Annoying intermittant power loss

The carbureted vehicles don't have oxygen sensors.

 

The 1987 Accord most certainly does have an oxygen sensor. I
thought so off the top of my head, because my recollection
is that the oxygen sensor was a 1970s or so emissions
control development (someone can google and nitpick away for
details). www.slhonda.com 's parts site, under "exhaust
manifold" confirms.

This may not be thee solution to the intermittent power loss
problem, but I wouldn't disregard it entirely, either,
especially if the car is using the original, almost
20-year-old oxygen sensor.

https://www.automedicsupply.com/ wants $32 + shipping for an
OEM Denso sensor for the 87 Accord LX/DX. I used them for
one a year or so ago. Good service. Best price for OEM by
far. Packaging indicates this is a legit Denso sensor. Very
easy to replace. Borrow an O2 sensor wrench from Autozone at
no charge.

 

The 1987 Accord most certainly does have an oxygen sensor. I
thought so off the top of my head, because my recollection
is that the oxygen sensor was a 1970s or so emissions
control development (someone can google and nitpick away for
details). www.slhonda.com 's parts site, under "exhaust
manifold" confirms.

This may not be thee solution to the intermittent power loss
problem, but I wouldn't disregard it entirely, either,
especially if the car is using the original, almost
20-year-old oxygen sensor.

https://www.automedicsupply.com/ wants $32 + shipping for an
OEM Denso sensor for the 87 Accord LX/DX. I used them for
one a year or so ago. Good service. Best price for OEM by
far. Packaging indicates this is a legit Denso sensor. Very
easy to replace. Borrow an O2 sensor wrench from Autozone at
no charge.

 

Didn't say that your car had or didn't have an Oxygen sensor. Just trying
to give you some sense of what can cause your problem and some place to look
for solutions. You're looking for help ands instead of being appreciative
of what you're getting you tend to have a negative attitude instead. Good
Luck (and good-bye)
MLD

 

Didn't say that your car had or didn't have an Oxygen sensor. Just trying
to give you some sense of what can cause your problem and some place to look
for solutions. You're looking for help ands instead of being appreciative
of what you're getting you tend to have a negative attitude instead. Good
Luck (and good-bye)
MLD

 

Okay, put it this way: none of MY three 87 Accords have had oxygen
sensors, including this one. Yes, I am quite sure about this, so don't
tell me "Yes it does, you're just not looking hard enough." I got under
the car with a Honda service tech while he told me where it SHOULD be on
the first one, and there was nothing. When I finally went to another
dealer service center, I was told by the service manager that most
carb'd 87s DON'T have them.

So there you have it.

Given that the O2 sensor is supposed to measure the burn gasses and
allow the ECU to compensate, I see little point in having once since
there's no real way for the ECU to actually adjust the carb on these cars.

 

Okay, put it this way: none of MY three 87 Accords have had oxygen
sensors, including this one. Yes, I am quite sure about this, so don't
tell me "Yes it does, you're just not looking hard enough." I got under
the car with a Honda service tech while he told me where it SHOULD be on
the first one, and there was nothing. When I finally went to another
dealer service center, I was told by the service manager that most
carb'd 87s DON'T have them.

So there you have it.

Given that the O2 sensor is supposed to measure the burn gasses and
allow the ECU to compensate, I see little point in having once since
there's no real way for the ECU to actually adjust the carb on these cars.

 

All I said what that there isn't an oxygen sensor.

Touchy, touchy.

 

All I said what that there isn't an oxygen sensor.

Touchy, touchy.

 

Site http://www.pauldesign.ru/honda/about.html indicates
that this is indeed very possible. It says about the 86-89
Accord:

" ... [In the] USA several versions of the carbureted engine
existed, which was modernized several times.... Depending on
the region where the Accord was sold, the engines may have
had slight differences such as the ECU adjustment depending
on the gasoline available, the absence of the oxygen sensor
etc."

Though let me duck and add, for the archives if not for you:
You say you are looking under the car. From the online parts
drawings, it looks to me like anyone seeking the oxygen
sensor should simply be looking at the top or front of the
exhaust manifold (depending on which 1987 Accord model you
have). It should be pretty readily accessible just under the
hood.

My 87 Civic manual has a drawing clearly labeled "exhaust
manifold... 1984-1987 carbureted engine." The oxygen sensor
is clearly shown on it, going into the top of the manifold
(but not quite the same way the 87 Accord drawings show).

But I realize a Honda tech would have known what to look for
and it would be darn near impossible to miss. So you must
have one of these Accords that the site I link above says
has no oxygen sensor.

carb on these cars.

"Once the oxygen sensor detect that the mixture is lean
or
rich, it will send a voltage signal to the engine management
ECU
computer, which in turn issues a command to the mixture
control
solenoid found in the carburetor to adjust the mixture
before it enters
the engine. This procedure assures that the engine will be
given not
just the best possible fuel economy but the lowest possible
exhaust
emissions as well."
http://www.partstrain.com/ShopByDepartment/Oxygen_Sensor

The net has discussion at many sites of carburetors having
input from the ECU to control emissions. Again, I don't know
what the Honda Accord has exactly, beyond what the parts
sites and manuals claim.

Good luck.

 

Site http://www.pauldesign.ru/honda/about.html indicates
that this is indeed very possible. It says about the 86-89
Accord:

" ... [In the] USA several versions of the carbureted engine
existed, which was modernized several times.... Depending on
the region where the Accord was sold, the engines may have
had slight differences such as the ECU adjustment depending
on the gasoline available, the absence of the oxygen sensor
etc."

Though let me duck and add, for the archives if not for you:
You say you are looking under the car. From the online parts
drawings, it looks to me like anyone seeking the oxygen
sensor should simply be looking at the top or front of the
exhaust manifold (depending on which 1987 Accord model you
have). It should be pretty readily accessible just under the
hood.

My 87 Civic manual has a drawing clearly labeled "exhaust
manifold... 1984-1987 carbureted engine." The oxygen sensor
is clearly shown on it, going into the top of the manifold
(but not quite the same way the 87 Accord drawings show).

But I realize a Honda tech would have known what to look for
and it would be darn near impossible to miss. So you must
have one of these Accords that the site I link above says
has no oxygen sensor.

carb on these cars.

"Once the oxygen sensor detect that the mixture is lean
or
rich, it will send a voltage signal to the engine management
ECU
computer, which in turn issues a command to the mixture
control
solenoid found in the carburetor to adjust the mixture
before it enters
the engine. This procedure assures that the engine will be
given not
just the best possible fuel economy but the lowest possible
exhaust
emissions as well."
http://www.partstrain.com/ShopByDepartment/Oxygen_Sensor

The net has discussion at many sites of carburetors having
input from the ECU to control emissions. Again, I don't know
what the Honda Accord has exactly, beyond what the parts
sites and manuals claim.

Good luck.

 

my 1981 VW rabbit had one. the CIS injection system on that thing was
completely mechanical, from what i remember. so i have NO clue what the
O2 sensors purpose was. i remember stripping the threads on the exhaust
manifold changing it, then driving it for months with just a bolt wedged
in the hole in the manifold. made no difference in driveability.

 

my 1981 VW rabbit had one. the CIS injection system on that thing was
completely mechanical, from what i remember. so i have NO clue what the
O2 sensors purpose was. i remember stripping the threads on the exhaust
manifold changing it, then driving it for months with just a bolt wedged
in the hole in the manifold. made no difference in driveability.

 

Do you have any kind of service manual for the model and year of your car?
Factory,Haynes,Chilton,or other?

 

I started there... the tech on the phone had me searching all the way
back to the catalytic converter.

There are no wires going anywhere near the carb or anything attached to
it on these three cars, either... how it manages air/fuel mixture is
beyond me because there's no mixture screw either, aside from idle mixture.

 

I started there... the tech on the phone had me searching all the way
back to the catalytic converter.

There are no wires going anywhere near the carb or anything attached to
it on these three cars, either... how it manages air/fuel mixture is
beyond me because there's no mixture screw either, aside from idle mixture.

 

I understand. As long as one has some idea of what it looks
like, it's really hard to miss, so, yes, you must have and
have had Accords without them. I was mistaken, and the parts
sites are misleading on this matter, etc.

from idle mixture.

Tricky, especially since the carburetor may be the source of
your Accord's problem. This might be an instance where
owning a Helm factory service manual might be a great aid, I
suppose. Good luck.

 

I understand. As long as one has some idea of what it looks
like, it's really hard to miss, so, yes, you must have and
have had Accords without them. I was mistaken, and the parts
sites are misleading on this matter, etc.

from idle mixture.

Tricky, especially since the carburetor may be the source of
your Accord's problem. This might be an instance where
owning a Helm factory service manual might be a great aid, I
suppose. Good luck.

 

Matt,
I have personal experience with this. I too have a '87 accord that is
carbureated.. I began intermittantly losing power. I initially replaced
the fuel filter. It did not seem to make a difference. the problem got
worse, especially at times of high fuel demand, such as when climbing a
big hill. I looked on google groups for an answer. I found a posting
that said that the 87 Accord was one model that had had some corrosion
issues with the fuel filler hose that would clog the screen on the fuel
pump pickup line. I bought a new pump, and screen (about $65). It
completely resolved my problem. The pump is very easy to replace. there
is a access hole behind the drivers side rear seat. lower the rear
seat, and you will see it in the floor of the trunk..
hope this helps.
Mike

 

Matt,
I have personal experience with this. I too have a '87 accord that is
carbureated.. I began intermittantly losing power. I initially replaced
the fuel filter. It did not seem to make a difference. the problem got
worse, especially at times of high fuel demand, such as when climbing a
big hill. I looked on google groups for an answer. I found a posting
that said that the 87 Accord was one model that had had some corrosion
issues with the fuel filler hose that would clog the screen on the fuel
pump pickup line. I bought a new pump, and screen (about $65). It
completely resolved my problem. The pump is very easy to replace. there
is a access hole behind the drivers side rear seat. lower the rear
seat, and you will see it in the floor of the trunk..
hope this helps.
Mike