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

suprra_girl · 04-04-2006, 11:20 AM

what sensor does it use to give a a/f reading?

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

04-04-2006, 11:20 AM	#2
suprra_girl 7M POWAH! ;) Join Date: Jun 2004 Location: New Zealand Posts: 2,312	what sensor does it use to give a a/f reading? __________________ Please use the forum to ask your questions as they will get replied to much faster than pming me Pics of my build. "Good girls are just bad girls that don't get caught" Do a diagnostic first!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Want to buy a Supra, though having some problems finding one.	Cypherbku	MKIV Supra	3	03-03-2009 01:45 AM
problems problems problems....	86SupraMan	MKIII Supra	5	02-04-2008 04:28 PM
Starting problems and accleration problems!	alekjame22	MKIII Supra	6	03-17-2007 11:19 PM
Oil leak problems	adellicson	MKIII Supra	1	03-04-2007 10:11 PM
problems, problems, and problems	tone loc	MKIII Supra	6	09-06-2006 04:35 AM