Block 217 (lanbda) and blocks 31 & 33 discrepancies >>
04-09-2006, 04:37 AM
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Block 217 (lanbda) and blocks 31 & 33 discrepancies >>
Until I receive and install my AFR & EGT gauges I must continue to us the pro-diag tool.
Blocks 31 & 33 show pre-cat O2 sensor voltage in mid-range and part throttle of ~.65 - .75, however, fluctuates below those readings. These blocks indicate that I'm running very rich.
Block 217, however, shows 1.0 at mid rpms (full or part throttle)...hitting .85 toward the top and at redline ~ .78....or 11.5/1 AFR. These readings in 3rd / 4th gear at WOT.
Now, I know WOT at the top carries a good AFR (perhaps a little rich but my boost is extremely high)...my concern was part throttle stuff. Block 217 implies (at a 1.0) that I'm ok. Blocks 31 & 33 (at .65 - .75...even lower than .65) indicates a very rich mix.
What would cause the discrepancy? Is block 217 accurate for part throttle "get up and go"?
Gotta get that gauge
Blocks 31 & 33 show pre-cat O2 sensor voltage in mid-range and part throttle of ~.65 - .75, however, fluctuates below those readings. These blocks indicate that I'm running very rich.
Block 217, however, shows 1.0 at mid rpms (full or part throttle)...hitting .85 toward the top and at redline ~ .78....or 11.5/1 AFR. These readings in 3rd / 4th gear at WOT.
Now, I know WOT at the top carries a good AFR (perhaps a little rich but my boost is extremely high)...my concern was part throttle stuff. Block 217 implies (at a 1.0) that I'm ok. Blocks 31 & 33 (at .65 - .75...even lower than .65) indicates a very rich mix.
What would cause the discrepancy? Is block 217 accurate for part throttle "get up and go"?
Gotta get that gauge
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