revs while idling
 

Hi, All. I have a '94 Accord. When in park and idling, the engine revs up
and down with about once per second. rrrrrRRRRRRrrrrrrRRRRRRrrrrrrrRRRRRRR.
etc. Can't remember the RPMs, but at the peak, it's probably double the
normal idle RPMs.

What could the problem be?

Thanks,
Matt

--
Remove Xs from address to reply via e-mail.

Re: revs while idling
 

Matt Roos wrote:
>
> Hi, All. I have a '94 Accord. When in park and idling, the engine revs
> up and down with about once per second.
> rrrrrRRRRRRrrrrrrRRRRRRrrrrrrrRRRRRRR. etc. Can't remember the RPMs, but
> at the peak, it's probably double the normal idle RPMs.
>

This problem is often due to either low coolant, lack of coolant circulation
through certain valves/sensors, or trapped air in the coolant system.

You might want to read some of the prior threads where this problem has been
discussed before, for example http://tinyurl.com/3ac3w.

Eric

Re: revs while idling
 

Matt Roos wrote:
>
> Hi, All. I have a '94 Accord. When in park and idling, the engine revs
> up and down with about once per second.
> rrrrrRRRRRRrrrrrrRRRRRRrrrrrrrRRRRRRR. etc. Can't remember the RPMs, but
> at the peak, it's probably double the normal idle RPMs.
>

This problem is often due to either low coolant, lack of coolant circulation
through certain valves/sensors, or trapped air in the coolant system.

You might want to read some of the prior threads where this problem has been
discussed before, for example http://tinyurl.com/3ac3w.

Eric

Re: revs while idling
 

Matt Roos wrote:
>
> Hi, All. I have a '94 Accord. When in park and idling, the engine revs
> up and down with about once per second.
> rrrrrRRRRRRrrrrrrRRRRRRrrrrrrrRRRRRRR. etc. Can't remember the RPMs, but
> at the peak, it's probably double the normal idle RPMs.
>

This problem is often due to either low coolant, lack of coolant circulation
through certain valves/sensors, or trapped air in the coolant system.

You might want to read some of the prior threads where this problem has been
discussed before, for example http://tinyurl.com/3ac3w.

Eric

Re: revs while idling
 

Approx 3 weeks after changing the head gasket on my wife's '95 Civic, I also
had this problem and discovered that there is what appears to be vacuum line
attachment assembly (about 2.5 x 4 inches) behind the fuel intake (top of
engine, center, near the fire wall). Two 10mm bolts had backed out and was
causing this. 5 minutes later everything was good again.

hope this helps.
David

"Matt Roos" <XXmatt.roos@verizon.net> wrote in message
news:b2KZb.20208$wD5.7961@nwrddc03.gnilink.net...
> Hi, All. I have a '94 Accord. When in park and idling, the engine revs
up
> and down with about once per second.
rrrrrRRRRRRrrrrrrRRRRRRrrrrrrrRRRRRRR.
> etc. Can't remember the RPMs, but at the peak, it's probably double the
> normal idle RPMs.
>
> What could the problem be?
>
> Thanks,
> Matt
>
> --
> Remove Xs from address to reply via e-mail.
>
>

Re: revs while idling
 

Approx 3 weeks after changing the head gasket on my wife's '95 Civic, I also
had this problem and discovered that there is what appears to be vacuum line
attachment assembly (about 2.5 x 4 inches) behind the fuel intake (top of
engine, center, near the fire wall). Two 10mm bolts had backed out and was
causing this. 5 minutes later everything was good again.

hope this helps.
David

"Matt Roos" <XXmatt.roos@verizon.net> wrote in message
news:b2KZb.20208$wD5.7961@nwrddc03.gnilink.net...
> Hi, All. I have a '94 Accord. When in park and idling, the engine revs
up
> and down with about once per second.
rrrrrRRRRRRrrrrrrRRRRRRrrrrrrrRRRRRRR.
> etc. Can't remember the RPMs, but at the peak, it's probably double the
> normal idle RPMs.
>
> What could the problem be?
>
> Thanks,
> Matt
>
> --
> Remove Xs from address to reply via e-mail.
>
>

Re: revs while idling
 

Approx 3 weeks after changing the head gasket on my wife's '95 Civic, I also
had this problem and discovered that there is what appears to be vacuum line
attachment assembly (about 2.5 x 4 inches) behind the fuel intake (top of
engine, center, near the fire wall). Two 10mm bolts had backed out and was
causing this. 5 minutes later everything was good again.

hope this helps.
David

"Matt Roos" <XXmatt.roos@verizon.net> wrote in message
news:b2KZb.20208$wD5.7961@nwrddc03.gnilink.net...
> Hi, All. I have a '94 Accord. When in park and idling, the engine revs
up
> and down with about once per second.
rrrrrRRRRRRrrrrrrRRRRRRrrrrrrrRRRRRRR.
> etc. Can't remember the RPMs, but at the peak, it's probably double the
> normal idle RPMs.
>
> What could the problem be?
>
> Thanks,
> Matt
>
> --
> Remove Xs from address to reply via e-mail.
>
>

Re: revs while idling
 

Approx 3 weeks after changing the head gasket on my wife's '95 Civic I had
this problem develop as well. I discovered that the two 10mm bolts holding
the IAC (Idle Air Control) Valve on had backed out. 5 minutes later all was
good again. Oh yeah, this thing is located top center near the fire wall on
the air/fuel intake assembly. It's about 3 x 4.5 inches...

hope this helps...
David


"Matt Roos" <XXmatt.roos@verizon.net> wrote in message
news:b2KZb.20208$wD5.7961@nwrddc03.gnilink.net...
> Hi, All. I have a '94 Accord. When in park and idling, the engine revs
up
> and down with about once per second.
rrrrrRRRRRRrrrrrrRRRRRRrrrrrrrRRRRRRR.
> etc. Can't remember the RPMs, but at the peak, it's probably double the
> normal idle RPMs.
>
> What could the problem be?
>
> Thanks,
> Matt
>
> --
> Remove Xs from address to reply via e-mail.
>
>

Re: revs while idling
 

Approx 3 weeks after changing the head gasket on my wife's '95 Civic I had
this problem develop as well. I discovered that the two 10mm bolts holding
the IAC (Idle Air Control) Valve on had backed out. 5 minutes later all was
good again. Oh yeah, this thing is located top center near the fire wall on
the air/fuel intake assembly. It's about 3 x 4.5 inches...

hope this helps...
David


"Matt Roos" <XXmatt.roos@verizon.net> wrote in message
news:b2KZb.20208$wD5.7961@nwrddc03.gnilink.net...
> Hi, All. I have a '94 Accord. When in park and idling, the engine revs
up
> and down with about once per second.
rrrrrRRRRRRrrrrrrRRRRRRrrrrrrrRRRRRRR.
> etc. Can't remember the RPMs, but at the peak, it's probably double the
> normal idle RPMs.
>
> What could the problem be?
>
> Thanks,
> Matt
>
> --
> Remove Xs from address to reply via e-mail.
>
>

Re: revs while idling
 

Approx 3 weeks after changing the head gasket on my wife's '95 Civic I had
this problem develop as well. I discovered that the two 10mm bolts holding
the IAC (Idle Air Control) Valve on had backed out. 5 minutes later all was
good again. Oh yeah, this thing is located top center near the fire wall on
the air/fuel intake assembly. It's about 3 x 4.5 inches...

hope this helps...
David


"Matt Roos" <XXmatt.roos@verizon.net> wrote in message
news:b2KZb.20208$wD5.7961@nwrddc03.gnilink.net...
> Hi, All. I have a '94 Accord. When in park and idling, the engine revs
up
> and down with about once per second.
rrrrrRRRRRRrrrrrrRRRRRRrrrrrrrRRRRRRR.
> etc. Can't remember the RPMs, but at the peak, it's probably double the
> normal idle RPMs.
>
> What could the problem be?
>
> Thanks,
> Matt
>
> --
> Remove Xs from address to reply via e-mail.
>
>

Re: revs while idling
 

I second that idea about low coolant. My 97 accord did the same after
it lost all the coolant due to a leak in the Radiator.

On Sat, 21 Feb 2004 20:17:02 -0800, Eric <say.no@spam.now> wrote:

>Matt Roos wrote:
>>
>> Hi, All. I have a '94 Accord. When in park and idling, the engine revs
>> up and down with about once per second.
>> rrrrrRRRRRRrrrrrrRRRRRRrrrrrrrRRRRRRR. etc. Can't remember the RPMs, but
>> at the peak, it's probably double the normal idle RPMs.
>>
>
>This problem is often due to either low coolant, lack of coolant circulation
>through certain valves/sensors, or trapped air in the coolant system.
>
>You might want to read some of the prior threads where this problem has been
>discussed before, for example http://tinyurl.com/3ac3w.
>
>Eric

Re: revs while idling
 

I second that idea about low coolant. My 97 accord did the same after
it lost all the coolant due to a leak in the Radiator.

On Sat, 21 Feb 2004 20:17:02 -0800, Eric <say.no@spam.now> wrote:

>Matt Roos wrote:
>>
>> Hi, All. I have a '94 Accord. When in park and idling, the engine revs
>> up and down with about once per second.
>> rrrrrRRRRRRrrrrrrRRRRRRrrrrrrrRRRRRRR. etc. Can't remember the RPMs, but
>> at the peak, it's probably double the normal idle RPMs.
>>
>
>This problem is often due to either low coolant, lack of coolant circulation
>through certain valves/sensors, or trapped air in the coolant system.
>
>You might want to read some of the prior threads where this problem has been
>discussed before, for example http://tinyurl.com/3ac3w.
>
>Eric

Re: revs while idling
 

I second that idea about low coolant. My 97 accord did the same after
it lost all the coolant due to a leak in the Radiator.

On Sat, 21 Feb 2004 20:17:02 -0800, Eric <say.no@spam.now> wrote:

>Matt Roos wrote:
>>
>> Hi, All. I have a '94 Accord. When in park and idling, the engine revs
>> up and down with about once per second.
>> rrrrrRRRRRRrrrrrrRRRRRRrrrrrrrRRRRRRR. etc. Can't remember the RPMs, but
>> at the peak, it's probably double the normal idle RPMs.
>>
>
>This problem is often due to either low coolant, lack of coolant circulation
>through certain valves/sensors, or trapped air in the coolant system.
>
>You might want to read some of the prior threads where this problem has been
>discussed before, for example http://tinyurl.com/3ac3w.
>
>Eric

Re: revs while idling
 

I also have a '94 Accord EX Coupe 2.2vtec. Mine revs for about 10min before
it gets warmed up. And also if I give it gas just after starting it up on a
cold day it revs up then goes down to about 900 and back up to about 1500
really fast. Is that what you mean? Also, I have a question for you......How
warm does your heat get?
"Eric" <say.no@spam.now> wrote in message news:40382D3E.6ACC7CBA@spam.now...
> Matt Roos wrote:
> >
> > Hi, All. I have a '94 Accord. When in park and idling, the engine revs
> > up and down with about once per second.
> > rrrrrRRRRRRrrrrrrRRRRRRrrrrrrrRRRRRRR. etc. Can't remember the RPMs,
but
> > at the peak, it's probably double the normal idle RPMs.
> >
>
> This problem is often due to either low coolant, lack of coolant
circulation
> through certain valves/sensors, or trapped air in the coolant system.
>
> You might want to read some of the prior threads where this problem has
been
> discussed before, for example http://tinyurl.com/3ac3w.
>
> Eric

Re: revs while idling
 

I also have a '94 Accord EX Coupe 2.2vtec. Mine revs for about 10min before
it gets warmed up. And also if I give it gas just after starting it up on a
cold day it revs up then goes down to about 900 and back up to about 1500
really fast. Is that what you mean? Also, I have a question for you......How
warm does your heat get?
"Eric" <say.no@spam.now> wrote in message news:40382D3E.6ACC7CBA@spam.now...
> Matt Roos wrote:
> >
> > Hi, All. I have a '94 Accord. When in park and idling, the engine revs
> > up and down with about once per second.
> > rrrrrRRRRRRrrrrrrRRRRRRrrrrrrrRRRRRRR. etc. Can't remember the RPMs,
but
> > at the peak, it's probably double the normal idle RPMs.
> >
>
> This problem is often due to either low coolant, lack of coolant
circulation
> through certain valves/sensors, or trapped air in the coolant system.
>
> You might want to read some of the prior threads where this problem has
been
> discussed before, for example http://tinyurl.com/3ac3w.
>
> Eric