O2 Sensors
Thread Starter
Heel & Toe
Joined: Feb 2012
Posts: 16
Likes: 0
O2 Sensors
Hey guys, need some advice. I searched the threads for some info but came up with nothing. So point me in the right direction is I missed it on here some where.
My 99 vert has almost 95,000 miles on it and since I bought it at the 68,000 mark, I have now idea of the service history.... so...
I've decided to replace the O2 sensors. The pre-cat ones in the manifolds, ACDelco AFS75. Not going to worry with the post-cat sensors just yet since they only check to see if the cats are working. A shade tree mechanic told me I should heat the manifolds up before trying to remove the old ones to make it easier to get them out. Anoher guys says to just spray some PB blast on them and wait 30 minutes and take them off. I am not sure how bad they are going to be, but I am assuming nothing has been changed out on this car since "born on" day in Bowling Green. Could I get some input and advice on this DIY?
Thanks
Chris
My 99 vert has almost 95,000 miles on it and since I bought it at the 68,000 mark, I have now idea of the service history.... so...
I've decided to replace the O2 sensors. The pre-cat ones in the manifolds, ACDelco AFS75. Not going to worry with the post-cat sensors just yet since they only check to see if the cats are working. A shade tree mechanic told me I should heat the manifolds up before trying to remove the old ones to make it easier to get them out. Anoher guys says to just spray some PB blast on them and wait 30 minutes and take them off. I am not sure how bad they are going to be, but I am assuming nothing has been changed out on this car since "born on" day in Bowling Green. Could I get some input and advice on this DIY?
Thanks
Chris
Drifting
Joined: Feb 2010
Posts: 1,720
Likes: 38
From: Colorado
their location makes them a bitch, but there's nothing truly HARD about it, just tedious as hell.
if you're asking the way you are though, i'll assume you're where i was a few years ago: not dumb, but not a ton of hands on. along those lines, heres some good info to have..
http://forums.rennlist.com/rennforum...ating-oil.html
you can take ATF (auto tranny fluid) and acetone and make your own penetrating oil. and not for a chewing on grass hillbilly result, it actually works really well. just food for thought before you start.
also, there's an o2 sensor socket you can pick up for a few bucks at most parts stores. its just an open ended side-cart kind of looking socket so you can go around the wire and get to the o2's head.
http://www.google.com/products/catal...ed=0CD4Q8wIwAA
http://www.ecstuning.com/stage/image...0/600/4030.jpg
assuming those dont like being linked to, just google images "o2 socket" and you'll see what i mean.
get the above, and some neosporin
if you're asking the way you are though, i'll assume you're where i was a few years ago: not dumb, but not a ton of hands on. along those lines, heres some good info to have..
http://forums.rennlist.com/rennforum...ating-oil.html
you can take ATF (auto tranny fluid) and acetone and make your own penetrating oil. and not for a chewing on grass hillbilly result, it actually works really well. just food for thought before you start.
also, there's an o2 sensor socket you can pick up for a few bucks at most parts stores. its just an open ended side-cart kind of looking socket so you can go around the wire and get to the o2's head.
http://www.google.com/products/catal...ed=0CD4Q8wIwAA
http://www.ecstuning.com/stage/image...0/600/4030.jpg
assuming those dont like being linked to, just google images "o2 socket" and you'll see what i mean.
get the above, and some neosporin
Thread Starter
Heel & Toe
Joined: Feb 2012
Posts: 16
Likes: 0
You assume correctly. I am gaining experience through the "trial by fire" method. There have been times, such as the brake system rebuild, that I stop right in the middle and wonder WTF? 
I am not trained to do this kind of thing!!! But I push on and surprise myself.
Thanks for the great info. I'll mix up a batch of the ATF-Acetone 50/50, run and grab a 7/8ths O2 socket and get to it as soon as the parts arrive.
Funny how I seem to start a job with mechanics gloves on, but finish with greasy hands and scraped knuckles, wondering when I took my gloves off and where the hell I put them.
I am not trained to do this kind of thing!!! But I push on and surprise myself.Thanks for the great info. I'll mix up a batch of the ATF-Acetone 50/50, run and grab a 7/8ths O2 socket and get to it as soon as the parts arrive.
Funny how I seem to start a job with mechanics gloves on, but finish with greasy hands and scraped knuckles, wondering when I took my gloves off and where the hell I put them.
Drifting
Joined: Feb 2010
Posts: 1,720
Likes: 38
From: Colorado
haha, yea, i did that to the point that i just gave up on gloves.
a few years ago i just decided "you know what.. im gonna do this." and NOW i know that my valvesprings were needing replaced, or a valve seal was leaky. back then, i had no idea. just knew the motor was high mileage.
so i thought "ok. lets swap it!" I started with a few wrenches, a little non-oil air compressor, etc. Just bought tools as I went. a LOT of tools later, and a new air compressor, i had the new motor and tranny in, and it did what i dreaded: didnt crank.
i called my buddy, a mechanic, and he drove 5 hours in his gas guzzling truck to meet me. i had the return and sending fuel lines swapped, that was it
a few years ago i just decided "you know what.. im gonna do this." and NOW i know that my valvesprings were needing replaced, or a valve seal was leaky. back then, i had no idea. just knew the motor was high mileage.
so i thought "ok. lets swap it!" I started with a few wrenches, a little non-oil air compressor, etc. Just bought tools as I went. a LOT of tools later, and a new air compressor, i had the new motor and tranny in, and it did what i dreaded: didnt crank.
i called my buddy, a mechanic, and he drove 5 hours in his gas guzzling truck to meet me. i had the return and sending fuel lines swapped, that was it
Thread Starter
Heel & Toe
Joined: Feb 2012
Posts: 16
Likes: 0
The real kick in the pants is that we are doing this to the corvette. Never tried it with the countless other vehicles we have owned, but to our corvette. This is my dream car, wanted one for twenty years, and I am trusting myself to tear it apart and do the work on it. Blows my freakin mind sometimes.
