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  #1  
Old 06-12-2013, 07:19 PM
1turbo6 1turbo6 is offline
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Default poor idle help needed

I have been chasing this for a while and not sure it's an issue but would like an opinion please. just replaced 02 sensor and also installed aem inline wideband today. heres a log at idle.
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Old 06-13-2013, 11:07 AM
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TurboDave TurboDave is offline
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What kind of shape is your stock O2 in?? It only shows what I would call normal activity from the 49 second point to the 73 second point. Outside of that it shows full lean, barely registering. And since the narrowband is what controls your fueling during idle conditions I'd have to wonder what's up?.

You can see your wideband trace go leaner and more ragged looking during the narrowband's lean time. Obviously a lot of lean misfires.
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TranslatorPro MAFless fuel, spark, boost and fuel pump management

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Old 06-13-2013, 01:23 PM
1turbo6 1turbo6 is offline
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just installed new denso o2 and the aem wideband this is the first start.
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Old 06-13-2013, 02:32 PM
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TurboDave TurboDave is offline
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Well, with two new O2 sensors, something is causing it to idle too lean.

Is there any idle fuel adjustability in your chip? If so, bump it up 10% and see what happens.
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Sevierville, TN
TranslatorPro MAFless fuel, spark, boost and fuel pump management

Now using SD2 system.

86 GN(TranlatorPro/ExtenderPro on speed density w/boost and fuel pump control,PLX-WB)
87 GN(stock, for show)
01 Excursion LTD 7.3L PSD(Power Stroke Diesel), Turbo, 4X2 (big puller)
12 Lincoln MKT, 3.5V6 Twin Turbo Ecoboost 365HP (driver)
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Old 06-13-2013, 02:45 PM
1turbo6 1turbo6 is offline
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I think I am going to try to adjust the translator to +10%. Fuel pressure seems to be correct, also checked my gauge against another pressure gauge.
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Old 06-13-2013, 03:25 PM
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Dave, try it again while wiggling the O2 wire. Maybe there is a weak connection. The O2s signal is definitely funky. Also might see what they do at 1500 rpm...
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