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  #1 (permalink)  
Old 25 Feb 2007, 10:10 pm
Steve-88-Honda-Accord
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Default 88 Honda Accord high idle problem

Hi. I picked up aan 88 Honda Accord LX with just 58k miles on it. It
generally looks and runs great.

About a few weeks after I got it, it started to idle high when cold. When I
started it up, it would run around 1.5-2k rpm in park and about 1.3-1.75 in
neutral or drive. Generally after it warmed up, it would drop down to .75-1k
rpm and act normally. It was and still is manageable.

I tried removing the air filter housing and got in there with a can of carb
spray and sprayed in and around the carb. It did really seem to help for
about 3 weeks. It mostly behaved normally for that time.

It has now returned to its former behavior, though not quite as bad. It
rarely get as high as 2k rpm. More like 1.5-1.75. It does seem to take
longer, however, for the idle to settle down to normal….longer drives and
longer time. I’ve tried revving the engine to 8k rpm for a minute or so and
that seems to help a little bit, but not much. It just seems like it needs
to warm up. If I drive it a short distance, park it and then start it again,
sometimes it will then idle normally.

I’m planning on spraying it out again, maybe using 2 cans this time. Is this
something I need to be worried about and get it checked out by a mechanic
right away? Can it be symptomatic of a more serious problem? I’ve been
doing a lot of research and I love to figure things out for myself and it
would be a fun little project to be able to fix it on my own.

Any suggestions? Should I be looking at another possibility other than the
carb? How tough is it to pull out the old carb and put in a rebuilt one?
Should I get a new one or rebuilt if I decide to go that route?

Thank you in advance!

Steve, L.A.

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  #2 (permalink)  
Old 25 Feb 2007, 11:49 pm
motsco_
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Posts: n/a
Default Re: 88 Honda Accord high idle problem

Steve-88-Honda-Accord wrote:
> Hi. I picked up aan 88 Honda Accord LX with just 58k miles on it. It
> generally looks and runs great.
>
> About a few weeks after I got it, it started to idle high when cold. When I
> started it up, it would run around 1.5-2k rpm in park and about 1.3-1.75 in
> neutral or drive. Generally after it warmed up, it would drop down to .75-1k
> rpm and act normally. It was and still is manageable.
>
> I tried removing the air filter housing and got in there with a can of carb
> spray and sprayed in and around the carb. It did really seem to help for
> about 3 weeks. It mostly behaved normally for that time.
>
> It has now returned to its former behavior, though not quite as bad. It
> rarely get as high as 2k rpm. More like 1.5-1.75. It does seem to take
> longer, however, for the idle to settle down to normal….longer drives and
> longer time. I’ve tried revving the engine to 8k rpm for a minute or so and
> that seems to help a little bit, but not much. It just seems like it needs
> to warm up. If I drive it a short distance, park it and then start it again,
> sometimes it will then idle normally.
>
> I’m planning on spraying it out again, maybe using 2 cans this time. Is this
> something I need to be worried about and get it checked out by a mechanic
> right away? Can it be symptomatic of a more serious problem? I’ve been
> doing a lot of research and I love to figure things out for myself and it
> would be a fun little project to be able to fix it on my own.
>
> Any suggestions? Should I be looking at another possibility other than the
> carb? How tough is it to pull out the old carb and put in a rebuilt one?
> Should I get a new one or rebuilt if I decide to go that route?
>
> Thank you in advance!
>
> Steve, L.A.
>

---------------------------------

Just for kicks, try filling the coolant reservoir to the MAX mark and
see if your problem goes away. On the fuel-injected engines, the
computer messes up the timing / mixture if there's AIR in the top of the
rad instead of coolant. Couldn't hurt for yours either.

'Curly'
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  #3 (permalink)  
Old 26 Feb 2007, 06:21 am
N.E.Ohio Bob
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Posts: n/a
Default Re: 88 Honda Accord high idle problem

Steve-88-Honda-Accord wrote:
> Hi. I picked up aan 88 Honda Accord LX with just 58k miles on it. It
> generally looks and runs great.
>
> About a few weeks after I got it, it started to idle high when cold. When I
> started it up, it would run around 1.5-2k rpm in park and about 1.3-1.75 in
> neutral or drive. Generally after it warmed up, it would drop down to .75-1k
> rpm and act normally. It was and still is manageable.
>

SNIP

There are about forty different circuts on that carburator. If you are
handy and LUCKY, you may be able to find the choke pull-off and choke
speed cam and see if they are sticky or stuck. There are also float
level problems with that car from junk in the float bowl.
Good luck! bob
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  #4 (permalink)  
Old 26 Feb 2007, 12:53 pm
Tegger
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Posts: n/a
Default Re: 88 Honda Accord high idle problem

"Steve-88-Honda-Accord" <u32059@uwe> wrote in news:6e5d63d168d7b@uwe:

>
> It has now returned to its former behavior, though not quite as bad.
> It rarely get as high as 2k rpm. More like 1.5-1.75. It does seem
> to take longer, however, for the idle to settle down to
> normal….longer drives and longer time.




If you're telling us the car idles at 1,500-1,750 rpm when dead-cold,
that's normal.

If you're now saying it just takes too long to step off fast-idle, then
either your choke is sticking closed, or your thermostat is too old.

How is your heater output? Seems to take a long time to get decently hot?


<snip>

>
> Any suggestions? Should I be looking at another possibility other
> than the carb? How tough is it to pull out the old carb and put in a
> rebuilt one? Should I get a new one or rebuilt if I decide to go that
> route?
>



Don't change the carb. At this point, that's using a sledgehammer to kill a
fly. Check out the other stuff first.


--
Tegger

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/
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  #5 (permalink)  
Old 26 Feb 2007, 05:43 pm
Eric
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Posts: n/a
Default Re: 88 Honda Accord high idle problem

Steve-88-Honda-Accord wrote:
>
> Hi. I picked up aan 88 Honda Accord LX with just 58k miles on it. It
> generally looks and runs great.
>
> About a few weeks after I got it, it started to idle high when cold.
> When I started it up, it would run around 1.5-2k rpm in park and about
> 1.3-1.75 in neutral or drive. Generally after it warmed up, it would
> drop down to .75-1k rpm and act normally. It was and still is manageable.
>
> I tried removing the air filter housing and got in there with a can of
> carb spray and sprayed in and around the carb. It did really seem to
> help for about 3 weeks. It mostly behaved normally for that time.
>
> It has now returned to its former behavior, though not quite as bad. It
> rarely get as high as 2k rpm. More like 1.5-1.75. It does seem to take
> longer, however, for the idle to settle down to normal….longer drives
> and longer time. I’ve tried revving the engine to 8k rpm for a minute
> or so and that seems to help a little bit, but not much. It just seems
> like it needs to warm up. If I drive it a short distance, park it and
> then start it again, sometimes it will then idle normally.
>
> I’m planning on spraying it out again, maybe using 2 cans this time.
> Is this something I need to be worried about and get it checked out by a
> mechanic right away? Can it be symptomatic of a more serious problem?
> I’ve been doing a lot of research and I love to figure things out for
> myself and it would be a fun little project to be able to fix it on my
> own.
>
> Any suggestions? Should I be looking at another possibility other than
> the carb? How tough is it to pull out the old carb and put in a rebuilt
> one? Should I get a new one or rebuilt if I decide to go that route?
>


Don't bother replacing the carburetor unless it's physically worn out.
Instead, go to your Honda dealer and ask for a "top clean kit." This kit
was developed some time ago by a Honda tech looking for a faster way to
overhaul Honda's carburetors. The kit includes everything you need
including detailed instructions though new floats must be purchased
separately (and you might want to get those too just to be on the safe
side). With a "top clean kit" the carburetor is overhauled on the car by
removing the air horn. It's fairly straight forward to do especially by an
experienced tech.

Eric
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  #6 (permalink)  
Old 26 Feb 2007, 06:24 pm
Steve-88-Honda-Accord via CarKB.com
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Posts: n/a
Default Re: 88 Honda Accord high idle problem

>Just for kicks, try filling the coolant reservoir to the MAX mark and
>see if your problem goes away. On the fuel-injected engines, the
>computer messes up the timing / mixture if there's AIR in the top of the
>rad instead of coolant. Couldn't hurt for yours either.
>
>'Curly'


Thank you. I was going to make a separate post about this, but the cooling
system seems to be acting strangely. When I bought the car, the owner told
me that a new radiator had been put in, and visually it does appear to be
pretty new. Since then, on two occasions, the car has overheated and the
cooling system had dumped all the coolant, though there is no apparent leak.
On refilling the radiator, nothing leaks out. However, it would suddenly
dump all the coolant. Then after refilling, it would be fine. It has been
fine for a while now, maybe almost two months. There is sometimes the smell
of coolant about the engine, though no visible signs of a leak in the engine
compartment or on the ground. Puzzler.

--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx...-cars/200702/1

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  #7 (permalink)  
Old 26 Feb 2007, 06:26 pm
Steve-88-Honda-Accord via CarKB.com
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Posts: n/a
Default Re: 88 Honda Accord high idle problem

N.E.Ohio Bob wrote:
>> Hi. I picked up aan 88 Honda Accord LX with just 58k miles on it. It
>> generally looks and runs great.

>[quoted text clipped - 3 lines]
>> neutral or drive. Generally after it warmed up, it would drop down to .75-1k
>> rpm and act normally. It was and still is manageable.

>
> SNIP
>
> There are about forty different circuts on that carburator. If you are
>handy and LUCKY, you may be able to find the choke pull-off and choke
>speed cam and see if they are sticky or stuck. There are also float
>level problems with that car from junk in the float bowl.
> Good luck! bob


Sounds like more than I can do. Overall the behavior of the vehicle suggests
something is sticky, gummed up. Hoping it's as simple as cleaning it. Have
tried the gas additive but does not seem to really help. Thank you.

--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx...-cars/200702/1

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  #8 (permalink)  
Old 26 Feb 2007, 06:28 pm
Steve-88-Honda-Accord via CarKB.com
Guest
 
Posts: n/a
Default Re: 88 Honda Accord high idle problem

Eric wrote:

>Don't bother replacing the carburetor unless it's physically worn out.
>Instead, go to your Honda dealer and ask for a "top clean kit." This kit
>was developed some time ago by a Honda tech looking for a faster way to
>overhaul Honda's carburetors. The kit includes everything you need
>including detailed instructions though new floats must be purchased
>separately (and you might want to get those too just to be on the safe
>side). With a "top clean kit" the carburetor is overhauled on the car by
>removing the air horn. It's fairly straight forward to do especially by an
>experienced tech.
>
>Eric


Thank you. That sounds like a great option if Itseems like cleaning the card
is the way to go. Any ideasa how much it costs and how long of an operation
iot is?

--
Message posted via http://www.carkb.com

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  #9 (permalink)  
Old 26 Feb 2007, 06:34 pm
Steve-88-Honda-Accord via CarKB.com
Guest
 
Posts: n/a
Default Re: 88 Honda Accord high idle problem

Tegger wrote:
>> It has now returned to its former behavior, though not quite as bad.
>> It rarely get as high as 2k rpm. More like 1.5-1.75. It does seem
>> to take longer, however, for the idle to settle down to
>> normal….longer drives and longer time.

>
>If you're telling us the car idles at 1,500-1,750 rpm when dead-cold,
>that's normal.
>
>If you're now saying it just takes too long to step off fast-idle, then
>either your choke is sticking closed, or your thermostat is too old.
>
>How is your heater output? Seems to take a long time to get decently hot?
>
>
>> Any suggestions? Should I be looking at another possibility other
>> than the carb? How tough is it to pull out the old carb and put in a
>> rebuilt one? Should I get a new one or rebuilt if I decide to go that
>> route?

>
>Don't change the carb. At this point, that's using a sledgehammer to kill a
>fly. Check out the other stuff first.
>


It does not step off fast-idle. It takes at least 10 minutest for it to calm
down.st

Choke sticking is something that cleaning can take care of? Spraying it out
with carb cleaner?

Heater output is not good...weak and takes a while to come up. I had
attributed this to a bad heater coil, but perhaps you are suggesting both
problems are linked to a bad thermostat. By the way ambient temperature does
not seem to be a factor...hot day, cold day...seems to behave almost the same.


I was going to make a separate post about this, but the cooling system
seems to be acting strangely. When I bought the car, the owner told me that
a new radiator had been put in, and visually it does appear to be pretty new.
Since then, on two occasions, the car has overheated and the cooling system
had dumped all the coolant, though there is no apparent leak. On refilling
the radiator, nothing leaks out. However, it would suddenly dump all the
coolant. Then after refilling, it would be fine. It has been fine for a
while now, maybe almost two months. There is sometimes the smell of coolant
about the engine, though no visible signs of a leak in the engine compartment
or on the ground. Puzzler.

Thank you.

--
Message posted via CarKB.com
http://www.carkb.com/Uwe/Forums.aspx...-cars/200702/1

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  #10 (permalink)  
Old 26 Feb 2007, 07:24 pm
Tegger
Guest
 
Posts: n/a
Default Re: 88 Honda Accord high idle problem

"Steve-88-Honda-Accord via CarKB.com" <u32059@uwe> wrote in
news:6e6813a0bdd85@uwe:

> Tegger wrote:
>>> It has now returned to its former behavior, though not quite as bad.
>>> It rarely get as high as 2k rpm. More like 1.5-1.75. It does seem
>>> to take longer, however, for the idle to settle down to
>>> normal….longer drives and longer time.

>>
>>If you're telling us the car idles at 1,500-1,750 rpm when dead-cold,
>>that's normal.
>>
>>If you're now saying it just takes too long to step off fast-idle,
>>then either your choke is sticking closed, or your thermostat is too
>>old.
>>
>>How is your heater output? Seems to take a long time to get decently
>>hot?
>>
>>
>>> Any suggestions? Should I be looking at another possibility other
>>> than the carb? How tough is it to pull out the old carb and put in
>>> a rebuilt one? Should I get a new one or rebuilt if I decide to go
>>> that route?

>>
>>Don't change the carb. At this point, that's using a sledgehammer to
>>kill a fly. Check out the other stuff first.
>>

>
> It does not step off fast-idle. It takes at least 10 minutest for it
> to calm down.st




Does it gradually lose revs as it warms up? Or does it stay way up there
then all of a sudden drop down to normal hot idle?


>
> Choke sticking is something that cleaning can take care of? Spraying
> it out with carb cleaner?




There is a LOT to choke control. Some of it is dependent on coolant
temperature, most is not.

With all the checks and adjustments, I would strongly suggest you invest in
a Helm manual. Either directly from www.helminc.com or from eBay.



>
> Heater output is not good...weak and takes a while to come up. I had
> attributed this to a bad heater coil, but perhaps you are suggesting
> both problems are linked to a bad thermostat.




Your interior heater operates by stealing heated coolant from the engine
and routing it through the passenger compartment. If the thermostat is
stuck open, the engine will run way cool, Your heater will be weak and the
choke will try to stay partly-closed.




> By the way ambient
> temperature does not seem to be a factor...hot day, cold day...seems
> to behave almost the same.
>
>
> I was going to make a separate post about this, but the cooling
> system
> seems to be acting strangely. When I bought the car, the owner told
> me that a new radiator had been put in, and visually it does appear to
> be pretty new.




There's a LOT to a cooling system too. The rad is just the heat exchanger.



> Since then, on two occasions, the car has overheated
> and the cooling system had dumped all the coolant, though there is no
> apparent leak. On refilling the radiator, nothing leaks out.
> However, it would suddenly dump all the coolant. Then after
> refilling, it would be fine. It has been fine for a while now, maybe
> almost two months. There is sometimes the smell of coolant about the
> engine, though no visible signs of a leak in the engine compartment
> or on the ground. Puzzler.
>



When it "dumps" the coolant, does it do so by spewing it through the
overflow bottle? You may want to get a pressure check to confirm you don't
have a blown head gasket.


--
Tegger

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/
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