Tubasteve - **update** 10-3-2015 -new pictures

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Postby tubasteve » Fri Nov 21, 2008 3:20 pm

SO FOR THE PAST COUPLE OF WEEKS IVE BEEN PUTTING OFF THE BAD O2 SENSOR. IVE HAD A CEL ON FOR 02 TOO LEAN. ALSO MY CAR RAN ROUGH IN THE MORNING AT TIMES, UNTIL WARM AND START BOOSTING(AND I MEAN LIKE RUNNING 800cc INJECTORS ON MY STOCK ECU AND STUFF, LIKE FLOODING IT) IT WOULD FEEL LIKE A CARB. CAR WITH THE COLD BLOODED THING. IT HAD A HEAVY LACK OF POWER WARM OR COLD AND 10-11 PSI.

LAST NIGHT

MY BUDDY AND I WENT OUT TO RUN AROUND IN A CANYON AND ON THE WAY BACK I NOTICE THE CEL IS OFF, BUT THOUGHT IT BURNT OUT SO I TURNED IT OFF AND CHECK CAME ON AND WENT OFF, AND WENT TO PULL AWAY FROM THE LIGHT AND I HAD POWER AND A CAR THAT PISSED ME OFF, CAUSE I CHECKED THE O2 FOR TWO DAYS, AND IT WAS FLAT LINED AT 0.05V....

BASICLY IM ASKING IF ANYONE HAS HAD THIS KINDA SAME PROBLEM...
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Postby RedCelicaTRD » Fri Nov 21, 2008 6:04 pm

If it there is no response the o2 sensor is totally dead. Interestingly enough I don't think there is a CEL for a totally dead sensor.
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Postby tubasteve » Sat Nov 22, 2008 8:19 am

when an 02 is failing or bad it goes to a lean state, thus i got a "lean code" but 8-12 mpg would prove different, i dont boost 24/7, or race it. so it was telling the ecm that it was lean, black crap all over my newly painted car, i cleaned it today, car is running bitchen, my dad seems to think i got the 02 got red hot last night and it helped it some how, dun know, but im gunna man up and just buy a n.d. 02 tomorrow. i really wish i knew what happened, cuz this doggin thing just went away, like the car is night and day, like it doesnt have to boost anymore to just go.....but just like the dogging thing, i parked it and 2 hours later is when it started doing it, and now its been two days and drives like it should.....so i was about to go with the st205 ecu and set up, or the rc/cs, i have all the stuff, but im looking into a hondata, cause this is weird.
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Postby EricGT4 » Sat Nov 22, 2008 4:46 pm

Hondata? Just buy an AEM and be done with it. Plug and Play.
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Postby ummmiono » Sat Nov 22, 2008 6:38 pm

Go megasquirt! Why would u go hondata? Actually I'd use the st205 setup and then go aem. Hope u find the problem
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Postby tubasteve » Wed Dec 24, 2008 8:10 am

couple new updates, car has a show room, paid too much paint job. i got a color a little brighter than stock, and it turns heads(red) ill post pics as soon as the storms stop here. well, its been 2 week scene i took out my a/c idle thing and i list my check engine light code for the o2 code. cause the air was leaking from it, and i just realized when it was cold. i set timing here about a week ago back to stock, and i went to the snow and it would run to 7- 10 psi, then id hear that great noise of knock/ping and lose ALL boost. i then came home and reset the timing to 5, and yes I know how to set it. little inside; its a jdm motor with the usdm ecu, and i will get an egr after a good boost or two, good timing(cel vs. boost), for egr used during boost. the car is fighting me, i had that terrible hard start when cold issue, so i fixed that with taking out the cold start. i dont know, i just dont want to start building with the stuff i have ready if my car doesnt run right stock. if anyone in the area is local and want to cruz by, be my guest. pm me bout that if not post your ideas.
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New year

Postby tubasteve » Sat Jan 03, 2009 12:29 am

i installed the new ecu(93 rc) i have the 95 soon to be installed when i get money and parts, ive had the ecu for almost 4 months now, installed it. ran to my local gas place got some 110 oct.(not cheap) and well thats my update as of now. i need a mid pipe bad, any ideas? im willing to get cat back...let me know
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Postby Corey » Sat Jan 03, 2009 12:33 am

You say you installed an RC ecu. Did you also install an RC AFM?

And does that 110 oct have lead in it by chance? And as everyone on here has been beating into my skull for months now, jdm ecu only needs ~94 octane at 12psi. It will love 98 though.

110 seems excessive.
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Postby tubasteve » Sat Jan 03, 2009 3:42 am

4 part 110, 10 part 91.....and no r/c afm...i know ive herd it's bigger, im not notice any ping or knock. is there another reason other than running lean? please fill me in!!! it's "low lead" im running no cat's as well as the o2 in japan doesn't need a heater so thats only $20 for a denso.

its parked for now, i was just bored yesterday, and went to hook it up, im going stand alone when i get a the money, this holiday season just killed me.

last thing, anything else i should know?
thanks ahead of time!!!

-steve
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Postby Corey » Sat Jan 03, 2009 4:18 am

The RC AFM:

It is larger, and pinned differently. It delivers different signals to the ecu than the standard one - this is likely one of your main issues.

The Octane:

Leaded fuel will damage O2 sensors. Just because it says low lead, doesnt mean its safe - Here is an example:

Aviation 100 LL (low lead) contains 2x the amount of lead as LEADED auto fuel from the last century.

So - this is very likely killing your O2 sensor, and spark plugs, and cat if you still had it installed.


The Smaller AFM is probably causing your Lean running condition. The 110 octane is suppressing any detonation it may be causing - I know, i had a similar issue just a few weeks ago due to a damaged AFM. Running 98 octane prevented the detonation, but not the underlying issue.

I would stop using the 110 octane fuel, and just use some 94 unleaded - its all you need.

You mentioned you are going to install a 205 ecu and get rid of the AFM system.

Until then, i would reinstall the stock ECU, which is USDM right? This should run perfectly fine on 91-94 octane.
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Postby tubasteve » Sat Jan 03, 2009 5:04 am

i currently am having No issues what so ever with lean or ping, my data stream isnt showing it at least, and its a mix of 91 and 110, im not worried bout the plugs(cheap) and o2 sen. is cheap as well. i just wanted to know if this ecu i bought worked, to make sure i didnt just buy a brick. my motor is a jdm w/o egr, and no cats at all. where u are from can you get the stuff i need to do the 205 ecu conversion or can i find it locally here from other toyotas?

thanks
steve

also i like the way vp smells :oops:
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Postby Corey » Sat Jan 03, 2009 5:57 am

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Postby syko says » Sat Jan 03, 2009 7:41 am

Sorry for the off topic, but WOW! great find Corey! I am seriously looking into that now. Post it in the EFI section.
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Postby Corey » Sat Jan 03, 2009 8:20 am

Already did ;) about 3 weeks ago i think

in the 205 conversion thread
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Postby tubasteve » Wed Jan 07, 2009 12:01 am

A birthday gift I wasn't expecting. A st205! the car is red and has about 65k ki. my uncle is setting this up to be shipped as a suprise. but sence the car was never brought over here its taking longer than usual. he had it all ready, steam cleaned and all when the didn't pass it(yet) they are looking @ 2-3 weeks min. for shipping the car. my uncle hasn't told me much, other than move in with him and ill get to drive it much faster! the car is all stock, guy "died" whom owned the car. my uncle picked it up for cheap he says. but we'll see. he is a plane guy...

thanks

-steve
and today is my birthday
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5x114 conversion: http://tinyurl.com/nu3qnez
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