Idle Problem
05-05-2004, 11:18 PM
#1
Guest
Posts: n/a
Idle Problem
Hi,
I have a 2000 Grand Cherokee Laredo w/ 4.7 V8. Sometimes when it is
idiling in park the engine will surge. The tach starts rising and
falling just below and just above 1,000 RPM. It doesn't do it all the
time and restarting will usually stop it for a while. I took it to the
dealer a few weeks ago and they said it was a dirty air filter. That
didn't stop it so before I spend more $$ does anyone have suggestions?
The Jeep has 68K miles.
Thanks for any help,
Brandon
I have a 2000 Grand Cherokee Laredo w/ 4.7 V8. Sometimes when it is
idiling in park the engine will surge. The tach starts rising and
falling just below and just above 1,000 RPM. It doesn't do it all the
time and restarting will usually stop it for a while. I took it to the
dealer a few weeks ago and they said it was a dirty air filter. That
didn't stop it so before I spend more $$ does anyone have suggestions?
The Jeep has 68K miles.
Thanks for any help,
Brandon
05-06-2004, 12:23 AM
#2
Guest
Posts: n/a
Re: Idle Problem
"Brandon" <jusomeguy2@yahoo.com> wrote in message
news:ba93099.0405051918.1d2e4e06@posting.google.co m...
> Hi,
>
> I have a 2000 Grand Cherokee Laredo w/ 4.7 V8. Sometimes when it is
> idiling in park the engine will surge. The tach starts rising and
> falling just below and just above 1,000 RPM. It doesn't do it all the
> time and restarting will usually stop it for a while. I took it to the
> dealer a few weeks ago and they said it was a dirty air filter. That
> didn't stop it so before I spend more $$ does anyone have suggestions?
> The Jeep has 68K miles.
>
> Thanks for any help,
> Brandon
Sounds like symptoms of an idle air control (IAC) valve, but it's just a
guess without testing it. Sometimes they just need a good cleaning. Maybe
someone else can confirm this for you.
Chris
05-06-2004, 12:23 AM
#3
Guest
Posts: n/a
Re: Idle Problem
"Brandon" <jusomeguy2@yahoo.com> wrote in message
news:ba93099.0405051918.1d2e4e06@posting.google.co m...
> Hi,
>
> I have a 2000 Grand Cherokee Laredo w/ 4.7 V8. Sometimes when it is
> idiling in park the engine will surge. The tach starts rising and
> falling just below and just above 1,000 RPM. It doesn't do it all the
> time and restarting will usually stop it for a while. I took it to the
> dealer a few weeks ago and they said it was a dirty air filter. That
> didn't stop it so before I spend more $$ does anyone have suggestions?
> The Jeep has 68K miles.
>
> Thanks for any help,
> Brandon
Sounds like symptoms of an idle air control (IAC) valve, but it's just a
guess without testing it. Sometimes they just need a good cleaning. Maybe
someone else can confirm this for you.
Chris
05-06-2004, 12:23 AM
#4
Guest
Posts: n/a
Re: Idle Problem
"Brandon" <jusomeguy2@yahoo.com> wrote in message
news:ba93099.0405051918.1d2e4e06@posting.google.co m...
> Hi,
>
> I have a 2000 Grand Cherokee Laredo w/ 4.7 V8. Sometimes when it is
> idiling in park the engine will surge. The tach starts rising and
> falling just below and just above 1,000 RPM. It doesn't do it all the
> time and restarting will usually stop it for a while. I took it to the
> dealer a few weeks ago and they said it was a dirty air filter. That
> didn't stop it so before I spend more $$ does anyone have suggestions?
> The Jeep has 68K miles.
>
> Thanks for any help,
> Brandon
Sounds like symptoms of an idle air control (IAC) valve, but it's just a
guess without testing it. Sometimes they just need a good cleaning. Maybe
someone else can confirm this for you.
Chris
05-06-2004, 12:23 AM
#5
Guest
Posts: n/a
Re: Idle Problem
"Brandon" <jusomeguy2@yahoo.com> wrote in message
news:ba93099.0405051918.1d2e4e06@posting.google.co m...
> Hi,
>
> I have a 2000 Grand Cherokee Laredo w/ 4.7 V8. Sometimes when it is
> idiling in park the engine will surge. The tach starts rising and
> falling just below and just above 1,000 RPM. It doesn't do it all the
> time and restarting will usually stop it for a while. I took it to the
> dealer a few weeks ago and they said it was a dirty air filter. That
> didn't stop it so before I spend more $$ does anyone have suggestions?
> The Jeep has 68K miles.
>
> Thanks for any help,
> Brandon
Sounds like symptoms of an idle air control (IAC) valve, but it's just a
guess without testing it. Sometimes they just need a good cleaning. Maybe
someone else can confirm this for you.
Chris
05-06-2004, 12:49 AM
#6
Guest
Posts: n/a
Re: Idle Problem
Maybe the throttle position sensor?
Brandon wrote:
> Hi,
>
> I have a 2000 Grand Cherokee Laredo w/ 4.7 V8. Sometimes when it is
> idiling in park the engine will surge. The tach starts rising and
> falling just below and just above 1,000 RPM. It doesn't do it all the
> time and restarting will usually stop it for a while. I took it to the
> dealer a few weeks ago and they said it was a dirty air filter. That
> didn't stop it so before I spend more $$ does anyone have suggestions?
> The Jeep has 68K miles.
>
> Thanks for any help,
> Brandon
Brandon wrote:
> Hi,
>
> I have a 2000 Grand Cherokee Laredo w/ 4.7 V8. Sometimes when it is
> idiling in park the engine will surge. The tach starts rising and
> falling just below and just above 1,000 RPM. It doesn't do it all the
> time and restarting will usually stop it for a while. I took it to the
> dealer a few weeks ago and they said it was a dirty air filter. That
> didn't stop it so before I spend more $$ does anyone have suggestions?
> The Jeep has 68K miles.
>
> Thanks for any help,
> Brandon
05-06-2004, 12:49 AM
#7
Guest
Posts: n/a
Re: Idle Problem
Maybe the throttle position sensor?
Brandon wrote:
> Hi,
>
> I have a 2000 Grand Cherokee Laredo w/ 4.7 V8. Sometimes when it is
> idiling in park the engine will surge. The tach starts rising and
> falling just below and just above 1,000 RPM. It doesn't do it all the
> time and restarting will usually stop it for a while. I took it to the
> dealer a few weeks ago and they said it was a dirty air filter. That
> didn't stop it so before I spend more $$ does anyone have suggestions?
> The Jeep has 68K miles.
>
> Thanks for any help,
> Brandon
Brandon wrote:
> Hi,
>
> I have a 2000 Grand Cherokee Laredo w/ 4.7 V8. Sometimes when it is
> idiling in park the engine will surge. The tach starts rising and
> falling just below and just above 1,000 RPM. It doesn't do it all the
> time and restarting will usually stop it for a while. I took it to the
> dealer a few weeks ago and they said it was a dirty air filter. That
> didn't stop it so before I spend more $$ does anyone have suggestions?
> The Jeep has 68K miles.
>
> Thanks for any help,
> Brandon
05-06-2004, 12:49 AM
#8
Guest
Posts: n/a
Re: Idle Problem
Maybe the throttle position sensor?
Brandon wrote:
> Hi,
>
> I have a 2000 Grand Cherokee Laredo w/ 4.7 V8. Sometimes when it is
> idiling in park the engine will surge. The tach starts rising and
> falling just below and just above 1,000 RPM. It doesn't do it all the
> time and restarting will usually stop it for a while. I took it to the
> dealer a few weeks ago and they said it was a dirty air filter. That
> didn't stop it so before I spend more $$ does anyone have suggestions?
> The Jeep has 68K miles.
>
> Thanks for any help,
> Brandon
Brandon wrote:
> Hi,
>
> I have a 2000 Grand Cherokee Laredo w/ 4.7 V8. Sometimes when it is
> idiling in park the engine will surge. The tach starts rising and
> falling just below and just above 1,000 RPM. It doesn't do it all the
> time and restarting will usually stop it for a while. I took it to the
> dealer a few weeks ago and they said it was a dirty air filter. That
> didn't stop it so before I spend more $$ does anyone have suggestions?
> The Jeep has 68K miles.
>
> Thanks for any help,
> Brandon
05-06-2004, 12:49 AM
#9
Guest
Posts: n/a
Re: Idle Problem
Maybe the throttle position sensor?
Brandon wrote:
> Hi,
>
> I have a 2000 Grand Cherokee Laredo w/ 4.7 V8. Sometimes when it is
> idiling in park the engine will surge. The tach starts rising and
> falling just below and just above 1,000 RPM. It doesn't do it all the
> time and restarting will usually stop it for a while. I took it to the
> dealer a few weeks ago and they said it was a dirty air filter. That
> didn't stop it so before I spend more $$ does anyone have suggestions?
> The Jeep has 68K miles.
>
> Thanks for any help,
> Brandon
Brandon wrote:
> Hi,
>
> I have a 2000 Grand Cherokee Laredo w/ 4.7 V8. Sometimes when it is
> idiling in park the engine will surge. The tach starts rising and
> falling just below and just above 1,000 RPM. It doesn't do it all the
> time and restarting will usually stop it for a while. I took it to the
> dealer a few weeks ago and they said it was a dirty air filter. That
> didn't stop it so before I spend more $$ does anyone have suggestions?
> The Jeep has 68K miles.
>
> Thanks for any help,
> Brandon
05-06-2004, 01:10 AM
#10
Guest
Posts: n/a
Re: Idle Problem
Classic spark plug misfire.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Brandon wrote:
>
> Hi,
>
> I have a 2000 Grand Cherokee Laredo w/ 4.7 V8. Sometimes when it is
> idiling in park the engine will surge. The tach starts rising and
> falling just below and just above 1,000 RPM. It doesn't do it all the
> time and restarting will usually stop it for a while. I took it to the
> dealer a few weeks ago and they said it was a dirty air filter. That
> didn't stop it so before I spend more $$ does anyone have suggestions?
> The Jeep has 68K miles.
>
> Thanks for any help,
> Brandon
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Brandon wrote:
>
> Hi,
>
> I have a 2000 Grand Cherokee Laredo w/ 4.7 V8. Sometimes when it is
> idiling in park the engine will surge. The tach starts rising and
> falling just below and just above 1,000 RPM. It doesn't do it all the
> time and restarting will usually stop it for a while. I took it to the
> dealer a few weeks ago and they said it was a dirty air filter. That
> didn't stop it so before I spend more $$ does anyone have suggestions?
> The Jeep has 68K miles.
>
> Thanks for any help,
> Brandon