Thanks everyone, I bought some injector cleaner and will give it go.
It started well this weekend, but it was super warm here for January,
so I have to wait for some colder weather to test. I will let you know
how it turns out.....


mrsure wrote:
> We have a 2000 honda odyssey with 100k+ miles on it that has a
> worsening conditioning trying to start and drive it in the morning.
> This was a minor annoyance this summer and fall, but now that winter
> has arrived, its gotten worse. Heres the deal:
>
> In the morning I start the van up, it starts for a moment, then stalls
> out. It will not start after this, it cranks, but never turns over.
> Not until I open the gas lid and unscrew the gas cap for about 5-10
> minutes. Then, I put it back on, and try starting it again. Now it
> will start, but there a lot of dashboard lights on(engine, brake,
> traction control, etc.). If you try and drive it, it will go only
> about 10-20 mph like it has no power. You can floor the gas pedal and
> get nothing. From here just shut it off, and wait another 10-20
> minutes. Now it will start, and everything is fine! no lights, no
> problems, you're good to go for the day. You can drive it work, and
> that night it still starts fine. The next morning the problem starts
> all over again.
>
> We have taken it to three area mechanics and none have been able to
> diagnose the problem yet. So far in our troubleshooting we know theres
> a link with the cold weather. If its stays in a garage overnight it
> seems to start ok in the morning. and there wasn't much problem this
> summer. This winter its much worse however. Also, there seems to be
> something with the gas cap/tank as well. One mechnic said he found a
> faulty code to the gas cap, so we got a new one, but it hasn't helped.
> Taking the gas cap off though seems to have some interaction with
> starting it anyway. We've tried dry gas, with no change, and had all
> the filters possible changed with no improvement.
>
> I am hoping there is some Honda guru who can point me in the right
> direction where to take this problem. Before this problem the Odyssey
> has had a history with Transmission trouble, and we were never
> satisfied with the repairs attempted by the honda dealer(it still
> doesn't shift right(hard downshifts) in normal driving, and seems to
> bolt in gear from a stop sometimes), and also had the timing belt
> replaced which was reccomended given the mileage. Other than that its
> been relatively trouble free before the starting problems.
>
> any help is appreciated....

 

Ok after a couple of cans of fuel injector cleaner heres whats
happening:

It still won't start in cold weather. When you first start it, it
catches, but will die right away unless you keep your foot on the gas
pedal-half way pressed as the manual states. What I have been doing is
keeping the pedal pressed so that the engine continually revs at about
2000 RPM's, and in about 5-10 minutes, when the engine warms up as
noted on the temp gauge, I let it go, and the van is ok to go. If you
let go any time before its warmed up, its gonna die, and be difficult
to start again.

I also noted that once warmed up, idle is at about 500-700 rpm which
feels a bit low to me. Even after warm up, if you rev the engine in
park, it will sometimes stall after you let go when the rpm goes down
to near zero. It seems to have a problem idling steady. So I am
wondering if you guys still think the problem lies in the fuel
injection, or something else like engine tuning, etc?

 

Ok after a couple of cans of fuel injector cleaner heres whats
happening:

It still won't start in cold weather. When you first start it, it
catches, but will die right away unless you keep your foot on the gas
pedal-half way pressed as the manual states. What I have been doing is
keeping the pedal pressed so that the engine continually revs at about
2000 RPM's, and in about 5-10 minutes, when the engine warms up as
noted on the temp gauge, I let it go, and the van is ok to go. If you
let go any time before its warmed up, its gonna die, and be difficult
to start again.

I also noted that once warmed up, idle is at about 500-700 rpm which
feels a bit low to me. Even after warm up, if you rev the engine in
park, it will sometimes stall after you let go when the rpm goes down
to near zero. It seems to have a problem idling steady. So I am
wondering if you guys still think the problem lies in the fuel
injection, or something else like engine tuning, etc?

 

Ok after a couple of cans of fuel injector cleaner heres whats
happening:

It still won't start in cold weather. When you first start it, it
catches, but will die right away unless you keep your foot on the gas
pedal-half way pressed as the manual states. What I have been doing is
keeping the pedal pressed so that the engine continually revs at about
2000 RPM's, and in about 5-10 minutes, when the engine warms up as
noted on the temp gauge, I let it go, and the van is ok to go. If you
let go any time before its warmed up, its gonna die, and be difficult
to start again.

I also noted that once warmed up, idle is at about 500-700 rpm which
feels a bit low to me. Even after warm up, if you rev the engine in
park, it will sometimes stall after you let go when the rpm goes down
to near zero. It seems to have a problem idling steady. So I am
wondering if you guys still think the problem lies in the fuel
injection, or something else like engine tuning, etc?

 

Ok after a couple of cans of fuel injector cleaner heres whats
happening:

It still won't start in cold weather. When you first start it, it
catches, but will die right away unless you keep your foot on the gas
pedal-half way pressed as the manual states. What I have been doing is
keeping the pedal pressed so that the engine continually revs at about
2000 RPM's, and in about 5-10 minutes, when the engine warms up as
noted on the temp gauge, I let it go, and the van is ok to go. If you
let go any time before its warmed up, its gonna die, and be difficult
to start again.

I also noted that once warmed up, idle is at about 500-700 rpm which
feels a bit low to me. Even after warm up, if you rev the engine in
park, it will sometimes stall after you let go when the rpm goes down
to near zero. It seems to have a problem idling steady. So I am
wondering if you guys still think the problem lies in the fuel
injection, or something else like engine tuning, etc?

 

mrsure wrote:
> Ok after a couple of cans of fuel injector cleaner heres whats
> happening:
>
> It still won't start in cold weather. When you first start it, it
> catches, but will die right away unless you keep your foot on the gas
> pedal-half way pressed as the manual states. What I have been doing is
> keeping the pedal pressed so that the engine continually revs at about
> 2000 RPM's, and in about 5-10 minutes, when the engine warms up as
> noted on the temp gauge, I let it go, and the van is ok to go. If you
> let go any time before its warmed up, its gonna die, and be difficult
> to start again.
>
> I also noted that once warmed up, idle is at about 500-700 rpm which
> feels a bit low to me. Even after warm up, if you rev the engine in
> park, it will sometimes stall after you let go when the rpm goes down
> to near zero. It seems to have a problem idling steady. So I am
> wondering if you guys still think the problem lies in the fuel
> injection, or something else like engine tuning, etc?
>
=====================================

When it's cold out, it should start with a high idle, and you should
wait a few seconds and drive away. Lets hope somebody else here has some
good ideas. Did you sign in and SEARCH at www.Odyclub.com ? There's some
good answers there too.
'Curly'

 

mrsure wrote:
> Ok after a couple of cans of fuel injector cleaner heres whats
> happening:
>
> It still won't start in cold weather. When you first start it, it
> catches, but will die right away unless you keep your foot on the gas
> pedal-half way pressed as the manual states. What I have been doing is
> keeping the pedal pressed so that the engine continually revs at about
> 2000 RPM's, and in about 5-10 minutes, when the engine warms up as
> noted on the temp gauge, I let it go, and the van is ok to go. If you
> let go any time before its warmed up, its gonna die, and be difficult
> to start again.
>
> I also noted that once warmed up, idle is at about 500-700 rpm which
> feels a bit low to me. Even after warm up, if you rev the engine in
> park, it will sometimes stall after you let go when the rpm goes down
> to near zero. It seems to have a problem idling steady. So I am
> wondering if you guys still think the problem lies in the fuel
> injection, or something else like engine tuning, etc?
>
=====================================

When it's cold out, it should start with a high idle, and you should
wait a few seconds and drive away. Lets hope somebody else here has some
good ideas. Did you sign in and SEARCH at www.Odyclub.com ? There's some
good answers there too.
'Curly'

 

mrsure wrote:
> Ok after a couple of cans of fuel injector cleaner heres whats
> happening:
>
> It still won't start in cold weather. When you first start it, it
> catches, but will die right away unless you keep your foot on the gas
> pedal-half way pressed as the manual states. What I have been doing is
> keeping the pedal pressed so that the engine continually revs at about
> 2000 RPM's, and in about 5-10 minutes, when the engine warms up as
> noted on the temp gauge, I let it go, and the van is ok to go. If you
> let go any time before its warmed up, its gonna die, and be difficult
> to start again.
>
> I also noted that once warmed up, idle is at about 500-700 rpm which
> feels a bit low to me. Even after warm up, if you rev the engine in
> park, it will sometimes stall after you let go when the rpm goes down
> to near zero. It seems to have a problem idling steady. So I am
> wondering if you guys still think the problem lies in the fuel
> injection, or something else like engine tuning, etc?
>
=====================================

When it's cold out, it should start with a high idle, and you should
wait a few seconds and drive away. Lets hope somebody else here has some
good ideas. Did you sign in and SEARCH at www.Odyclub.com ? There's some
good answers there too.
'Curly'

 

mrsure wrote:
> Ok after a couple of cans of fuel injector cleaner heres whats
> happening:
>
> It still won't start in cold weather. When you first start it, it
> catches, but will die right away unless you keep your foot on the gas
> pedal-half way pressed as the manual states. What I have been doing is
> keeping the pedal pressed so that the engine continually revs at about
> 2000 RPM's, and in about 5-10 minutes, when the engine warms up as
> noted on the temp gauge, I let it go, and the van is ok to go. If you
> let go any time before its warmed up, its gonna die, and be difficult
> to start again.
>
> I also noted that once warmed up, idle is at about 500-700 rpm which
> feels a bit low to me. Even after warm up, if you rev the engine in
> park, it will sometimes stall after you let go when the rpm goes down
> to near zero. It seems to have a problem idling steady. So I am
> wondering if you guys still think the problem lies in the fuel
> injection, or something else like engine tuning, etc?
>
=====================================

When it's cold out, it should start with a high idle, and you should
wait a few seconds and drive away. Lets hope somebody else here has some
good ideas. Did you sign in and SEARCH at www.Odyclub.com ? There's some
good answers there too.
'Curly'

 

mrsure wrote:
> Ok after a couple of cans of fuel injector cleaner heres whats
> happening:
>
> It still won't start in cold weather. When you first start it, it
> catches, but will die right away unless you keep your foot on the gas
> pedal-half way pressed as the manual states. What I have been doing is
> keeping the pedal pressed so that the engine continually revs at about
> 2000 RPM's, and in about 5-10 minutes, when the engine warms up as
> noted on the temp gauge, I let it go, and the van is ok to go. If you
> let go any time before its warmed up, its gonna die, and be difficult
> to start again.
>
> I also noted that once warmed up, idle is at about 500-700 rpm which
> feels a bit low to me. Even after warm up, if you rev the engine in
> park, it will sometimes stall after you let go when the rpm goes down
> to near zero. It seems to have a problem idling steady. So I am
> wondering if you guys still think the problem lies in the fuel
> injection, or something else like engine tuning, etc?
>
some general suggestions:

1. make sure the valve lash is set right.
2. make sure the idle is set right - per factory procedure.
3. make sure the grade of motor oil is correct - you may not think this
relevant, but oil gets more viscous when cold. if the grade is
incorrect to start with, it can be too viscous when cold and choke the
motor. try it with a lawn mower some time if you want to prove it.
4. make sure all the ignition componentry is new and in top condition.
aged plugs don't fire as efficiently and weak spark won't yield complete
combustion.

 

mrsure wrote:
> Ok after a couple of cans of fuel injector cleaner heres whats
> happening:
>
> It still won't start in cold weather. When you first start it, it
> catches, but will die right away unless you keep your foot on the gas
> pedal-half way pressed as the manual states. What I have been doing is
> keeping the pedal pressed so that the engine continually revs at about
> 2000 RPM's, and in about 5-10 minutes, when the engine warms up as
> noted on the temp gauge, I let it go, and the van is ok to go. If you
> let go any time before its warmed up, its gonna die, and be difficult
> to start again.
>
> I also noted that once warmed up, idle is at about 500-700 rpm which
> feels a bit low to me. Even after warm up, if you rev the engine in
> park, it will sometimes stall after you let go when the rpm goes down
> to near zero. It seems to have a problem idling steady. So I am
> wondering if you guys still think the problem lies in the fuel
> injection, or something else like engine tuning, etc?
>
some general suggestions:

1. make sure the valve lash is set right.
2. make sure the idle is set right - per factory procedure.
3. make sure the grade of motor oil is correct - you may not think this
relevant, but oil gets more viscous when cold. if the grade is
incorrect to start with, it can be too viscous when cold and choke the
motor. try it with a lawn mower some time if you want to prove it.
4. make sure all the ignition componentry is new and in top condition.
aged plugs don't fire as efficiently and weak spark won't yield complete
combustion.

 

mrsure wrote:
> Ok after a couple of cans of fuel injector cleaner heres whats
> happening:
>
> It still won't start in cold weather. When you first start it, it
> catches, but will die right away unless you keep your foot on the gas
> pedal-half way pressed as the manual states. What I have been doing is
> keeping the pedal pressed so that the engine continually revs at about
> 2000 RPM's, and in about 5-10 minutes, when the engine warms up as
> noted on the temp gauge, I let it go, and the van is ok to go. If you
> let go any time before its warmed up, its gonna die, and be difficult
> to start again.
>
> I also noted that once warmed up, idle is at about 500-700 rpm which
> feels a bit low to me. Even after warm up, if you rev the engine in
> park, it will sometimes stall after you let go when the rpm goes down
> to near zero. It seems to have a problem idling steady. So I am
> wondering if you guys still think the problem lies in the fuel
> injection, or something else like engine tuning, etc?
>
some general suggestions:

1. make sure the valve lash is set right.
2. make sure the idle is set right - per factory procedure.
3. make sure the grade of motor oil is correct - you may not think this
relevant, but oil gets more viscous when cold. if the grade is
incorrect to start with, it can be too viscous when cold and choke the
motor. try it with a lawn mower some time if you want to prove it.
4. make sure all the ignition componentry is new and in top condition.
aged plugs don't fire as efficiently and weak spark won't yield complete
combustion.

 

mrsure wrote:
> Ok after a couple of cans of fuel injector cleaner heres whats
> happening:
>
> It still won't start in cold weather. When you first start it, it
> catches, but will die right away unless you keep your foot on the gas
> pedal-half way pressed as the manual states. What I have been doing is
> keeping the pedal pressed so that the engine continually revs at about
> 2000 RPM's, and in about 5-10 minutes, when the engine warms up as
> noted on the temp gauge, I let it go, and the van is ok to go. If you
> let go any time before its warmed up, its gonna die, and be difficult
> to start again.
>
> I also noted that once warmed up, idle is at about 500-700 rpm which
> feels a bit low to me. Even after warm up, if you rev the engine in
> park, it will sometimes stall after you let go when the rpm goes down
> to near zero. It seems to have a problem idling steady. So I am
> wondering if you guys still think the problem lies in the fuel
> injection, or something else like engine tuning, etc?
>
some general suggestions:

1. make sure the valve lash is set right.
2. make sure the idle is set right - per factory procedure.
3. make sure the grade of motor oil is correct - you may not think this
relevant, but oil gets more viscous when cold. if the grade is
incorrect to start with, it can be too viscous when cold and choke the
motor. try it with a lawn mower some time if you want to prove it.
4. make sure all the ignition componentry is new and in top condition.
aged plugs don't fire as efficiently and weak spark won't yield complete
combustion.