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Location:
Coffs Harbour
Registered:
October 2004
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 02 Sensor?
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Sat, 09 October 2004 11:23
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i was wonderin how much a new 02 sensor for my celica st162sx would cost? my car is running rich and also idling very strangley ie. idling very low nearly conking out even after i adjusted the idle. thanks guys
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Location:
tas
Registered:
June 2002
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Re: 02 Sensor?
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Sat, 09 October 2004 12:12
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wow its amazing how many st162 celicas have this idle problem, does the idle hunt up and down? and only does it after it's warmed up or after driving?
as for your question, i picked up an 02 sensor cheap here on toymods, just post in the wanted section and someone will have one to sell you :)-
you should check for error codes if you haven't already. If your O2 is bad it will probably tell you. If you don't know how to give me a PM and i'll explain.
a Bad Airflow meter can also cuase those symptoms.
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Location:
Coffs Harbour
Registered:
October 2004
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Re: 02 Sensor?
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Sun, 10 October 2004 04:05
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hey dood yeh thanks 4 that yeh its only after its warm and i drive it and yeh it goes up and down its realy crappy, i dont no how to check 4 error codes ?? so yeh ill need ya help on that my email is powertec5@hotmail.com if ya wanna chat, how much was ya 02 sensor ? and bad airflow meter im not sure bout that, how should i check it? mechanic ? k thanks dood
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Location:
tas
Registered:
June 2002
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Re: 02 Sensor?
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Sun, 10 October 2004 08:38
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Ok open up your hood and near the wiper motor you'll find the diagnotics block, find a paper clip or a bit of wire and short pins e1 and te1. Now go switch your ignition on (don't start the car)
look at your engine light (on the dash)
If there is an error code the engine light will flash the code(s) out. The way to read the flashes/blinks is like this.
blink..blink....blink..blink..blink = error code 23
the first lot of flashed are the first digit, then there is a slight puase for the next digit.
you might get more then 1 error code, and then it will repeat from the beginning.
Post the results.
by the way if the engine light flashes continually without puases
eg. blink..blink..blink..blink..blink..blink..
It means your ECU has no error codes stored.
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Location:
Coffs Harbour
Registered:
October 2004
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Re: 02 Sensor?
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Mon, 11 October 2004 02:14
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hey dood i did wat u said and it just had the blinking light flashing over and over again, so that mean that the O2 sensor is fine ?? so would it possibly be the airflow meter then ?? thanks
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Location:
tas
Registered:
June 2002
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Re: 02 Sensor?
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Mon, 11 October 2004 14:10
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Right then i'd say your O2 sensor is fine, and your AFM too.
Tell me more about your problem, you say it's running rich, how do you know? it does run rich when first started, but when warmed up you shouldn't have any visible smoke coming out your exuast.
when you adjusted the idle, where abouts did you adjust it? The screw on the Air flow meter? or the screw on the throttle body?
My friends celica 162 has the same idle problem you have, aswell as running rich and poor power/fuel economy. His problem was a dead o2 and AFM wich the ECU spat codes out for. But His idle problem still persists and i'm going to take a look at his Idle speed controller when i see him next, also Vacuum hose leaks are another posibilty but unlikely due to the randomness of the hunting idle appearing.
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Location:
Coffs Harbour
Registered:
October 2004
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Re: 02 Sensor?
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Tue, 12 October 2004 05:08
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hey dood yeh i adjusted it on the throttle body, here are a list of the symptons of my car
Running rich, can smell the petrol burning and oil while standing outside the car , also using lots of petrol and oil driving around town very bad fuel economy. 
Idle is hunting going up and down, usually after ive driven it 4 a while, when i start it cold its fine then after a while it goes up and down and nearly conks out. 
sometimes car wont kick over when its hot, so have to start it and rev it to start the car,
i checked the diognostics like u said but i couldnt find the TE1 my car didnt have it just a T1 i think it was, but yeh it just blinked over and over again.
wat do u suggest ? im goin to change the oil and all filters plus spark plugs do u think i should take it to mechanic 4 a full check up and tune up ?? thanks man or wat else do u suggest i do ??
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Location:
Coffs Harbour
Registered:
October 2004
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Re: 02 Sensor?
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Tue, 12 October 2004 08:06
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hey man since u seem to know a fair bit bout them, how many wires are the O2 sensors 4 or 1 ??
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Location:
tas
Registered:
June 2002
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Re: 02 Sensor?
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Tue, 12 October 2004 13:37
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well you have the exact same symptoms as my friends SX celica162. I sourced him a new AFM and o2 sensor and his fuel economy and power came back to how it should be, the hunting idle was still there, but that's not a big problem and i'll sort that out soon i hope (will work on his celica next saturday). So it's possible your AFM/o2 is bad even tho your ECU did not give you a code.
But it would not hurt to get some genaral maintenance done, spark plugs, air filter if it needs a new one, and especially get the igntion timing checked, make sure whoever does your timing knows how to do it on a EFI toyota. That involves shorting the diagnostic block so you can set the base timing properly, alot of mechanics don't know this simple fact and wonder why the timing goes all over the place. (i'll find out what pins to short if you need)
Yeah your 02 sensor would be a one wire type i beleive. 4 wire o2 sensors are heated type.
You could try disconnecting the o2 sensor plug and seeing if there is a noticable difference (smells more rich? grey smoke out the exuast, even worse fuel econemy:P etc). Even try disconnecting the AFM plug too see if it makes a difference, althou your car will probably stall without the AFM connected. If it makes a noticable difference, then the part you disconnected is probably working ok.
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Location:
tas
Registered:
June 2002
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Re: 02 Sensor?
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Tue, 12 October 2004 13:40
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oh another thing worth trying is resesting the ECU.
You can disconnect your car battery for a while, or remove the ECU fuse for 30+ seconds. Put it back in start the car up go for a drive and see if things improve.
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Location:
Helensvale, Queensland
Registered:
March 2003
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Re: 02 Sensor?
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Mon, 15 August 2005 13:42
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Hi guys, I just bought a ST162 with a 3SGE and a spare 3SFE that is blown that i am using for parts.
Is there a way i can test the o2 sensor and the afm to see if they are working correctly, because the car seems to run fine but it's not very fast, and i would like to know if swapping them with the parts on the blown engine might be a good idea.
I realise i could swap them over and see if it runs better, but i don't want to pull everything apart and swap them around only to find out that the ones there were working perfectly.
Thanks
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: 02 Sensor?
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Mon, 15 August 2005 13:59
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O2 is only for cruise conditions, to give better fuel economy
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