BLM 116, is it a problem?
Thread Starter
Pro
Joined: Dec 2002
Posts: 522
Likes: 3
From: Rolling Meadows IL
BLM 116, is it a problem?
I finally got my cheep ebay IBM ThinkPad working with WinALDL. :hurray: Who knew that you needed a special ThinkPad Configuration tool to turn on the serial port. :confused: Any way at idle my BLM is 116. It’s an 85 so only one O2 sensor. Looks like I am a little rich. I have Ford 21 lb. injectors and 40psi fuel pressure. Is this anything to worry about. How low can I go with the fuel pressure.
Le Mans Master
Joined: Jan 2000
Posts: 8,918
Likes: 27
From: New Hill NC
Re: BLM 116, is it a problem? (dave_85)
The combination of higher pressure and injectors would likely make the computor sense a rich condition. I would look at how many changes (counts) that the OX sensor goes from rich to lean. If it is changing back and fourth, it will probably be OK.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: BLM 116, is it a problem? (dave_85)
Back off fuel pressure to around 30psi and see where the BLM value goes after a few minutes.
I think your stock FP was only around 38psi with 22lb/hr stock injectors.
To tune the fuel flow at WOT, adjust fuel pressure till you see an O2 value of around 920mv at WOT.
I think your stock FP was only around 38psi with 22lb/hr stock injectors.
To tune the fuel flow at WOT, adjust fuel pressure till you see an O2 value of around 920mv at WOT.
Thread Starter
Pro
Joined: Dec 2002
Posts: 522
Likes: 3
From: Rolling Meadows IL
Re: BLM 116, is it a problem? (MrNuke)
I drove it around with the BLM chart turned on. I saw lots of points where BLM is between 124 - 128'. The rich/lean counter changes often to. I think I am OK with the fuel pressure.
One thing I saw in the flag data was ".DRP occured". What is a DRP?
This WinALDL scanner is very cool. Thank You Jonas. :cheers:
One thing I saw in the flag data was ".DRP occured". What is a DRP?
This WinALDL scanner is very cool. Thank You Jonas. :cheers:
Team Owner
Joined: Mar 2000
Posts: 83,384
Likes: 88
From: Boston, MA
Re: BLM 116, is it a problem? (65Z01)
To tune the fuel flow at WOT, adjust fuel pressure till you see an O2 value of around 920mv at WOT.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
Thread Starter
Pro
Joined: Dec 2002
Posts: 522
Likes: 3
From: Rolling Meadows IL
Re: BLM 116, is it a problem? (scorp508)
I found it at http://www.carlton24v.co.uk/datasheets/o2sensors.pdf
