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AE101 Owners Club is a group of 7th gen Corolla enthusiasts from all over the world. If you're a fellow enthusiast, then join us today!
 
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» E10 corolla saloon Rear Window Visor
 USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR EmptyThu Jul 04, 2019 10:44 pm by emmet.harten3

» Toyota Corolla ae101 fgxt front bumper and grill.
 USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR EmptySat Jun 29, 2019 10:44 pm by viperado

» My corolla 1.3Turbo
 USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR EmptyWed May 29, 2019 10:25 am by AE102GXI

» Just another corolla - DIY Caterham frame 7age and ´93 Liftback RWD
 USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR EmptyFri Mar 15, 2019 7:25 am by gold94corolla

» 99 AE101 BZ Touring 3sgte Build Thread
 USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR EmptyThu Mar 14, 2019 3:14 am by sonur

» Charlene the AE102
 USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR EmptyThu Jan 24, 2019 5:55 pm by Hiro

» OEM Koito BZ-Touring corner lights/singal lights
 USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR EmptyThu Nov 01, 2018 11:52 am by VicSierraV

» Daphne the ZRE182
 USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR EmptyMon Oct 15, 2018 10:19 am by Hiro

» NZ BZ Touring Wagon.
 USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR EmptyFri Oct 05, 2018 8:22 am by PunkSinatra

» UK AE101 Si hatch
 USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR EmptyMon Aug 20, 2018 7:04 am by miib14

» ★ The AE-202 Project (Continued) ★
 USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR EmptyMon Aug 20, 2018 7:03 am by miib14

» Kickfli12's AE102 wagon
 USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR EmptyMon Aug 20, 2018 6:38 am by gold94corolla

» 1996 'Rolla from Scotland!
 USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR EmptyMon Aug 20, 2018 1:05 am by miib14

» Grandpa`s Corolla
 USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR EmptySun Aug 19, 2018 9:47 pm by miib14

» RARE JDM OEM PARTS
 USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR EmptyTue Jul 24, 2018 11:55 am by haroon.virk

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  USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR

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redwing0001
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Posts : 40
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Join date : 2014-10-26

 USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR Empty
PostSubject: USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR    USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR EmptyTue Oct 28, 2014 3:27 am

I found the link to find out if the engine is good or not:

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&ved=0CDIQFjAC&url=http%3A%2F%2Fwww.autoshop101.com%2Fforms%2Fh27.pdf&ei=Im9OVPzgGoLZmgXtgoKAAw&usg=AFQjCNE31G-KBY05yVRry9YN38qEx7QEfQ&sig2=UUNE1WUogFig7-g-uI0mRw

Its a google document that has instructions on how to pull codes from an older toyota engine. But it also has information on how to test whether the oxygen sensor is giving a true reading or not.

The information is listed near the end of the PDF, look for this title:

USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR and follow the instructions there.
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redwing0001
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 USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR Empty
PostSubject: Re: USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR    USING VF TERMINAL AS A CLOSED LOOP AND A/F RATIO MONITOR EmptyThu Jan 08, 2015 6:38 pm

I had the chance to do this recently and I immediately noticed a change in the mileage of the car..... I had a MAP ENHANCER installed (potentiometer from MAP sensor output to ecu) and adjusted  it while looking at the VF pin output until the numbers started changing from 2.5V DC....

From that time on, it was running much better and more fuel efficient.

That was until spark plug 1 went out and I thought I broke something.... I even reset the ecu thinking it may change something and never did until I checked the spark plug..... only number 1 had black dry deposits..... all other ones had the usual tan brown on them.

changed it then regretted messing around with the potentiometers before.... I will need to check again to see if the map setting is dialled down again.
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