86 Accord - post warm up idle stall
 

Hi All,

Advance thanks for any suggestions.

My 86 Accord (manual / AC) warms up OK on its own. Once I push on the
throttle and get it out of the warm up process the car simply dies unless I
keep the RPMs up about 1500. A slow shift is a dead engine and as I drive in
a hilly urban area this makes for some complex driving gymnastics.

Have replaced the fuel filters and sprayed some carb cleaner. Don't want to
start replacing things randomly if I can avoid it.

Thanks for any thoughts here.

-RA

Re: 86 Accord - post warm up idle stall
 

bg wrote:
> Hi All,
>
> Advance thanks for any suggestions.
>
> My 86 Accord (manual / AC) warms up OK on its own. Once I push on the
> throttle and get it out of the warm up process the car simply dies unless I
> keep the RPMs up about 1500. A slow shift is a dead engine and as I drive in
> a hilly urban area this makes for some complex driving gymnastics.
>
> Have replaced the fuel filters and sprayed some carb cleaner. Don't want to
> start replacing things randomly if I can avoid it.
>
> Thanks for any thoughts here.

99% chance you've got a vacuum leak. Listen for a hissing, whistling or
sucking sound (other than from the carb venturi). If you can't track it
that way, try starting around the carb, where the vacuum lines take off,
and gently pinch off each one to see if it affects the running. If you
find one that does, follow it outward until you find the leak. If it
splits out, repeat the pinching process on each branch.

Re: 86 Accord - post warm up idle stall
 

bg wrote:
> Hi All,
>
> Advance thanks for any suggestions.
>
> My 86 Accord (manual / AC) warms up OK on its own. Once I push on the
> throttle and get it out of the warm up process the car simply dies unless I
> keep the RPMs up about 1500. A slow shift is a dead engine and as I drive in
> a hilly urban area this makes for some complex driving gymnastics.
>
> Have replaced the fuel filters and sprayed some carb cleaner. Don't want to
> start replacing things randomly if I can avoid it.
>
> Thanks for any thoughts here.

99% chance you've got a vacuum leak. Listen for a hissing, whistling or
sucking sound (other than from the carb venturi). If you can't track it
that way, try starting around the carb, where the vacuum lines take off,
and gently pinch off each one to see if it affects the running. If you
find one that does, follow it outward until you find the leak. If it
splits out, repeat the pinching process on each branch.

Re: 86 Accord - post warm up idle stall
 

Matt Ion <soundy106@gmail.com> wrote in
news:1L6Vi.157481$1y4.22805@pd7urf2no:

> bg wrote:
>> Hi All,
>>
>> Advance thanks for any suggestions.
>>
>> My 86 Accord (manual / AC) warms up OK on its own. Once I push on
>> the throttle and get it out of the warm up process the car simply
>> dies unless I keep the RPMs up about 1500. A slow shift is a dead
>> engine and as I drive in a hilly urban area this makes for some
>> complex driving gymnastics.
>>
>> Have replaced the fuel filters and sprayed some carb cleaner.
>> Don't want to start replacing things randomly if I can avoid it.
>>
>> Thanks for any thoughts here.
>
> 99% chance you've got a vacuum leak. Listen for a hissing,
> whistling or sucking sound (other than from the carb venturi). If
> you can't track it that way, try starting around the carb, where
> the vacuum lines take off, and gently pinch off each one to see if
> it affects the running. If you find one that does, follow it
> outward until you find the leak. If it splits out, repeat the
> pinching process on each branch.
>

Especially check vacuum lines 8 and 33... those are the usual suspects
when my '89 LX starts to exhibit those symptoms.

Good luck, Richard

Re: 86 Accord - post warm up idle stall
 

Matt Ion <soundy106@gmail.com> wrote in
news:1L6Vi.157481$1y4.22805@pd7urf2no:

> bg wrote:
>> Hi All,
>>
>> Advance thanks for any suggestions.
>>
>> My 86 Accord (manual / AC) warms up OK on its own. Once I push on
>> the throttle and get it out of the warm up process the car simply
>> dies unless I keep the RPMs up about 1500. A slow shift is a dead
>> engine and as I drive in a hilly urban area this makes for some
>> complex driving gymnastics.
>>
>> Have replaced the fuel filters and sprayed some carb cleaner.
>> Don't want to start replacing things randomly if I can avoid it.
>>
>> Thanks for any thoughts here.
>
> 99% chance you've got a vacuum leak. Listen for a hissing,
> whistling or sucking sound (other than from the carb venturi). If
> you can't track it that way, try starting around the carb, where
> the vacuum lines take off, and gently pinch off each one to see if
> it affects the running. If you find one that does, follow it
> outward until you find the leak. If it splits out, repeat the
> pinching process on each branch.
>

Especially check vacuum lines 8 and 33... those are the usual suspects
when my '89 LX starts to exhibit those symptoms.

Good luck, Richard

Re: 86 Accord - post warm up idle stall
 

"bg" <bg@austin.rr.com> wrote in message
news:4724da4d$0$19622$4c368faf@roadrunner.com...
> Hi All,
>
> Advance thanks for any suggestions.
>
> My 86 Accord (manual / AC) warms up OK on its own. Once I push on the
> throttle and get it out of the warm up process the car simply dies unless
> I
> keep the RPMs up about 1500. A slow shift is a dead engine and as I drive
> in
> a hilly urban area this makes for some complex driving gymnastics.
>
> Have replaced the fuel filters and sprayed some carb cleaner. Don't want
> to
> start replacing things randomly if I can avoid it.
>
> Thanks for any thoughts here.
>
> -RA
>
>


I had something similar several years ago on my 86 accord. There is an idle
shutoff solenoid on the carburetor that is intended to keep the engine from
dieseling. If it fails it will result in the engine failing to run at idle
speed after warming up. It's number 30 in the diagram at the link below.
You can verify if it is working by checking for a clicking sound when
connecting to 12V source.

http://www.hondaautomotiveparts.com/...ry5=CARBURETOR


JP

Re: 86 Accord - post warm up idle stall
 

"bg" <bg@austin.rr.com> wrote in message
news:4724da4d$0$19622$4c368faf@roadrunner.com...
> Hi All,
>
> Advance thanks for any suggestions.
>
> My 86 Accord (manual / AC) warms up OK on its own. Once I push on the
> throttle and get it out of the warm up process the car simply dies unless
> I
> keep the RPMs up about 1500. A slow shift is a dead engine and as I drive
> in
> a hilly urban area this makes for some complex driving gymnastics.
>
> Have replaced the fuel filters and sprayed some carb cleaner. Don't want
> to
> start replacing things randomly if I can avoid it.
>
> Thanks for any thoughts here.
>
> -RA
>
>


I had something similar several years ago on my 86 accord. There is an idle
shutoff solenoid on the carburetor that is intended to keep the engine from
dieseling. If it fails it will result in the engine failing to run at idle
speed after warming up. It's number 30 in the diagram at the link below.
You can verify if it is working by checking for a clicking sound when
connecting to 12V source.

http://www.hondaautomotiveparts.com/...ry5=CARBURETOR


JP

Re: 86 Accord - post warm up idle stall
 

JP wrote:
> "bg" <bg@austin.rr.com> wrote in message
> news:4724da4d$0$19622$4c368faf@roadrunner.com...
>> Hi All,
>>
>> Advance thanks for any suggestions.
>>
>> My 86 Accord (manual / AC) warms up OK on its own. Once I push on the
>> throttle and get it out of the warm up process the car simply dies unless
>> I
>> keep the RPMs up about 1500. A slow shift is a dead engine and as I drive
>> in
>> a hilly urban area this makes for some complex driving gymnastics.
>>
>> Have replaced the fuel filters and sprayed some carb cleaner. Don't want
>> to
>> start replacing things randomly if I can avoid it.
>>
>> Thanks for any thoughts here.
>>
>> -RA
>>
>>
>
>
> I had something similar several years ago on my 86 accord. There is an idle
> shutoff solenoid on the carburetor that is intended to keep the engine from
> dieseling. If it fails it will result in the engine failing to run at idle
> speed after warming up. It's number 30 in the diagram at the link below.
> You can verify if it is working by checking for a clicking sound when
> connecting to 12V source.
>
> http://www.hondaautomotiveparts.com/...ry5=CARBURETOR

There's your other 1% :)

Re: 86 Accord - post warm up idle stall
 

JP wrote:
> "bg" <bg@austin.rr.com> wrote in message
> news:4724da4d$0$19622$4c368faf@roadrunner.com...
>> Hi All,
>>
>> Advance thanks for any suggestions.
>>
>> My 86 Accord (manual / AC) warms up OK on its own. Once I push on the
>> throttle and get it out of the warm up process the car simply dies unless
>> I
>> keep the RPMs up about 1500. A slow shift is a dead engine and as I drive
>> in
>> a hilly urban area this makes for some complex driving gymnastics.
>>
>> Have replaced the fuel filters and sprayed some carb cleaner. Don't want
>> to
>> start replacing things randomly if I can avoid it.
>>
>> Thanks for any thoughts here.
>>
>> -RA
>>
>>
>
>
> I had something similar several years ago on my 86 accord. There is an idle
> shutoff solenoid on the carburetor that is intended to keep the engine from
> dieseling. If it fails it will result in the engine failing to run at idle
> speed after warming up. It's number 30 in the diagram at the link below.
> You can verify if it is working by checking for a clicking sound when
> connecting to 12V source.
>
> http://www.hondaautomotiveparts.com/...ry5=CARBURETOR

There's your other 1% :)