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vafc crap new problems

Old 03-09-2007, 03:10 PM
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Default vafc crap new problems

my vafcII isnt letting me turn down my injectors, i had 450's in and had them tunrned all the way down and it was running super rich, 10:1 now i put 390's in and its still doing the same thing, ive double checked the wirirng and its dead on. vacumm to the map is good, no cel's afr's are still 10.0 at idle and its not the wideband cause its so rich its puffin out some smoke.lol im not sure why its not turning them down ??
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Old 03-09-2007, 04:05 PM
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Default Re: vafc crap

is your signal set right?
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Old 03-09-2007, 09:47 PM
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Default Re: vafc crap

Rock an FMU
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Old 03-09-2007, 09:52 PM
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Default Re: vafc crap

Have your grounds spaced out properly? Maybe it's just a bad unit. :P
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Old 03-10-2007, 01:18 AM
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Default Re: vafc crap

Originally Posted by Joseph Davis
Rock an FMU
---- yourself

signal is set and down and to the right ( cant point it up and to the right cause then it reverse's my throttle percentage)
i thought this to but if i change it like i said it changes my throttle %


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Old 03-10-2007, 09:51 AM
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Default Re: vafc crap

Originally Posted by ososlohatch
---- yourself

signal is set and down and to the right ( cant point it up and to the right cause then it reverse's my throttle percentage)
i thought this to but if i change it like i said it changes my throttle %


mayby just got a bunk unit then.
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Old 03-10-2007, 11:59 AM
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Default Re: vafc crap

Originally Posted by sikcrx89
mayby just got a bunk unit then.
not likely, ive never heard of that, but im sure its possible
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Old 03-10-2007, 03:57 PM
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Default Re: vafc crap

alright well i kinda fixed the problem, my in outs were switched which i thought i checked but i must have just checked the connection and not the wire routing now it starts and runs fine no smoke. but after running for like 30 seconds it drops to rich then to lean (wtf) and then my car will die. im not sure if its cause i dont have a stock o2 sensor hooked up or something ??
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Old 03-10-2007, 11:21 PM
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Default Re: vafc crap

Originally Posted by ososlohatch
alright well i kinda fixed the problem, my in outs were switched which i thought i checked but i must have just checked the connection and not the wire routing now it starts and runs fine no smoke. but after running for like 30 seconds it drops to rich then to lean (wtf) and then my car will die. im not sure if its cause i dont have a stock o2 sensor hooked up or something ??
Only at idle right? I remember the last time I used an afc I had to turn the 500-1000 rpm range up to around -28 or so to keep it idling...injector latency from the 450's was too much with the factory ecu settings.
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Old 03-11-2007, 03:10 PM
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Default Re: vafc crap

i havent been drivin it due to the fact i cant even get it to run right in my garage..lol. im not sure why it would go to 10:1 then a second later jump to 16:1 then die ? wtf im not throwing anycodes but i dont have a stock o2 sensor hoooked up, thats the only thing i could think of
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