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post #1 of (permalink) Old 08-29-2001, 08:52 AM
72dreamer
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Oxy Sensors

i understand i have 2 oxy sensors to replace, right? has anyone done this or is this something the dealer has to change out?
where are they located and should i go with the oem product?
thanks you fine folks!


Marriage is like a skin graft, it may or may not take.
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post #2 of (permalink) Old 08-29-2001, 09:03 AM
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Re: Oxy Sensors

On what year truck? If it's a pre-96, it'll have either one or two. 96-up it'll have three.

They are extremely easy to replace. It's like a spark plug threaded into the exhaust pipe, with a wire sticking out the end. Just unplug it, then either use a 3/4" wrench or the special 'oxygen sensor removal' socket that Sears and a bunch of other places sell. It's in the exhaust though...so expect it to be slightly rusty. Put some anti-seize on the new one, tighten it down, and reconnect the wire...and you're done. Pretty simple.

post #3 of (permalink) Old 08-29-2001, 09:10 AM
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Re: Oxy Sensors

oh yes....you'll have a few if its post '96....

you'll either have a singled-wired O2, or a 4-wired O2..... '94 and newer, it'll be 4-wired(heated O2) sensor. the price difference between the two are significant. if you unfortunately have the heated O2, you're looking $40-$60 each [img]/wwwthreads_images/icons/frown.gif[/img]

you can get them at the dealer or at autozone or somewhere like that. Bosch makes a good replacement sensor.

before you try to undo the nut, warm up the exhaust a little bit by running the truck. then spray the wd40...uh, i guess watch out for flames [img]/wwwthreads_images/icons/crazy.gif[/img] [img]/wwwthreads_images/icons/laugh.gif[/img]

<font color=blue>Shorts</font color=blue>

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post #4 of (permalink) Old 08-29-2001, 10:15 AM
72dreamer
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Re: Oxy Sensors

yeah, it's a '98. so i'm looking at needing 3 of em? at $40 -$60 bucks a piece? man that's a mud tire! i had plan to get a service manual prior to doing this.
i guess autozone can tell me the quantity and correct part numbers. hopefully.
and at how many miles should they be replaced?


Marriage is like a skin graft, it may or may not take.
post #5 of (permalink) Old 08-29-2001, 10:25 AM
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Re: Oxy Sensors

It's not so much how many miles are on it...usually the computer will tell you when it's time for some new ones. As a general guideline though, I like to replace the two closest to the motor every 100k miles or so. If your truck is tuned right they can last forever. And you shouldn't ever have to replace the rearmost one.

Good luck!


post #6 of (permalink) Old 08-29-2001, 11:24 AM
72dreamer
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Re: Oxy Sensors

hey thanks y'all for the info. i guess i'll just get two of em. gives me something to do for memorial day.
i also have to wash and polish/wax the truck. seems someone out there is a little envious and decided to key my beautiful ebony queen of a truck from one end to the other. it's noticeable since it's black. couldn't of been someone i know since i moved to a new town. oh well, they could've done worse. thanks again!


Marriage is like a skin graft, it may or may not take.
post #7 of (permalink) Old 08-29-2001, 12:32 PM
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Re: Oxy Sensors

oh man...that's crappy that your truck got keyed [img]/wwwthreads_images/icons/frown.gif[/img] [img]/wwwthreads_images/icons/mad.gif[/img]

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post #8 of (permalink) Old 08-29-2001, 12:38 PM
72dreamer
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Re: Oxy Sensors

tell me about it. but i've seen a black polish at wally world and i'll see how good that removes. i might have to go over it twice. we'll see.


Marriage is like a skin graft, it may or may not take.
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