?
Supreme Member
Joined: Mar 2001
Posts: 2,047
Likes: 0
From: The State of Hockey
Car: 1987 Trans Am GTA
Engine: Miniram'd 383, 24X LS1 PCM
Transmission: TH700R4, 4200 stall
Axle/Gears: 9", 4.33:1
The O2 switches around and from ~ 0 to 900mv depending on the age and brand of the sensor. The ECM calculates BLM to show trends in the mixture, not instantaneous mixture as the O2 does. Everything sounds like it is operating just fine, and you have a rich mixture - possibly out of resolution (very) rich as well since 108 is often the floor of the BLM values allowable in the bin....
Oh, try dropping your FP a little.....
Oh, try dropping your FP a little.....
Thread Starter
Supreme Member
Joined: Aug 1999
Posts: 2,441
Likes: 1
From: sweden
Car: GTA -89
Engine: Blown 415"
Transmission: 4L80E
Axle/Gears: Strange 12-bolt
I reset the ECM 1 min before the reading.......One thing I noticed is that my ogygen sensor NEVER goes over 700 mV ever! I would really like to get it tunined before I install my ATI......
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