MECH, Thanks for the reminder about the EGR passages in regards to the Lean Burn. Today was the first day I had enough open hi-way in front of me to pursue the lean burn keeping a watchful eye on the TPS - not getting above 30% mostly in the 20% range using my Scan Gauge. The only times it would engage is on the slight down hill and it would engage even with 19% TPS. Would not stay in - maybe 30 seconds at the most. I also noticed it would indicate Lean Burn on deceleration at the same time it went into open loop -- full-on coasting. Is it right to be in open loop on deceleration and idle ?
IF, the EGR ports are not clogged up I am wondering what I need to check out regarding the LB mode. Is there a chance the ECU is lazy about making decisions...... yeah, I give car parts human characteristics when needed !
