| Author |
Message |
Stormin Mormon
Guest
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 Posted:
Mon Dec 05, 2005 8:08 am Post subject:
Oxygen sensor replacement |
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I've been driving my 89 Chevy S=10 Blazer without knowing they need an
oxygen sensor every couple thousand miles. Ah, well.
4.3 engine. I finally found the sensor on the passenger side of the engine,
between spark plugs 2 and 4. Truck was bought about 120,000 miles and
presently has 265,000 miles. Might be time for a replacement sensor.
Question: Is it better to change the sensor on a cold engine, or on a hot
engine? And any practical tips from someone has done one?
--
Christopher A. Young
Do good work.
It's longer in the short run
but shorter in the long run.
..
..
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Rich B
Guest
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| Posted:
Mon Dec 05, 2005 9:16 am Post subject:
Re: Oxygen sensor replacement |
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| Quote: | Group: alt.autos.gm Date: Mon, Dec 5, 2005,
2:08am (EST+5) From:
cayoung61-#spamblock*-@hotmail.com
(Stormin Mormon)
I've been driving my 89 Chevy S=10 Blazer
without knowing they need an oxygen sensor
every couple thousand miles. Ah, well.
4.3 engine. I finally found the sensor on the
passenger side of the engine, between spark
plugs 2 and 4. Truck was bought about
120,000 miles and presently has 265,000
miles. Might be time for a replacement sensor.
Question: Is it better to change the sensor on
a cold engine, or on a hot
engine? And any practical tips from someone
has done one?
--
Christopher A. Young
Do good work.
It's longer in the short run
but shorter in the long run.
First, the sensor doesn't need changed every couple of thousand miles |
but should be changed at about 50,000 or 75,000 miles. Do it on a cold
engine because it's much kinder to your hands and arms (no burns). The
threads on the sensor are already coated wirh anti-seize so just remove
the old one and install the new one. Also, DO NOT overtighten the
sensor (if you do, you may strip the threads in the manifold or exhaust
pipe).
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
There are two classes of pedestrians in these days of reckless motor
traffic - the quick and the dead.
~ Lord Dewar 1933 ~
Climbing into a hot car is like buckling on a pistol. It is the great
equalizer. ~ Henry G. Felsen 1964 ~ |
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Stormin Mormon
Guest
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| Posted:
Mon Dec 05, 2005 7:29 pm Post subject:
Re: Oxygen sensor replacement |
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Any clue where the oxy sensor is? I thought I found it on the side of the
motor between spark plulgs 2 and 4, but that's more likely a coolant sensor.
I've looked all up and down, and can't find the silly thing.
The problem is that the truck has 265,000 miles on it (4.3 engine) and runs
rough and stalls at idle when cold. Maybe I should give more information?
--
Christopher A. Young
Do good work.
It's longer in the short run
but shorter in the long run.
..
..
"Rich B" <AutoHobbyist@webtv.net> wrote in message
news:1532-4393C95C-1870@storefull-3216.bay.webtv.net...
First, the sensor doesn't need changed every couple of thousand miles
but should be changed at about 50,000 or 75,000 miles. Do it on a cold
engine because it's much kinder to your hands and arms (no burns). The
threads on the sensor are already coated wirh anti-seize so just remove
the old one and install the new one. Also, DO NOT overtighten the
sensor (if you do, you may strip the threads in the manifold or exhaust
pipe).
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Rich B
Guest
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| Posted:
Mon Dec 05, 2005 8:05 pm Post subject:
Re: Oxygen sensor replacement |
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| Quote: | Group: alt.autos.gm Date: Mon, Dec 5, 2005,
1:29pm (EST+5) From:
cayoung61-#spamblock*-@hotmail.com
(Stormin Mormon)
Any clue where the oxy sensor is? I thought I
found it on the side of the motor between
spark plulgs 2 and 4, but that's more likely a
coolant sensor. I've looked all up and down,
and can't find the silly thing.
The problem is that the truck has 265,000
miles on it (4.3 engine) and runs rough and
stalls at idle when cold. Maybe I should give
more information?
--
Christopher A. Young
Do good work.
It's longer in the short run
but shorter in the long run.
It will be installed somewhere on the exhaust, usually near where the |
exhaust pipe connects to the manifold. Try looking on the driver's
side but your vehicle may have it on either the driver's side, passenger
side or both (some vehicles / engines use two O2 sensors). I'm not
certain about the number of sensors or exact location but you'll
probably find it easier and quicker if you look from underneath the
vehicle. Just follow the exhaust up to the engine and it's gonna be on
there somewhere.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
There are two classes of pedestrians in these days of reckless motor
traffic - the quick and the dead.
~ Lord Dewar 1933 ~
Climbing into a hot car is like buckling on a pistol. It is the great
equalizer. ~ Henry G. Felsen 1964 ~ |
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Steve Mackie
Guest
|
| Posted:
Mon Dec 05, 2005 8:09 pm Post subject:
Re: Oxygen sensor replacement |
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I would actually do it on a 'slightly warm' engine, or use a torch to heat
the area of the sensor. Doing it stone cold could damage the threads.
On this vehicle the sensor is located in the exhaust pipe beside the
transmission.
Steve
| Quote: | Any clue where the oxy sensor is? I thought I found it on the side of the
motor between spark plulgs 2 and 4, but that's more likely a coolant
sensor.
I've looked all up and down, and can't find the silly thing.
The problem is that the truck has 265,000 miles on it (4.3 engine) and
runs
rough and stalls at idle when cold. Maybe I should give more information?
First, the sensor doesn't need changed every couple of thousand miles
but should be changed at about 50,000 or 75,000 miles. Do it on a cold
engine because it's much kinder to your hands and arms (no burns). The
threads on the sensor are already coated wirh anti-seize so just remove
the old one and install the new one. Also, DO NOT overtighten the
sensor (if you do, you may strip the threads in the manifold or exhaust
pipe). |
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aarcuda69062
Guest
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| Posted:
Mon Dec 05, 2005 9:33 pm Post subject:
Re: Oxygen sensor replacement |
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In article <QgXkf.57302$DL6.29928@twister.nyroc.rr.com>,
"Stormin Mormon" <cayoung61-#spamblock*-@hotmail.com> wrote:
| Quote: | The problem is that the truck has 265,000 miles on it (4.3 engine) and runs
rough and stalls at idle when cold. Maybe I should give more information?
^^^^^^^^ |
Odds are it's not the oxygen sensor. |
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batty54
Guest
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| Posted:
Tue Dec 06, 2005 1:22 am Post subject:
Re: Oxygen sensor replacement |
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|
You might want to check your EGR valve, that sounds more like your problem
than O2 sensor at least that's what mine was doing.
"Stormin Mormon" <cayoung61-#spamblock*-@hotmail.com> wrote in message
news:yiNkf.55558$DL6.24912@twister.nyroc.rr.com...
| Quote: | I've been driving my 89 Chevy S=10 Blazer without knowing they need an
oxygen sensor every couple thousand miles. Ah, well.
4.3 engine. I finally found the sensor on the passenger side of the
engine,
between spark plugs 2 and 4. Truck was bought about 120,000 miles and
presently has 265,000 miles. Might be time for a replacement sensor.
Question: Is it better to change the sensor on a cold engine, or on a hot
engine? And any practical tips from someone has done one?
--
Christopher A. Young
Do good work.
It's longer in the short run
but shorter in the long run.
.
.
|
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|
| Back to top |
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Stormin Mormon
Guest
|
| Posted:
Tue Dec 06, 2005 8:06 am Post subject:
Re: Oxygen sensor replacement |
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Another online mechanic suggested EGR. Are they a total pain to change out?
What's the process t here for changing one?
--
Christopher A. Young
Do good work.
It's longer in the short run
but shorter in the long run.
..
..
"batty54" <batty_54@yahoo.com> wrote in message
news:43949390$1@news-1.oit.umass.edu...
You might want to check your EGR valve, that sounds more like your problem
than O2 sensor at least that's what mine was doing.
"Stormin Mormon" <cayoung61-#spamblock*-@hotmail.com> wrote in message
news:yiNkf.55558$DL6.24912@twister.nyroc.rr.com...
| Quote: | I've been driving my 89 Chevy S=10 Blazer without knowing they need an
oxygen sensor every couple thousand miles. Ah, well.
4.3 engine. I finally found the sensor on the passenger side of the
engine,
between spark plugs 2 and 4. Truck was bought about 120,000 miles and
presently has 265,000 miles. Might be time for a replacement sensor.
Question: Is it better to change the sensor on a cold engine, or on a hot
engine? And any practical tips from someone has done one?
--
Christopher A. Young
Do good work.
It's longer in the short run
but shorter in the long run.
.
.
|
|
|
| Back to top |
|
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Stormin Mormon
Guest
|
| Posted:
Wed Dec 07, 2005 4:48 am Post subject:
Re: Oxygen sensor replacement |
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|
I looked, and a fellow from the auto parts place looked. The 89 is a
transition year. Throttle port injection, so it's neither up (carb) nor down
(cylidner injection).
The Haynes book said that under "runs rough at cold idle" to look for vacuum
leaks, tighten down the sorta-carb and then PCV valve. And maybe EGR. I got
the PCV at the auto parts today $2.99, and the parts guy showed me the EGR,
which is not as much a PIA as a steering pump. Or an alternator bracket.
Done both of those this year.
Hint: If you neglect to replace the small half inch long bolt on the back of
your alternator, you will spend four hours or so replacing the broken
alternator bracket. Yes, I know the Dodges you have worked on all your life
don't have a back bolt. But Chevys do. DAMHIKT.
Thanks ever so much for the wisdom.
--
Christopher A. Young
Do good work.
It's longer in the short run
but shorter in the long run.
..
..
"Rich B" <AutoHobbyist@webtv.net> wrote in message
news:21183-43944914-1652@storefull-3215.bay.webtv.net...
| Quote: | Group: alt.autos.gm Date: Mon, Dec 5, 2005,
1:29pm (EST+5) From:
cayoung61-#spamblock*-@hotmail.com
(Stormin Mormon)
Any clue where the oxy sensor is? I thought I
found it on the side of the motor between
spark plulgs 2 and 4, but that's more likely a
coolant sensor. I've looked all up and down,
and can't find the silly thing.
The problem is that the truck has 265,000
miles on it (4.3 engine) and runs rough and
stalls at idle when cold. Maybe I should give
more information?
--
Christopher A. Young
Do good work.
It's longer in the short run
but shorter in the long run.
It will be installed somewhere on the exhaust, usually near where the |
exhaust pipe connects to the manifold. Try looking on the driver's
side but your vehicle may have it on either the driver's side, passenger
side or both (some vehicles / engines use two O2 sensors). I'm not
certain about the number of sensors or exact location but you'll
probably find it easier and quicker if you look from underneath the
vehicle. Just follow the exhaust up to the engine and it's gonna be on
there somewhere.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
There are two classes of pedestrians in these days of reckless motor
traffic - the quick and the dead.
~ Lord Dewar 1933 ~
Climbing into a hot car is like buckling on a pistol. It is the great
equalizer. ~ Henry G. Felsen 1964 ~ |
|
| Back to top |
|
|
Stormin Mormon
Guest
|
| Posted:
Wed Dec 07, 2005 4:53 am Post subject:
Re: Oxygen sensor replacement |
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|
Seems to be two rusty bolts, and a vacuum tube. Anyone else correct me, or
share some wisdom I'm missing?
--
Christopher A. Young
Do good work.
It's longer in the short run
but shorter in the long run.
..
..
"Stormin Mormon" <cayoung61-#spamblock*-@hotmail.com> wrote in message
news:0n6lf.71$XC4.19@twister.nyroc.rr.com...
Another online mechanic suggested EGR. Are they a total pain to change out?
What's the process t here for changing one?
-- |
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