Hi folks

I recently cleaned the intake, got ngk plugs and wires, new water temp sensor, pcv valve and some other small things to improve the engine. But now it has a high idle at approx 1400 rpm.

I already passed the inspection with some weeks so im kind in a hurry and have had alot of work the last couple of weeks so thats great, NOT.

Well i took the trouble codes and found out that i have a engine code 28 and a trac code 47.

28 - Main oxygen sensor signal (on right bank)

47 - When idle switch is ON, sub-throttle position sensor signal is 1.45V or higher

My question is that does these two codes have anything to do with eachother?

I havent had these codes before and it should be a coincidence that the oxygen sensor stopped working after i cleaned the intake?

I was careful when cleaning the throttle but maybe i need to get it "calibrated" anyway? when it says sub-throttle it means the throttle far away from the intake right? not the throttle nearest the engine intake though i was thinking that this might should be calibrated to get the idle rpm down to normal.

I have found the diy for the throttle here but is it the same way to do the sub-throttle? http://www.lexls.com/tutorials/EFI/tps.html

I gues i also have to the oxygen diy here http://www.lexls.com/tutorials/EFI/m...gensensor.html

and when it says oxygen sensor (on right bank) they mean the one in the passenger side right?

Just need to make sure. Sorry my bad english

Thanks guys.

 

Have been looking for universal oxygen sensors but there is different types. Which one does Lexus use?

This one is Zircona. Can i use that? http://cgi.ebay.co.uk/Top-Quality-Ox...item3cb4c10b44

Quote: This sensor will not replace “Titania” or “Planar” type Sensors.

Thank you.

 

Hmm nobody knows anything about this? :-/