'04 running rich
#11
Guest
Posts: n/a
Re: '04 running rich
<kevin.dooks@ns.sympatico.ca> wrote in message
news:3tv653tadjqjj9g8ddf2tifm70jp151jh3@4ax.com...
> For those of you who like diagnosing strange problems I have a doozy
> for you.
>
> The symptoms are as follows: Very rich smelling exhaust, inside of
> tailpipe VERY thickly coated with soot, badly carboned plugs.
>
> I have checked the following: Manifold vacuum (20 ish in/Hg at idle in
> gear), done an aceytelene test around the intake and throttle-body
> gaskets/assemblys. The OBD system reports NO PROBLEMS, the mpg figures
> are all over the map over the past 2 months I have gotten from 14 to
> 33! mpg using the same brand/grade of fuel driving the same routes
> every week. I have made NO changes to the vehicle WHAT SO EVER.
>
I seriously doubt your Jeep can run rich and not throw an OBD II code as a
result. The O2 Sensor(s) are looking at the rich/lean condition, both before
and after the CAT.
#12
Guest
Posts: n/a
Re: '04 running rich
<kevin.dooks@ns.sympatico.ca> wrote in message
news:3tv653tadjqjj9g8ddf2tifm70jp151jh3@4ax.com...
> For those of you who like diagnosing strange problems I have a doozy
> for you.
>
> The symptoms are as follows: Very rich smelling exhaust, inside of
> tailpipe VERY thickly coated with soot, badly carboned plugs.
>
> I have checked the following: Manifold vacuum (20 ish in/Hg at idle in
> gear), done an aceytelene test around the intake and throttle-body
> gaskets/assemblys. The OBD system reports NO PROBLEMS, the mpg figures
> are all over the map over the past 2 months I have gotten from 14 to
> 33! mpg using the same brand/grade of fuel driving the same routes
> every week. I have made NO changes to the vehicle WHAT SO EVER.
>
I seriously doubt your Jeep can run rich and not throw an OBD II code as a
result. The O2 Sensor(s) are looking at the rich/lean condition, both before
and after the CAT.
#13
Guest
Posts: n/a
Re: '04 running rich
<kevin.dooks@ns.sympatico.ca> wrote in message
news:3tv653tadjqjj9g8ddf2tifm70jp151jh3@4ax.com...
> For those of you who like diagnosing strange problems I have a doozy
> for you.
>
> The symptoms are as follows: Very rich smelling exhaust, inside of
> tailpipe VERY thickly coated with soot, badly carboned plugs.
>
> I have checked the following: Manifold vacuum (20 ish in/Hg at idle in
> gear), done an aceytelene test around the intake and throttle-body
> gaskets/assemblys. The OBD system reports NO PROBLEMS, the mpg figures
> are all over the map over the past 2 months I have gotten from 14 to
> 33! mpg using the same brand/grade of fuel driving the same routes
> every week. I have made NO changes to the vehicle WHAT SO EVER.
>
I seriously doubt your Jeep can run rich and not throw an OBD II code as a
result. The O2 Sensor(s) are looking at the rich/lean condition, both before
and after the CAT.
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Simon Juncal
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12-26-2003 08:00 AM
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