Jellybean Posted March 16, 2011 Share Posted March 16, 2011 thats what i like to hear looking on the site it says the cable is nearly a metre long, where does it plug into? Follow the cable all will be revealed, the hard part is unbolting the sensor, its tight in there Quote Link to comment Share on other sites More sharing options...
black_widow87 Posted March 16, 2011 Share Posted March 16, 2011 Will the stock TT sensor fit an aftermarket downpipe? I need one pretty urgently. Quote Link to comment Share on other sites More sharing options...
Guest suprasteve k Posted March 17, 2011 Share Posted March 17, 2011 Ordered my o2 sensor last night, got email from sparkplugs.co.uk this morning they are out of stock, they are on back order from the uk warehouse which is closed this week they are expecting the order on the 23rd. Thanks to jellybean & TTricheh and others for their input. Quote Link to comment Share on other sites More sharing options...
jackso11 Posted March 17, 2011 Share Posted March 17, 2011 I soaked my nuts with WD40 Sounds like it might sting Quote Link to comment Share on other sites More sharing options...
Paul372 Posted March 18, 2011 Share Posted March 18, 2011 Ordered my o2 sensor last night, got email from sparkplugs.co.uk this morning they are out of stock, they are on back order from the uk warehouse which is closed this week they are expecting the order on the 23rd. Thanks to jellybean & TTricheh and others for their input. That's the same email i got from sparkplugs.co.uk Quote Link to comment Share on other sites More sharing options...
Jellybean Posted March 18, 2011 Share Posted March 18, 2011 I got that email as well, took 6-7 days for it to reach Ireland Quote Link to comment Share on other sites More sharing options...
Parry_10 Posted March 18, 2011 Author Share Posted March 18, 2011 I also got an email like that and it came the next day.. just fitted it today so hopefully my fuel economy will improve now Quote Link to comment Share on other sites More sharing options...
robin Posted March 18, 2011 Share Posted March 18, 2011 So why do UK and NA cars have two sensors? Is the second purely to calculate how well the CAT is working or are both used by the ECU? Quote Link to comment Share on other sites More sharing options...
Jellybean Posted March 19, 2011 Share Posted March 19, 2011 As far as I know it is Down to stricter emissions regulations in the uk compared to japan so they used a different setup on uk cars to meet the regulations Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted March 19, 2011 Share Posted March 19, 2011 (edited) So why do UK and NA cars have two sensors? Is the second purely to calculate how well the CAT is working or are both used by the ECU? Edit, just been corrected by CW, the N/A has two sensors that are both of which are used for idle/closed loop control, didn't realise they had a split manifold, doh! The second O2 sensor on the UK TT because it is situated after/between the two cats has a slower response rate, IE as the ECU adjusts the fueling at idle and closed loop in response to the first O2 sensors output, the second has a delayed/slower reaction, so the ECU is set to read this, so once this delay is beyond pre set spec, the ECU will throw a CEL which will basically mean that the sensor or the cat is bad, Its not used as a basis for fuel adjustment, like the first sensor. Just a more expensive way of monitoring cat condition than the JDM TT temp sensor, i suspect the if the code was cleared, you could run without the second sensor, but haven't tried. Edited March 19, 2011 by Tricky-Ricky (see edit history) Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted March 19, 2011 Share Posted March 19, 2011 The N/A has two sensors before the cats, and monitor three cylinders each, individually, as the sensors are before the confluence of the pipes. Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted March 19, 2011 Share Posted March 19, 2011 (edited) The N/A has two sensors before the cats, and monitor three cylinders each, individually, as the sensors are before the confluence of the pipes. Really! shows how much i know about the N/A LOL! I'll adjust my last post:slapped: Edit: That very weird, i have just had a look through through the 2JZ GE section of the manual, and as well as not being able to locate the O2 sensor input pins on the ECU, i couldn't find a checking procedure! Very odd can you throw more light on that Chris? Edited March 19, 2011 by Tricky-Ricky (see edit history) Quote Link to comment Share on other sites More sharing options...
Jellybean Posted March 19, 2011 Share Posted March 19, 2011 who else broke the clip on the loom Quote Link to comment Share on other sites More sharing options...
robin Posted March 20, 2011 Share Posted March 20, 2011 It's interesting how the ECU can monitor both sensors and determine the health of the cat/or sensors. Curiously on mine I have no error light despite both sensors being on for well over thier estimated life span(100k+), I guess if both sensors deteriate at the same rate then the ecu will only see lean? It can only know theres a problem if only one of the sensors has failed? Quote Link to comment Share on other sites More sharing options...
Nic Posted March 20, 2011 Share Posted March 20, 2011 It's interesting how the ECU can monitor both sensors and determine the health of the cat/or sensors. Curiously on mine I have no error light despite both sensors being on for well over thier estimated life span(100k+), I guess if both sensors deteriate at the same rate then the ecu will only see lean? It can only know theres a problem if only one of the sensors has failed? You don't get a warning light when the oxygen sensors are worn out, the ECU just defaults to a rich map resulting in a loss in power and poor fuel economy. Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted March 20, 2011 Share Posted March 20, 2011 It's interesting how the ECU can monitor both sensors and determine the health of the cat/or sensors. Curiously on mine I have no error light despite both sensors being on for well over thier estimated life span(100k+), I guess if both sensors deteriate at the same rate then the ecu will only see lean? It can only know theres a problem if only one of the sensors has failed? So far as I'm aware the N/A ECU runs the injectors in sequential mode, and in that case i would guess that the two O2 sensors output is averaged, so in theory if one sensor went down the ECU should be able to detect and throw a CEL, just as if they both failed or became sluggish. And if they are both before the cat then there would be no indication of the cat condition. Quote Link to comment Share on other sites More sharing options...
Paul372 Posted March 25, 2011 Share Posted March 25, 2011 I've just received this email from sparkplugs.co.uk still no o2 sensor looks like i will have to wait longer :-( Hello Sir, I am afraid that Denso have just informed us that they misinformed us and do not have DOX-0228 in stock, it is on back order and as such should be in stock towards the end of next week. I am so sorry for the extended delay, I hope it does not cause any inconvenience. Kind regards, Rebecca Dolan Quote Link to comment Share on other sites More sharing options...
Jellybean Posted March 25, 2011 Share Posted March 25, 2011 They are probably trying to figure out why the demand is so high Quote Link to comment Share on other sites More sharing options...
black_widow87 Posted March 25, 2011 Share Posted March 25, 2011 I've just received this email from sparkplugs.co.uk still no o2 sensor looks like i will have to wait longer :-( Hello Sir, I am afraid that Denso have just informed us that they misinformed us and do not have DOX-0228 in stock, it is on back order and as such should be in stock towards the end of next week. I am so sorry for the extended delay, I hope it does not cause any inconvenience. Kind regards, Rebecca Dolan Exact same message i got. If its not here by the end of next week.... Quote Link to comment Share on other sites More sharing options...
Lude Posted March 26, 2011 Share Posted March 26, 2011 when do you know you need a new one? or shall i just get a new one as they are only cheap? Quote Link to comment Share on other sites More sharing options...
Nic Posted March 27, 2011 Share Posted March 27, 2011 when do you know you need a new one? or shall i just get a new one as they are only cheap? You can test with a volt meter, it explains the process in HERE. Or if it hasn't been changed in the last 30K miles or you're getting poor mpg then it probably needs changing. I would only fit a genuine OEM Toyota oxygen sensor personally. Quote Link to comment Share on other sites More sharing options...
Parsons76 Posted March 27, 2011 Share Posted March 27, 2011 I can get genuine sensors for around £110 + vat. Any one needs one just pm me with what you want. Quote Link to comment Share on other sites More sharing options...
p3te Posted March 28, 2011 Share Posted March 28, 2011 To the lads thats fitted the denso o2 sensors recently, hows your cars running any noticable improvement in mpg or how its running? Quote Link to comment Share on other sites More sharing options...
robin Posted March 28, 2011 Share Posted March 28, 2011 Just checked the voltage on both ox1 and ox2 and they are both between 0-0.2v so it looks like they need replacing. Any ideas which denso sensors are the right ones for a UK car? Quote Link to comment Share on other sites More sharing options...
robin Posted March 28, 2011 Share Posted March 28, 2011 not to worry, just noticed the info earlier on in the thread, ignore me. Quote Link to comment Share on other sites More sharing options...
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