99 accord, manual, 5 spd.

When I depressed the clutch, the RPM normally drops to 700 quickly,
which is good. But occasionally it drops to 100 or lower and then rises
to 700 slowly. Sometimes, it's so slow that the engine stalls
(smoothly). After I turn the key to retart it, it runs OK again.

I doubt it's the Idle Air Control (IAC) valve's problem. But I don't
understand why a restart makes the problem gone right away.

Anybody has any idea?

Thanks!

 

dgjybc@yahoo.com wrote in
news:1114226239.073097.236680@l41g2000cwc.googlegr oups.com:

> 99 accord, manual, 5 spd.
>
> When I depressed the clutch, the RPM normally drops to 700 quickly,
> which is good. But occasionally it drops to 100 or lower



No, it drops to 500. Everybody thinks that bottom line is 100. It's 500.


> and then rises
> to 700 slowly. Sometimes, it's so slow that the engine stalls
> (smoothly). After I turn the key to retart it, it runs OK again.
>
> I doubt it's the Idle Air Control (IAC) valve's problem. But I don't
> understand why a restart makes the problem gone right away.
>
> Anybody has any idea?


Check:
1) Coolant level in the RAD
2) Check the cleanliness of the throttle body


--
TeGGeR®

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

 

"TeGGeR®" <tegger@tegger.c0m> wrote in message
news:Xns96411437D88Etegger@207.14.113.17...
> dgjybc@yahoo.com wrote in
> news:1114226239.073097.236680@l41g2000cwc.googlegr oups.com:
>
> > 99 accord, manual, 5 spd.
> >
> > When I depressed the clutch, the RPM normally drops to 700 quickly,
> > which is good. But occasionally it drops to 100 or lower
>
>
>
> No, it drops to 500. Everybody thinks that bottom line is 100. It's 500.
>
>
> > and then rises
> > to 700 slowly. Sometimes, it's so slow that the engine stalls
> > (smoothly). After I turn the key to retart it, it runs OK again.
> >
> > I doubt it's the Idle Air Control (IAC) valve's problem. But I don't
> > understand why a restart makes the problem gone right away.
> >
> > Anybody has any idea?
>
>
> Check:
> 1) Coolant level in the RAD
> 2) Check the cleanliness of the throttle body
>
>
> --
> TeGGeR®
>
> The Unofficial Honda/Acura FAQ
> www.tegger.com/hondafaq/

Same thing happens to my 92 civic dx. What does the coolant level and
throttle body cleanliness have to do with this? I've cleaned the whole
intake manifold and throttle body, replaced the PCV valve, cleaned the IACV
and FITV, and it's still doing it even though the idle has stabilized a
little (PCV was really dirty).

It still dies from time to time.

I know when I taking off, clutch half way depressed, in first, sometimes the
"engine died" light shows and it's like the engine dies, but then it
restarts and when I give it gas it continues smoothly. Do you think the
clutch needs replacement and is causing this?

 

In article <cKOdnaxdYqKwN_ffRVn-tQ@comcast.com>,
"John" <welcomehowcome@hotmail.com> wrote:

> "TeGGeR®" <tegger@tegger.c0m> wrote in message
> news:Xns96411437D88Etegger@207.14.113.17...
> > dgjybc@yahoo.com wrote in
> > news:1114226239.073097.236680@l41g2000cwc.googlegr oups.com:
> >
> > > 99 accord, manual, 5 spd.
> > >
> > > When I depressed the clutch, the RPM normally drops to 700 quickly,
> > > which is good. But occasionally it drops to 100 or lower
> >
> >
> >
> > No, it drops to 500. Everybody thinks that bottom line is 100. It's 500.
> >
> >
> > > and then rises
> > > to 700 slowly. Sometimes, it's so slow that the engine stalls
> > > (smoothly). After I turn the key to retart it, it runs OK again.
> > >
> > > I doubt it's the Idle Air Control (IAC) valve's problem. But I don't
> > > understand why a restart makes the problem gone right away.
> > >
> > > Anybody has any idea?
> >
> >
> > Check:
> > 1) Coolant level in the RAD
> > 2) Check the cleanliness of the throttle body
> >
> >
> > --
> > TeGGeR®
> >
> > The Unofficial Honda/Acura FAQ
> > www.tegger.com/hondafaq/
>
> Same thing happens to my 92 civic dx. What does the coolant level and
> throttle body cleanliness have to do with this? I've cleaned the whole
> intake manifold and throttle body, replaced the PCV valve, cleaned the IACV
> and FITV, and it's still doing it even though the idle has stabilized a
> little (PCV was really dirty).
>
> It still dies from time to time.
>
> I know when I taking off, clutch half way depressed, in first, sometimes the
> "engine died" light shows and it's like the engine dies, but then it
> restarts and when I give it gas it continues smoothly. Do you think the
> clutch needs replacement and is causing this?

Bad launches can mean that the O2 sensor has failed or you're running
very rich while the ECU isn't using O2 sensor feedback.

 

The problem happens to me when I slow down, not take off.

The clutch was depressed all the way down to the bottom. So, I think it
shouldn't be a clutch problem.

 

In article <1114294145.080579.284740@f14g2000cwb.googlegroups .com>,
dgjybc@yahoo.com wrote:

> The problem happens to me when I slow down, not take off.
>
> The clutch was depressed all the way down to the bottom. So, I think it
> shouldn't be a clutch problem.

Oh, then it's probably the mechanical idle setting. If it's set too
low, the engine can stall when you push in the clutch. The electronic
idle control takes a moment to open so it won't catch rapidly falling
RPMs. My 97 Civic needed it adjusted when it started stumbling on
clutch depresses.

The clutch is easy enough to test. Shift into reverse very slowly and
listen for grinding.

 

TeGGeR® wrote:
> dgjybc@yahoo.com wrote in
> news:1114226239.073097.236680@l41g2000cwc.googlegr oups.com:
>
>
>>99 accord, manual, 5 spd.
>>
>>When I depressed the clutch, the RPM normally drops to 700 quickly,
>>which is good. But occasionally it drops to 100 or lower
>
>
>
>
> No, it drops to 500. Everybody thinks that bottom line is 100. It's 500.
>
>
>
>>and then rises
>>to 700 slowly. Sometimes, it's so slow that the engine stalls
>>(smoothly). After I turn the key to retart it, it runs OK again.
>>
>>I doubt it's the Idle Air Control (IAC) valve's problem. But I don't
>>understand why a restart makes the problem gone right away.
>>
>>Anybody has any idea?
>
>
>
> Check:
> 1) Coolant level in the RAD
> 2) Check the cleanliness of the throttle body
>
>
and in this vehicle, the ignition switch - a recall item.

 

Kevin,
If it's the idle setting, the prooblem should happen more frequently.
Right?
In my case, it just happens occasionally. I started to have this
problem about 6 months ago. The problem has been getting worse little
by little.

Jim,
My iginition switch was replaced by my dealer.

Thanks.

 

dgjybc@yahoo.com wrote:
> Kevin,
> If it's the idle setting, the prooblem should happen more frequently.
> Right?
> In my case, it just happens occasionally. I started to have this
> problem about 6 months ago. The problem has been getting worse little
> by little.

on my 98 civic, a bad O2 sensor gave me a check engine light, and it
would die at idle. if you have an older civic with the original sensor,
might be worth replacing.

 

"Kevin McMurtrie" <mcmurtri@dslextreme.com> wrote in message
news:mcmurtri-E0239C.13264523042005@corp-radius.supernews.com...
> In article <cKOdnaxdYqKwN_ffRVn-tQ@comcast.com>,
> "John" <welcomehowcome@hotmail.com> wrote:
>
> > "TeGGeR®" <tegger@tegger.c0m> wrote in message
> > news:Xns96411437D88Etegger@207.14.113.17...
> > > dgjybc@yahoo.com wrote in
> > > news:1114226239.073097.236680@l41g2000cwc.googlegr oups.com:
> > >
> > > > 99 accord, manual, 5 spd.
> > > >
> > > > When I depressed the clutch, the RPM normally drops to 700 quickly,
> > > > which is good. But occasionally it drops to 100 or lower
> > >
> > >
> > >
> > > No, it drops to 500. Everybody thinks that bottom line is 100. It's
500.
> > >
> > >
> > > > and then rises
> > > > to 700 slowly. Sometimes, it's so slow that the engine stalls
> > > > (smoothly). After I turn the key to retart it, it runs OK again.
> > > >
> > > > I doubt it's the Idle Air Control (IAC) valve's problem. But I don't
> > > > understand why a restart makes the problem gone right away.
> > > >
> > > > Anybody has any idea?
> > >
> > >
> > > Check:
> > > 1) Coolant level in the RAD
> > > 2) Check the cleanliness of the throttle body
> > >
> > >
> > > --
> > > TeGGeR®
> > >
> > > The Unofficial Honda/Acura FAQ
> > > www.tegger.com/hondafaq/
> >
> > Same thing happens to my 92 civic dx. What does the coolant level and
> > throttle body cleanliness have to do with this? I've cleaned the whole
> > intake manifold and throttle body, replaced the PCV valve, cleaned the
IACV
> > and FITV, and it's still doing it even though the idle has stabilized a
> > little (PCV was really dirty).
> >
> > It still dies from time to time.
> >
> > I know when I taking off, clutch half way depressed, in first, sometimes
the
> > "engine died" light shows and it's like the engine dies, but then it
> > restarts and when I give it gas it continues smoothly. Do you think the
> > clutch needs replacement and is causing this?
>
> Bad launches can mean that the O2 sensor has failed or you're running
> very rich while the ECU isn't using O2 sensor feedback.

Well, it doesn't die completely. It's like the clutch catches on but then
I'm thinking there's not enough power to go on and the dead engine light
shows, so I immediately give it gas, and it returns back to running.

I'm thinking the stalling (as the OP mentioned) and this problem on lunch
are two separate issues--I'm concerned about both.

 

"Kevin McMurtrie" <mcmurtri@dslextreme.com> wrote in message
news:mcmurtri-027857.19330823042005@corp-radius.supernews.com...
> In article <1114294145.080579.284740@f14g2000cwb.googlegroups .com>,
> dgjybc@yahoo.com wrote:
>
> > The problem happens to me when I slow down, not take off.
> >
> > The clutch was depressed all the way down to the bottom. So, I think it
> > shouldn't be a clutch problem.
>
> Oh, then it's probably the mechanical idle setting. If it's set too
> low, the engine can stall when you push in the clutch. The electronic
> idle control takes a moment to open so it won't catch rapidly falling
> RPMs. My 97 Civic needed it adjusted when it started stumbling on
> clutch depresses.
>
> The clutch is easy enough to test. Shift into reverse very slowly and
> listen for grinding.

You mean the idle adjustment screw?

 

"SoCalMike" <mikein562athotmail@hotmail.com> wrote in message
news:Z6Odndt3FsUh0vbfRVn-pg@comcast.com...
> dgjybc@yahoo.com wrote:
> > Kevin,
> > If it's the idle setting, the prooblem should happen more frequently.
> > Right?
> > In my case, it just happens occasionally. I started to have this
> > problem about 6 months ago. The problem has been getting worse little
> > by little.
>
> on my 98 civic, a bad O2 sensor gave me a check engine light, and it
> would die at idle. if you have an older civic with the original sensor,
> might be worth replacing.

The thing is the light goes off, and the engine restarts if I press gas
right away (as soon as I see/feel that the engine is dying).