Ive never changed my O2 sensors.
10-09-2003, 09:44 PM
#1
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Thread Starter
Join Date: May 2001
Location: Berne, Indiana, USA
Posts: 545
Ive never changed my O2 sensors.
My car has 78,000 miles on it and as far as i know...the 02s are original. Could this by why my car is running rich? I had my car programmed but i wonder if my possible bad sensors are making my program not work to its full potential.....My car smells horrible rich but runs great still........any input???????
10-09-2003, 09:50 PM
#4
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Join Date: Nov 2002
Posts: 1,074
whats ur mileage? i get 200 a tank, and ppl told me its the o2s (front header ones) for sure, so i ordered me a pair from rockauto.com for 36 bux each (oem replacement, i dont recc bosch)
ur o2s (front again) setup ur a/f ratio, so most likely, u are running rich, because of bad o2s...
ur o2s (front again) setup ur a/f ratio, so most likely, u are running rich, because of bad o2s...
10-09-2003, 09:58 PM
#6
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Join Date: Mar 2002
Location: Clio,MI. USA
Posts: 71
I think O2 are supposed to be done every 30,000 miles or maybe it's 50,000. Any way it should be changed when the book says so. 200 miles/tank !!! I get around 300/tank or more if I take it easy. And yep a lot of people say don't go with bosch (including a freind of mine who works there) but that's what I bought anyway. No problem. My mileage went up and the car stopped runniny pig rich.
10-09-2003, 10:03 PM
#7
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Join Date: Nov 2002
Posts: 1,074
Originally posted by JONEZ_Z
Thats what im wondering......Hate to spend 100.00 for " Just in case"
Thats what im wondering......Hate to spend 100.00 for " Just in case"
trust me, if youre running rich, and there is nothing you can do to fix it, o2s are kinda it... also it'll make ur car run really well...
i know from RC cars that if you get ur car to run rich, u'll loose mph from topspeed
treat your car right, and she'll treat you right
10-09-2003, 10:06 PM
#10
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Join Date: Nov 2002
Posts: 1,074
its not a rumor, but just what i hear from ppl that use it...
bosch was the 1st company that made effective o2 sensors i think, yet they're the only ones who cant get it right...
they have some expensive ones that are good, but i'm talking 100+ each (something i cant afford...)
oem replacements are real good...
bosch was the 1st company that made effective o2 sensors i think, yet they're the only ones who cant get it right...
they have some expensive ones that are good, but i'm talking 100+ each (something i cant afford...)
oem replacements are real good...
10-09-2003, 11:05 PM
#14
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Join Date: Dec 1969
Location: Little Rock, AR
Posts: 27,714
Originally posted by SiDeWaYZz28
how do you know when u need new o2 i have 84000 and i never changed mine
how do you know when u need new o2 i have 84000 and i never changed mine
10-09-2003, 11:25 PM
#15
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Join Date: Jun 2002
Location: Austin, TX
Posts: 703
I just went out to www.RockAuto.com and found AC Delco part #AFS75 for $36.89. Can this sensor be used in all 4 locations?
Some of the sensors listed on that site state "upstream sensor" and sopme state "downstream sensor", but the AFS75 doesn't say either.
Also, if only the front sensors are used to calculate the A/F ratio, what are the rears used for?
Thomas.
Some of the sensors listed on that site state "upstream sensor" and sopme state "downstream sensor", but the AFS75 doesn't say either.
Also, if only the front sensors are used to calculate the A/F ratio, what are the rears used for?
Thomas.