Idle BLMs changing....
Thread Starter
Senior Member
Joined: Jul 1999
Posts: 786
Likes: 2
From: Guilford, NY
Car: 1988 IROC-Z
Engine: 350 TPI
Transmission: 700R4 w/TransGo
Axle/Gears: BW 9-bolt w/3.73s
Idle BLMs changing....
My idle BLM went from 119 to 133 in 15 seconds of idle time. Engine was at steady state conditions. MAF airflow was 6.7-6.9 gm/sec, rpm was 625-650, INT was about 131. O2 volts was low, but changing, slowly got more rich.
I just never seen this before. How can the BLMs change that much in a SS idle condition? I am tuning with a new MAF sensor.
I just never seen this before. How can the BLMs change that much in a SS idle condition? I am tuning with a new MAF sensor.
Member
Joined: Mar 2004
Posts: 165
Likes: 0
Re: Idle BLMs changing....
My idle BLM went from 119 to 133 in 15 seconds of idle time. Engine was at steady state conditions. MAF airflow was 6.7-6.9 gm/sec, rpm was 625-650, INT was about 131. O2 volts was low, but changing, slowly got more rich.
I just never seen this before. How can the BLMs change that much in a SS idle condition? I am tuning with a new MAF sensor.
I just never seen this before. How can the BLMs change that much in a SS idle condition? I am tuning with a new MAF sensor.
Thread Starter
Senior Member
Joined: Jul 1999
Posts: 786
Likes: 2
From: Guilford, NY
Car: 1988 IROC-Z
Engine: 350 TPI
Transmission: 700R4 w/TransGo
Axle/Gears: BW 9-bolt w/3.73s
Re: Idle BLMs changing....
Did 2 more road test scans today, and idle BLMs were steady. Early am scan to work, idle BLM was 115. PM scan to home, idle BLM was 122. Ambient conditions were quite different between the 2 scans.
Thread
Thread Starter
Forum
Replies
Last Post
