ChefYota4x4

iTrader: (5)

I sent a letter to Denso asking them to have a "Battle of the O2 Sensors: In Toyotas, Hondas, etc." type study... They wrote back and said, "YOU CRAZY O'WOT white boy?"....that's all they said, so I don't know what to make of that one, hahaha, jk. No, they did actually write back and say that "They've won almost every longevity and functionality and range of error study known or brought against them", etc., etc. ,etc....and never really answered my question. I'll be writing again....as I NOW HAVE TO KNOW, since it's such a major topic in "TOYOTA WORLD", eh? I put in a Brand New Bosch, top of the line O2 in both brand new and older Yota Motors......Neither one worked properly. However, I"ve heard that the Ford Escort Heated O2 sensor from 91-94 or something like that, which I was told was Bosch, worked PERFECTLY in Toyotas with set ups where the O2 had to be set back further, as with mine.

I also had a set of Bosch Platinum Plugs in my truck for 100K before I rebuilt it,...they still looked good when I took them out and seemed to work fine on the performance end.

Another rumor I've heard, from a Toyota Dealership foreman is that the Denso O2 Sensors they get are NOT the same as the ones available aftermarket from Denso... Denso also didn't answer that question, but I can't imagine it's that much different if at all, unless they put Ruby's in there or something! lol.

Always interests me,...the OEM vs. OE debate, hehe.

scope103

Jumper TE1 to E1, read the voltage (to E1) on Vf1. The FSM recommends that it be "warmed up" but strictly speaking that isn't necessary because it is a heated O2 sensor, and starts working within seconds. But if it fails this test, it is a good idea to run it at 2,500 rpm for 90 seconds, just in case it was the heater and not the sensor itself that failed.

Given that you've put so much money into this already, I recommend that your REMOVE the plenum (upper intake manifold) and clean it properly. As others have pointed out, you may have a lot more crap in there than you realize.

I didn't have the NOx problem, but I did have lots of junk. I let it soak overnight in the sink with a very strong solution of dishwasher detergent (one of the few advantages of living alone). Then I had grease-free gunk. I used a 12" wooden stick to chip out the crud (the plenum is aluminum, so you need a light touch.) And I finished it with a bottle brush and paint thinner.

If I did it again, I'd knock out the end caps so I could properly reach inside. The end caps look like freeze plugs, but the dealership (I'm told) stocks them.

Did it make a difference? Before, my idle-ups (A/C and Power Steering) didn't work -- afterwards they did.

91_TOYOTA_4x4

well i got it decently clean or the best i could do with what i had lol. dont know if it helped yet because my o2 sensor is still bad so yeah thats next then aircare

yeah Chef that little tube was the most annoying part lol. was super clogged and took me like 3 hours of on and off cleaning it so i wouldnt snap haha. i just kept soaking it then trying to ram the stuff out, used some guitar strings, rags, little pick things and it flows great now. still dont know if the actual valve is functioning so im going to have to test it tomorrow. what vac line do i use and where do i pur it on the valve? i know if it is working then its supposed to idle down and kinda die? right? lol

bajarunner i didnt see that pipe you speak of? the cast piece went into the plenum and thats all i could see? i made sure all those little lines running off the valve and the other similar thing next to it where clear too. oyah and i used some rtv silicon and it said fine for o2 stuff or whatever so that should be good. im going to have to take a look tomorrow and see about that pipe.

thanks for the help guys i really appreciate it!

91_TOYOTA_4x4

i would pull it apart but im selling it and i dont have the time to do a full cleaning. dont want any problems for the next owner but im sure it will not hurt. just need to make sure this NOx thing gets worked out so it will stop burning o2 sensors so the next owner can just drive it. im going to mention to whoever buys it that they should maybe do seafoam since its the easyest way to get stuff clean .

ChefYota4x4

iTrader: (5)

Ahhhh, that's right, it's a newer RE, so it's "Heated O2", indeed. Thanks, Scope... I'm thread bouncing so much due to being sick and not working that, well, I FORGOTEDED, hahaha.

Seafoam might be the EASIEST way, 91,....but certainly not the most thorough. Actually, I can take off my plenum, valve cover and intake in around 1 hour. Just the plenum?...20 minutes, max. It's not that difficult, and many guys take it to the Pressure Washer(self wash car wash) thingy, lol. They said it peels the stuff right off. I had mine mildly blasted and then drop tanked by a machinist....took 10 minutes and it was like BRAND NEW, out of the box, lol. I also pulled all the ports where the hoses go into the plenum....they were just TOO caked with hardened crap, plus, some of them needed to be out for the tank soak and rinse. Soaked those ports like the steering for a couple days in parts cleaner...VOILA! lol... Same thing, I suddenly had idle up for steering again, etc.

Best wishes on the sale, 91,

Mark

91_TOYOTA_4x4

oyah im sure i would have no problem doing the task and that pressure washer idea is great lol. i just dont have the time to start ripping it apart while i have people seeing the truck right. i did my best with the egr so hopefully that and a new o2 will get it to pass aircare and then i can move on to the 4runner

oyah kinda funny when i dont drive my truck for a while then go drive it and it feals so weird, like o i remember you old T yotee hahaha. going to miss this truck a little

ChefYota4x4

iTrader: (5)

There are many more out there, 91. I'm not really "emotional" about my rig...while I do love it! lol. Yeah, it's grown on me alot! I'd sell it if I had to though. It's just that, I finally figured out that "if I replace almost everything and then restore what I can't replace....I guess I should just keep it, as it's becoming like a brand new truck." I don't know, I guess after driving a few of them like A MILLION MILES with no issues.....you get spoiled with the 22re. Easy to work on, too.

HOWEVER: I would like to build an 85 or 84 4Runner with a lexus V8 in it, when I'm done tinkering with mine. Just need time to save for it and time to do it, lol. TIME, TIME, TIME....it's a cruel mistress that never seems to stick around...always running away from me! hahaha.

Best wishes with the sale, 91!

91_TOYOTA_4x4

hahaha time is a bi**h is right! wish time would go away lol.

yeah im not to emotional about it but it is my first vehicle so uts kinda special ina way lol. but man one thing that doesn't bother me about it going is all the little things that pissed me off lol thing failed aircare so many times after putting so much time and money into it, and drivetrain problems... its perfect now besides the backlash in the rear diff and the aircare thing, at least somebody can enjoy it now because after all the frustration i cant lol.

an 85 witha lexus v8 would be siiiick! make it way more fun to drive lol. i want to put a 2jz in the 4runner and eventually run a big single turbo and the whole 9 yards and be pushing 600hp hehehehe dont worry there will be dana 60's to handle that

ChefYota4x4

iTrader: (5)

Hey, wouldn't surprise me, 91... I'm in CA! lol.

I was just working on a friends rig in a place called Church Automotive. It's a fairly well known Dyno Shop here in Los Angeles...... PLUGGING THE EARS ALL DAY LONG was the pattern, lol. Anyway, they brought in a Yotatech Members truck, a 99 T-100 with a supercharged 3.4 and this and that and ....so on, lol. Pushed pretty well...I think 350HP. They even brought in a brand new Nissan GXR(??)...you know, the "Starline"(??) thing from Fast and Furious, but 2011 model. Believe it or not, there were many lil beater looking cars that TOTALLY out performed it. There was a 90-something or early 2000(I think) Honda Civic Hatchback, gutted, built for land speed.... it was pulling over 700HP and did 240MPH before even being tuned by Church.... DANG! Amazing what some of these guys get out of these lil 4 Bangers, eh?

I had a Cressida with a Z-series Motor(A performance Japanese Motor), that pulled around 300HP and plenty of torque, and was SERIOUSLY fast.... miss that lil sleeper. I think a first gen 4runner with a V8 is a sick idea, but especially sick with the Lexus 1UZ motors! The mileage would be better than even the 3.0 and WOWEE on the power, lol. Just seems coolest to me to put the toyota product in there... But I've seen MANY others, including a neighbor down the road from me who has a HO-SC 3800 V6 Buick Motor in his 83 Toyota 4x4 Pick up!(8" Lift and 39.5's, etc. etc. lol).

Sorry, getting off track here. ANY PROGRESS WITH THE 'O2 PROBLEMO'????

ChefYota4x4

iTrader: (5)

ps> 91... were you saying you were moving to the US? Sorry if I misremembered you as someone else from Canada that said they were doing so.

91_TOYOTA_4x4

haha right cali is a bi**h for aircare lol

your talking about a nissan skyline gtr? they are decently fast lol. thats pretty crazy out of a civic but hry its still a civic... lmao. personally i love toyota supra's, the 2jz is freaking amazing and can make around 600hp on pump gas, add meth and it can go to like 900 hp :O lol. some guys have even built the engines up even more and hit 1200hp haha. and its even been recorded of 2jz's on a dyno have made 2000hp lmao not for very long and not drivable but still freaking cool lol

thats cool dude! cressidas are cool little cars, had 7mge's which can be turbo'd from supra 7mgte's funny because they look like your average town car but then its a beast hidden inside hehehe deffs a sleeper

haha dont worry about getting offtrack lol and no im not moving to the US. have thought about it but probs not lol