Rich when coming to a stop.

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Feb 15, 2009 | 06:53 PM

phasemaster1

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Rich when coming to a stop.

When coming to a stop my AFR gets rich like low 11's. Where is a good place to look? Thanks

Jaime

Feb 15, 2009 | 11:14 PM

dc_justin

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Quote:

Originally Posted by phasemaster1

When coming to a stop my AFR gets rich like low 11's. Where is a good place to look? Thanks

Jaime

Your injector pulse width voltage adjustment table is likely too high (injector dead time settings), causing more fuel to be injected than the PCM is expecting.

Feb 16, 2009 | 05:36 PM

phasemaster1

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Quote:

Originally Posted by dc_justin

Your injector pulse width voltage adjustment table is likely too high (injector dead time settings), causing more fuel to be injected than the PCM is expecting.

why would it only do it when coming to a stop? once it sits at idle it goes to 14.5-14.7.

jaime

Feb 16, 2009 | 05:38 PM

dc_justin

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Coming to a stop will often have lower pulsewidth than idle, as you're in greater vacuum.

Feb 16, 2009 | 06:32 PM

phasemaster1

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Thanks Justin I will start looking at my injector pulsewidth's when i stop

Feb 18, 2009 | 11:53 AM

phasemaster1

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Do you mean the injector offset voltage table? My numbers are the same across. For example the 13.0volt row is .4730.

Feb 18, 2009 | 03:52 PM

phasemaster1

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Checked my pw's the lowest I saw was 1.5ms but only twice in 30 min log most of the time they remained in the 1.8ms-1.9ms. I would have thought these had to be below 1.5 everytime to act goofy.