Jeep Erratic Idle
 

Hey Everyone,
I recently had a problem with my Jeep running very rich and not running
quite right. Well that was finally fixed last night when a hole in the
vacuum line to the M.A.P sensor was discovered. Went and started it up
for the first time since I fixed the vacuum line, and it fired up
quicker than normal and isn't running rich anymore, but now it has a
fluctuating idle. It will idle between 900 and 2,700 RPM now. If I
disconnect the M.A.P vacuum line, it goes back to how it used to be and
idles, but runs very richly. Does anyone know whats going on?
Thanks,
Gary

Re: Jeep Erratic Idle
 

You have another vacuum leak from those symptoms. Something like the
purge valve on the old style canister going bad would cause that or a
bad EGR.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

waterboy44@mail.com wrote:
>
> Hey Everyone,
> I recently had a problem with my Jeep running very rich and not running
> quite right. Well that was finally fixed last night when a hole in the
> vacuum line to the M.A.P sensor was discovered. Went and started it up
> for the first time since I fixed the vacuum line, and it fired up
> quicker than normal and isn't running rich anymore, but now it has a
> fluctuating idle. It will idle between 900 and 2,700 RPM now. If I
> disconnect the M.A.P vacuum line, it goes back to how it used to be and
> idles, but runs very richly. Does anyone know whats going on?
> Thanks,
> Gary

Re: Jeep Erratic Idle
 

You have another vacuum leak from those symptoms. Something like the
purge valve on the old style canister going bad would cause that or a
bad EGR.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

waterboy44@mail.com wrote:
>
> Hey Everyone,
> I recently had a problem with my Jeep running very rich and not running
> quite right. Well that was finally fixed last night when a hole in the
> vacuum line to the M.A.P sensor was discovered. Went and started it up
> for the first time since I fixed the vacuum line, and it fired up
> quicker than normal and isn't running rich anymore, but now it has a
> fluctuating idle. It will idle between 900 and 2,700 RPM now. If I
> disconnect the M.A.P vacuum line, it goes back to how it used to be and
> idles, but runs very richly. Does anyone know whats going on?
> Thanks,
> Gary

Re: Jeep Erratic Idle
 

You have another vacuum leak from those symptoms. Something like the
purge valve on the old style canister going bad would cause that or a
bad EGR.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

waterboy44@mail.com wrote:
>
> Hey Everyone,
> I recently had a problem with my Jeep running very rich and not running
> quite right. Well that was finally fixed last night when a hole in the
> vacuum line to the M.A.P sensor was discovered. Went and started it up
> for the first time since I fixed the vacuum line, and it fired up
> quicker than normal and isn't running rich anymore, but now it has a
> fluctuating idle. It will idle between 900 and 2,700 RPM now. If I
> disconnect the M.A.P vacuum line, it goes back to how it used to be and
> idles, but runs very richly. Does anyone know whats going on?
> Thanks,
> Gary

Re: Jeep Erratic Idle
 

You have another vacuum leak from those symptoms. Something like the
purge valve on the old style canister going bad would cause that or a
bad EGR.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

waterboy44@mail.com wrote:
>
> Hey Everyone,
> I recently had a problem with my Jeep running very rich and not running
> quite right. Well that was finally fixed last night when a hole in the
> vacuum line to the M.A.P sensor was discovered. Went and started it up
> for the first time since I fixed the vacuum line, and it fired up
> quicker than normal and isn't running rich anymore, but now it has a
> fluctuating idle. It will idle between 900 and 2,700 RPM now. If I
> disconnect the M.A.P vacuum line, it goes back to how it used to be and
> idles, but runs very richly. Does anyone know whats going on?
> Thanks,
> Gary

Re: Jeep Erratic Idle
 

I wonder how the 02 sensor is after getting hit with all of that rich
exhaust.

"Mike Romain" <romainm@sympatico.ca> wrote in message
news:42D3F836.5BD32C99@sympatico.ca...
> You have another vacuum leak from those symptoms. Something like the
> purge valve on the old style canister going bad would cause that or a
> bad EGR.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> waterboy44@mail.com wrote:
> >
> > Hey Everyone,
> > I recently had a problem with my Jeep running very rich and not running
> > quite right. Well that was finally fixed last night when a hole in the
> > vacuum line to the M.A.P sensor was discovered. Went and started it up
> > for the first time since I fixed the vacuum line, and it fired up
> > quicker than normal and isn't running rich anymore, but now it has a
> > fluctuating idle. It will idle between 900 and 2,700 RPM now. If I
> > disconnect the M.A.P vacuum line, it goes back to how it used to be and
> > idles, but runs very richly. Does anyone know whats going on?
> > Thanks,
> > Gary
>

Re: Jeep Erratic Idle
 

I wonder how the 02 sensor is after getting hit with all of that rich
exhaust.

"Mike Romain" <romainm@sympatico.ca> wrote in message
news:42D3F836.5BD32C99@sympatico.ca...
> You have another vacuum leak from those symptoms. Something like the
> purge valve on the old style canister going bad would cause that or a
> bad EGR.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> waterboy44@mail.com wrote:
> >
> > Hey Everyone,
> > I recently had a problem with my Jeep running very rich and not running
> > quite right. Well that was finally fixed last night when a hole in the
> > vacuum line to the M.A.P sensor was discovered. Went and started it up
> > for the first time since I fixed the vacuum line, and it fired up
> > quicker than normal and isn't running rich anymore, but now it has a
> > fluctuating idle. It will idle between 900 and 2,700 RPM now. If I
> > disconnect the M.A.P vacuum line, it goes back to how it used to be and
> > idles, but runs very richly. Does anyone know whats going on?
> > Thanks,
> > Gary
>

Re: Jeep Erratic Idle
 

I wonder how the 02 sensor is after getting hit with all of that rich
exhaust.

"Mike Romain" <romainm@sympatico.ca> wrote in message
news:42D3F836.5BD32C99@sympatico.ca...
> You have another vacuum leak from those symptoms. Something like the
> purge valve on the old style canister going bad would cause that or a
> bad EGR.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> waterboy44@mail.com wrote:
> >
> > Hey Everyone,
> > I recently had a problem with my Jeep running very rich and not running
> > quite right. Well that was finally fixed last night when a hole in the
> > vacuum line to the M.A.P sensor was discovered. Went and started it up
> > for the first time since I fixed the vacuum line, and it fired up
> > quicker than normal and isn't running rich anymore, but now it has a
> > fluctuating idle. It will idle between 900 and 2,700 RPM now. If I
> > disconnect the M.A.P vacuum line, it goes back to how it used to be and
> > idles, but runs very richly. Does anyone know whats going on?
> > Thanks,
> > Gary
>

Re: Jeep Erratic Idle
 

I wonder how the 02 sensor is after getting hit with all of that rich
exhaust.

"Mike Romain" <romainm@sympatico.ca> wrote in message
news:42D3F836.5BD32C99@sympatico.ca...
> You have another vacuum leak from those symptoms. Something like the
> purge valve on the old style canister going bad would cause that or a
> bad EGR.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> waterboy44@mail.com wrote:
> >
> > Hey Everyone,
> > I recently had a problem with my Jeep running very rich and not running
> > quite right. Well that was finally fixed last night when a hole in the
> > vacuum line to the M.A.P sensor was discovered. Went and started it up
> > for the first time since I fixed the vacuum line, and it fired up
> > quicker than normal and isn't running rich anymore, but now it has a
> > fluctuating idle. It will idle between 900 and 2,700 RPM now. If I
> > disconnect the M.A.P vacuum line, it goes back to how it used to be and
> > idles, but runs very richly. Does anyone know whats going on?
> > Thanks,
> > Gary
>