 Fuel trim help?, short and sweet |
 Dec 27 2007, 08:22 AM
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#1
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 Post Master  Group: Members Posts: 864 Joined: 12-July 05 From: Illinois Member No.: 556  |
Ok guys , i need to know what you guys know about fuel trims. My car is running way lean and i cant figure it out . All my fuel trims ( no matter if at idle or WOT ) are well over 100%. I have a walbro pump and the rest is stock. ALthough i do have a new fuel filter. I have switched the injectors twice now and that did nothing. The O2-R reading fluctuates between .3 to .9 all the time.
I just need some of your ideas since im not very educated on the hole tuning part yet. So just gimme some info on things to check. Oh, and ive also changed the FPR a few times also, my brother has my aeromotive on his car but i will get it back very soon. thanks -------------------- "One of the most Crazy and Undecisive Members in central Illinois"
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Dec 31 2007, 09:46 AM
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 Post Master Group: Members Posts: 908 Joined: 7-October 03 From: Chillicothe, IL Member No.: 182 |
If you want to adjust your trims back to close to stock you need to turn the MAF adjustment screw.
-Take the MAF lose of the air filter canister -On the bottom side you will see a big round spot that is probably filled with RTV -Scrape off the RTV -Turn the screw IN one full turn. This will block off some of the unmetered air and get your fuel trims closer to 100% -Check your trims to see where they end up after you have completed this and a brief drive -------------------- GVR4 866/1000 = the perpetually broken car
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Posts in this topic
treydawgs4g63T Fuel trim help? Dec 27 2007, 08:22 AM
awd4kicks Natedogg and NCGalant will be your best bet for ex... Dec 27 2007, 11:08 AM ncgalant If your O2s are cycling like they should then your... Dec 27 2007, 11:45 AM natedogg What exactly are your trim numbers? If you're... Dec 27 2007, 05:02 PM treydawgs4g63T QUOTE (natedogg @ Dec 27 2007, 05:02 PM)What ... Dec 27 2007, 05:34 PM ncgalant Fuel trims will run anywhere from 80-139%. The O2... Dec 28 2007, 07:15 AM natedogg I still suggest an AFPR with the Walbro at some po... Dec 28 2007, 11:01 AM ncgalant QUOTE (natedogg @ Dec 28 2007, 11:01 AM)I sti... Dec 28 2007, 04:12 PM treydawgs4g63T i am getting my AFPR back from my brother this wee... Dec 28 2007, 08:03 PM
treydawgs4g63T ok, thanks! will do and let you know what happ... Dec 31 2007, 03:00 PM |
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