My secondary O2 sensor is just dangling with the wires attached and I have no idea where they can be soldered back on. That's if they still can be please let me know. If i need to buy a new one just let me know thanks!

 

wow I bet that triggered a CEL on the dash!
No way you can solder these micro fine wires and still expect it to work
Spend the 50 bucks, get DENSO brand, that's the OE supplier, makes it total plug and play

Note- You need to reset the ECU after replacement of part,
easy method: open passenger front door to see plastic panel on end of dash (some years on kick panel) That's the cover to the fuse box

remove the 7.5 amp fuse marked CLOCK for 1 minute then insert fully and close cover
Its the secret backup for the ecu and clears all codes- forces a full system self test,,, and no need to enter radio security codes!

 

I learned that when you pull the clock fuse (#13, passenger fuse box) or d/c the battery you MUST do the idle relearn procedure:

1) Turn off all accessories (a/c, radio, lights, etc)
2) Start the car and hold RPM at 3000 (in park or neutral) until the radiator fan comes on (coolant up to temp)
3) Allow to idle for 5 minutes. Note that if the radiator fan comes on during the 5 minute idle, you'll need to pause your stopwatch. It needs to be 5 minutes without the fan running.

 

Changed both in my car.

Primary
DENSO 234-4727, $43 on ebay (no tax, free shipping)
http://www.ebay.com/itm/DENSO-234-4727-Oxygen-Sensor-/181654970200?hash=item2a4b7adf58&vxp=mtr
Secondary
DENSO 234-4621, $24 on ebay (no tax, free shipping)
http://www.ebay.com/itm/DENSO-234-4621-Oxygen-Sensor-/251252588918?hash=item3a7fd24176&vxp=mtr
You will need a 7/8" open end wrench and some penetrating oil to make them loose. easy to do.

 

Not all years require the idle relearn procedure,,not sure if that started with 02, or 03
Quick - who has an owner book?

 

I have for 2001 TL.

http://www.filedropper.com/acuratl2001ownersmanual

 

2001 TL service manual does not say anything about the idle relearn procedure.

 

I know that as I drive an 01.
The point was to find an 02 or 03 ziner who can confirm which year this procedure became needed