4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

please help

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Old Jul 22, 2008 | 08:04 PM
  #1  
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Default please help

I need help! I check my air to fuel ratio and it was really rich like 11.8 so I used my tuner and made it 6% leaner 'that was the max' so now its at 12.2 which is still rich! so how do I adjust it? im stuck here... I want it to be at 13.2
Old Jul 22, 2008 | 09:36 PM
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Default RE: please help

any ideas?
Old Jul 22, 2008 | 09:40 PM
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Default RE: please help

Is that at idle, WOT or an average?
Old Jul 22, 2008 | 09:55 PM
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average or wot....
Old Jul 22, 2008 | 10:03 PM
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oh that was wot...
Old Jul 23, 2008 | 09:42 AM
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Default RE: please help

please does anyone have an idea? idle is around 14 but wot is 12.2 is it cuz i changed to colder plugs?
Old Jul 23, 2008 | 09:43 AM
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Default RE: please help

oh yeah the car smells gassy too?
Old Jul 23, 2008 | 10:44 AM
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Default RE: please help

F*** it! Turn ur timing up and let it eat! LOL. Idk, Id check things like ur upstream O2s... bad ones could do it. Also, have u f'ed with ur cooling system? If ur car doesnt heat up to like 185 degrees it will stay in cold run mode which dumps a lot more fuel in. People that set the values too low on their fan temps and also run anything colder than a 180 thermostat have had problems with that.
Old Jul 23, 2008 | 04:53 PM
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Default RE: please help

Sounds like a sensor problem. You should be at 14.5-15.1 at idle and cruise and 13 at wot (NA). Which means you are running rich because something is reading wrong. Its not the o2s because they have no effect on wot. It could be the ECT so data log it and see what it is. My guess would be the MAF. Clean it and make sure is is facing the way it did from the factory.

Old Jul 23, 2008 | 09:56 PM
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there's no codes if the mafs bador needs to be cleaned wouldn't there be a code?? ill do a data stream in the am and post it so u know all that stuff.... I never messed with the mafs So.... there really maf cleaner?



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