Friendly tidbit of info regarding O2 sensors
11-14-08, 11:51 AM
#1
Friendly tidbit of info regarding O2 sensors
I highly recommend sparkplugs.com (that Gsoup referred me to). I just bought all four O2 sensors for my GS400 for $279! They are all OEM Denso sensors with the connectors...exactly how it came from the factory.
Do not pay $225+ for EACH O2 sensor if yours goes bad. It always pays to shop around; GL!
Do not pay $225+ for EACH O2 sensor if yours goes bad. It always pays to shop around; GL!
11-14-08, 01:02 PM
#3
...well sometimes if they are real bad as in dead (not working at all) you will get a check engine light (CEL). If they are worn and old (high miles) you will get terrible gas mileage and if they are in there for a long time while being bad they could ruin your cats.
11-14-08, 01:28 PM
#4
The ECU is pretty sensitve when it comes to O2 sensors. They have stricter tolerance than older toyotas. hell my dad has a Toyota camry that drove on 2 dead O2 sensors without even lighting up a CEL. Chances are, if your CEL is not on, then the O2 sensors are probably still good. Many shops carry a diagnostic tool (Dealer carrys Toyota Techstream) that will monitor the sensor reading.
03-07-11, 09:25 AM
#5
just bumping this before i buy these....i swear there was a recent thread with the part #'s of the replacements but i cant find them now
im gonna replace my 02 sensors when i do my headers and this is all they list for the 2001 gs430 on sparkplugs.com
SuperClass OE identical O2 sensor 234-4138 Front Left $71.51 (im assuming to be bank 1 sensor 1)
SuperClass OE identical O2 sensor 234-4630 Front Right $79.26 (im assuming to be bank 2 sensor 1)
SuperClass OE identical O2 sensor 234-4623 Rear $78.15
so.....are BOTH the rears gonna use the same part #? which im assuming would be the bank 1/bank 2 sensor 2 right?
im gonna replace my 02 sensors when i do my headers and this is all they list for the 2001 gs430 on sparkplugs.com
SuperClass OE identical O2 sensor 234-4138 Front Left $71.51 (im assuming to be bank 1 sensor 1)
SuperClass OE identical O2 sensor 234-4630 Front Right $79.26 (im assuming to be bank 2 sensor 1)
SuperClass OE identical O2 sensor 234-4623 Rear $78.15
so.....are BOTH the rears gonna use the same part #? which im assuming would be the bank 1/bank 2 sensor 2 right?
03-07-11, 10:35 AM
#7
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just bumping this before i buy these....i swear there was a recent thread with the part #'s of the replacements but i cant find them now
im gonna replace my 02 sensors when i do my headers and this is all they list for the 2001 gs430 on sparkplugs.com
SuperClass OE identical O2 sensor 234-4138 Front Left $71.51 (im assuming to be bank 1 sensor 1)
SuperClass OE identical O2 sensor 234-4630 Front Right $79.26 (im assuming to be bank 2 sensor 1)
SuperClass OE identical O2 sensor 234-4623 Rear $78.15
so.....are BOTH the rears gonna use the same part #? which im assuming would be the bank 1/bank 2 sensor 2 right?
im gonna replace my 02 sensors when i do my headers and this is all they list for the 2001 gs430 on sparkplugs.com
SuperClass OE identical O2 sensor 234-4138 Front Left $71.51 (im assuming to be bank 1 sensor 1)
SuperClass OE identical O2 sensor 234-4630 Front Right $79.26 (im assuming to be bank 2 sensor 1)
SuperClass OE identical O2 sensor 234-4623 Rear $78.15
so.....are BOTH the rears gonna use the same part #? which im assuming would be the bank 1/bank 2 sensor 2 right?
I believe you are right Brian, bank 1's should be the same and bank 2 is downstream sensor which should be the same for any downstream on your car..
pretty good prices there, I ended up going to Advance auto which carries Bosch for $95, i've read never to use anything bosch on Toyota/Lex's for for $100 they had me a oem denso by the next day..
----
to anyone buying them definetly make sure you get the tru fit ones by that i mean non universal, that way it will be plug and play and save you alot of headache!
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03-07-11, 12:09 PM
#9
I believe you are right Brian, bank 1's should be the same and bank 2 is downstream sensor which should be the same for any downstream on your car..
pretty good prices there, I ended up going to Advance auto which carries Bosch for $95, i've read never to use anything bosch on Toyota/Lex's for for $100 they had me a oem denso by the next day..
----
to anyone buying them definetly make sure you get the tru fit ones by that i mean non universal, that way it will be plug and play and save you alot of headache!
pretty good prices there, I ended up going to Advance auto which carries Bosch for $95, i've read never to use anything bosch on Toyota/Lex's for for $100 they had me a oem denso by the next day..
----
to anyone buying them definetly make sure you get the tru fit ones by that i mean non universal, that way it will be plug and play and save you alot of headache!
BTW these are DENSO's WITH OEM plugs NOT BOSCH
Last edited by sakataj; 03-07-11 at 12:12 PM.
03-07-11, 02:14 PM
#10
wait wait....what i was asking is bank 1 sensor 2 and bank 2 sensor 2 the same ones? according to the part #'s from my earlier post thats what they were showing but i thought they were different.
BTW these are DENSO's WITH OEM plugs NOT BOSCH
yeah im gonna change all 4 of mine for this price when i do my headers
BTW these are DENSO's WITH OEM plugs NOT BOSCH
yeah im gonna change all 4 of mine for this price when i do my headers
03-08-11, 04:27 AM
#12
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Brian those should be different..
both of your upstream 02 sensors "Bank 1" should be the same
and your Bank 2 sensors (downstream) should both be the same..
if you want to double verify, "Debonair" might a good person to ask, i read lots of helpful stuff in a few of his posts regarding 02 sensors
both of your upstream 02 sensors "Bank 1" should be the same
and your Bank 2 sensors (downstream) should both be the same..
if you want to double verify, "Debonair" might a good person to ask, i read lots of helpful stuff in a few of his posts regarding 02 sensors
Last edited by aka paco; 03-08-11 at 04:30 AM.
03-08-11, 04:35 AM
#13
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Brian those should be different..
both your upstream sensors should be the same, and your downstreams should be the same..
From what i've read when doing mine "Bank1 = Upstream" "Bank2 = downstream"
I just replaced my bank 2 sensor 2 with the oem Denso downstream sensor a few weeks ago..
both your upstream sensors should be the same, and your downstreams should be the same..
From what i've read when doing mine "Bank1 = Upstream" "Bank2 = downstream"
I just replaced my bank 2 sensor 2 with the oem Denso downstream sensor a few weeks ago..
03-08-11, 05:53 AM
#14
Brian those should be different..
both of your upstream 02 sensors "Bank 1" should be the same
and your Bank 2 sensors (downstream) should both be the same..
if you want to double verify, "Debonair" might a good person to ask, i read lots of helpful stuff in a few of his posts regarding 02 sensors
both of your upstream 02 sensors "Bank 1" should be the same
and your Bank 2 sensors (downstream) should both be the same..
if you want to double verify, "Debonair" might a good person to ask, i read lots of helpful stuff in a few of his posts regarding 02 sensors
03-08-11, 07:40 AM
#15
Brian those should be different..
both of your upstream 02 sensors "Bank 1" should be the same
and your Bank 2 sensors (downstream) should both be the same..
if you want to double verify, "Debonair" might a good person to ask, i read lots of helpful stuff in a few of his posts regarding 02 sensors
both of your upstream 02 sensors "Bank 1" should be the same
and your Bank 2 sensors (downstream) should both be the same..
if you want to double verify, "Debonair" might a good person to ask, i read lots of helpful stuff in a few of his posts regarding 02 sensors
according to them
# 234-4138 Front Left
# 234-4630 Front Right
# 234-4623 Rear
http://www.densoproducts.com/results...ctCategoryID=2
so you'll are saying is my bank 1 sensor 1 and bank 2 sensor 1 should be the same and my bank 1 sensor 2 and bank 2 sensor 2 should be the same?
Last edited by sakataj; 03-08-11 at 07:48 AM.