Possible A/F Problems

808Supra · 04-04-2006, 09:12 AM

Hey guy's
I installed a turbo timer a while back and i was watching the a/f read out for the first time today. It jumps around alot between.01 and .5 which im pretty sure is both way to rich and way to lean for idle, im also getting a pretty rough idle. However the acceleration is smooth even though the A/F read out ontinues to fluctuate alot. Does this mean theres a bad sensore some where bad TPS, anyone know some possible problems how to troubbble shoot them and/or how to fix them?

Also i have a proformance chip, that i havent installed, dont these basically just inrich you a/f ratio? if so im already running far to rich, how can i lean out my a/f and does the stock ecu add extra fuel for the extra boost preasure? so far only 12 untill i got my to4b

04-04-2006, 09:12 AM	#1
808Supra Stock Join Date: Feb 2006 Location: Hawaii Posts: 23	Possible A/F Problems Hey guy's I installed a turbo timer a while back and i was watching the a/f read out for the first time today. It jumps around alot between.01 and .5 which im pretty sure is both way to rich and way to lean for idle, im also getting a pretty rough idle. However the acceleration is smooth even though the A/F read out ontinues to fluctuate alot. Does this mean theres a bad sensore some where bad TPS, anyone know some possible problems how to troubbble shoot them and/or how to fix them? Also i have a proformance chip, that i havent installed, dont these basically just inrich you a/f ratio? if so im already running far to rich, how can i lean out my a/f and does the stock ecu add extra fuel for the extra boost preasure? so far only 12 untill i got my to4b