AFR 11.2 at idle after removing fuel vapor system Solved!
08-24-2011, 07:17 PM
#1
Burning Brakes
Thread Starter
AFR 11.2 at idle after removing fuel vapor system Solved!
HELP! I removed the fuel vapor system and blower motor assembly on my track car and now my AFR is 11.2 at idle. It idles very smooth and doesn't change much with throttle. When I first start the car it reads 14.7 then slowly drops down to 11.2 and stays there.
I have checked all the vacuum lines (what's left) and strong vacuum. I disconnected the piggy back and installed the test plug - same result. I disconnected the O2 sensor - same result. I think it's electrical at this point. I also had the MAF removed while doing some other stuff. It's all Vitesse. Help!
I have checked all the vacuum lines (what's left) and strong vacuum. I disconnected the piggy back and installed the test plug - same result. I disconnected the O2 sensor - same result. I think it's electrical at this point. I also had the MAF removed while doing some other stuff. It's all Vitesse. Help!
Last edited by 400hp944; 08-24-2011 at 10:01 PM. Reason: problem solved
Yeah I would.nt have said anything either! 
09-17-2011, 01:03 PM
#7
Racer
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HELP! I removed the fuel vapor system and blower motor assembly on my track car and now my AFR is 11.2 at idle. It idles very smooth and doesn't change much with throttle. When I first start the car it reads 14.7 then slowly drops down to 11.2 and stays there.
I have checked all the vacuum lines (what's left) and strong vacuum. I disconnected the piggy back and installed the test plug - same result. I disconnected the O2 sensor - same result. I think it's electrical at this point. I also had the MAF removed while doing some other stuff. It's all Vitesse. Help!
I have checked all the vacuum lines (what's left) and strong vacuum. I disconnected the piggy back and installed the test plug - same result. I disconnected the O2 sensor - same result. I think it's electrical at this point. I also had the MAF removed while doing some other stuff. It's all Vitesse. Help!
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09-18-2011, 10:49 PM
#8
Burning Brakes
Thread Starter
This issue happened the night before I left for a 3 day charity race at Mazda Raceway Laguna Seca, and I forgot to post back as to the results.
I believe I had an under laying vac issue prior to removing everything. After getting it all buttoned up, the car started perfectly, but idled firm at 11.2. After a quick email to John @ Vitesse, he suggested several areas to check. When I read "FQS setting" the light bulb went on. I remember a while back having to increase fuel via the FQS to +6%. I did this after having to re-load a tune map because of some strange corruption to the file. It has run fine with that setting for the past year or more.
Anyway, thanks to John I was able to make the quick adjustment and hit the road. Car is spot on and runs sweet. Thanks for the help John!!!
I believe I had an under laying vac issue prior to removing everything. After getting it all buttoned up, the car started perfectly, but idled firm at 11.2. After a quick email to John @ Vitesse, he suggested several areas to check. When I read "FQS setting" the light bulb went on. I remember a while back having to increase fuel via the FQS to +6%. I did this after having to re-load a tune map because of some strange corruption to the file. It has run fine with that setting for the past year or more.
Anyway, thanks to John I was able to make the quick adjustment and hit the road. Car is spot on and runs sweet. Thanks for the help John!!!
