maxitoman007
Member
- Joined
- Feb 15, 2017
- Location
- Calgary, Alberta, Canada
87 740 Turbo lh2.2. I recently replaced my o2 sensor and was able to tune my AFR in the ballpark by observing the sweep. However I recently discovered an exhaust leak which has since been fixed and I decided to retune. So I started again and at the start everything went well numbers was rich as expected so I leaned it out a bit, but then almost right after my car began to misfire, cylinder 3. So I stopped the carvan restarted it thinking it might help. Misfire stopped, but I look and now my o2 sensor is staying below 0.5v (0.2-0.4) indicating lean. So I try to richen it out but The voltage won't change. I would hate to have to replace my o2 sensor again after literally 2 days but I don't know what else it could be. I'm pulling 18 mm HG vacuum cold at idle so I doubt it's a vacuum leak.
Since finishing my build about 3 weeks ago and only starting it and letting it idle in the garage occasionally since then, I've killed a narrow band and a wideband sensor and now maybe a brand new replacement narrowband. WHAT IS HAPPENING!?
Since finishing my build about 3 weeks ago and only starting it and letting it idle in the garage occasionally since then, I've killed a narrow band and a wideband sensor and now maybe a brand new replacement narrowband. WHAT IS HAPPENING!?
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