Question for you all, I Bought my TJ in CA back in 01'. Back in Dec I
moved to Texas, and notice my jeep now pings under load when I put in
my normal reg. Gas (87 oct). This is the same gas I have used for the
entire life of the jeep.. so now I tried to put in mid grade (89 oct)
and it works just fine. Anyone have any ideas? Is there anything
that is on the TJ for CA Emissions that I might be able to tweak or
take off now that I am in Texas?

TIA
Kurt

 

You have already fixed the problem. There are fuel quality and additive
differences from state to state or region to region. There isn't anything
that you can adjust, but if everything on TJ is working correctly, it will
eventually learn to run on the cheaper gas.

I wouldn't do that. If you can hear the ping, imagine taking a hammer and
whacking the tops of your pistons on each upstroke. That is what ping is
doing, and no good comes from it.

Bottom line: if TJ likes mid-grade, feed her mid-grade.

Jerry


"Kurt Dorsey" <batlinsj@yahoo.com> wrote in message
news:eece3086.0403041448.50420dce@posting.google.c om...
> Question for you all, I Bought my TJ in CA back in 01'. Back in Dec I
> moved to Texas, and notice my jeep now pings under load when I put in
> my normal reg. Gas (87 oct). This is the same gas I have used for the
> entire life of the jeep.. so now I tried to put in mid grade (89 oct)
> and it works just fine. Anyone have any ideas? Is there anything
> that is on the TJ for CA Emissions that I might be able to tweak or
> take off now that I am in Texas?
>
> TIA
> Kurt

 

You have already fixed the problem. There are fuel quality and additive
differences from state to state or region to region. There isn't anything
that you can adjust, but if everything on TJ is working correctly, it will
eventually learn to run on the cheaper gas.

I wouldn't do that. If you can hear the ping, imagine taking a hammer and
whacking the tops of your pistons on each upstroke. That is what ping is
doing, and no good comes from it.

Bottom line: if TJ likes mid-grade, feed her mid-grade.

Jerry


"Kurt Dorsey" <batlinsj@yahoo.com> wrote in message
news:eece3086.0403041448.50420dce@posting.google.c om...
> Question for you all, I Bought my TJ in CA back in 01'. Back in Dec I
> moved to Texas, and notice my jeep now pings under load when I put in
> my normal reg. Gas (87 oct). This is the same gas I have used for the
> entire life of the jeep.. so now I tried to put in mid grade (89 oct)
> and it works just fine. Anyone have any ideas? Is there anything
> that is on the TJ for CA Emissions that I might be able to tweak or
> take off now that I am in Texas?
>
> TIA
> Kurt

 

You have already fixed the problem. There are fuel quality and additive
differences from state to state or region to region. There isn't anything
that you can adjust, but if everything on TJ is working correctly, it will
eventually learn to run on the cheaper gas.

I wouldn't do that. If you can hear the ping, imagine taking a hammer and
whacking the tops of your pistons on each upstroke. That is what ping is
doing, and no good comes from it.

Bottom line: if TJ likes mid-grade, feed her mid-grade.

Jerry


"Kurt Dorsey" <batlinsj@yahoo.com> wrote in message
news:eece3086.0403041448.50420dce@posting.google.c om...
> Question for you all, I Bought my TJ in CA back in 01'. Back in Dec I
> moved to Texas, and notice my jeep now pings under load when I put in
> my normal reg. Gas (87 oct). This is the same gas I have used for the
> entire life of the jeep.. so now I tried to put in mid grade (89 oct)
> and it works just fine. Anyone have any ideas? Is there anything
> that is on the TJ for CA Emissions that I might be able to tweak or
> take off now that I am in Texas?
>
> TIA
> Kurt

 

Are you at a differerent altitude?

Are you buying the same brand gas?

Check with your brand gasoline to find the additives it uses in each state.

 

Are you at a differerent altitude?

Are you buying the same brand gas?

Check with your brand gasoline to find the additives it uses in each state.

 

Are you at a differerent altitude?

Are you buying the same brand gas?

Check with your brand gasoline to find the additives it uses in each state.

 

On Thu, 4 Mar 2004 22:48:34 UTC batlinsj@yahoo.com (Kurt Dorsey)
wrote:

> Question for you all, I Bought my TJ in CA back in 01'. Back in Dec I
> moved to Texas, and notice my jeep now pings under load when I put in
> my normal reg. Gas (87 oct). This is the same gas I have used for the
> entire life of the jeep.. so now I tried to put in mid grade (89 oct)
> and it works just fine. Anyone have any ideas? Is there anything
> that is on the TJ for CA Emissions that I might be able to tweak or
> take off now that I am in Texas?

What part of Texas? Some parts sell 86 octane rather than 87 AIR. I
think some parts also use the oxygenated fuel (seems to me I saw that
in Dallas/FW last time I was down there in December) but There I'm not
sure. I know my old 88 4.0 sure does dislike the oxygenated crap.
You might also try a different brand or station for your gas.

Or it might be something as simple as blowing the carbon out - a 50
mile run dow I20 at 70-80 mph should do it (or a can of water thru the
intake - SLOWLY!

--
Will Honea <whonea@codenet.net>

 

On Thu, 4 Mar 2004 22:48:34 UTC batlinsj@yahoo.com (Kurt Dorsey)
wrote:

> Question for you all, I Bought my TJ in CA back in 01'. Back in Dec I
> moved to Texas, and notice my jeep now pings under load when I put in
> my normal reg. Gas (87 oct). This is the same gas I have used for the
> entire life of the jeep.. so now I tried to put in mid grade (89 oct)
> and it works just fine. Anyone have any ideas? Is there anything
> that is on the TJ for CA Emissions that I might be able to tweak or
> take off now that I am in Texas?

What part of Texas? Some parts sell 86 octane rather than 87 AIR. I
think some parts also use the oxygenated fuel (seems to me I saw that
in Dallas/FW last time I was down there in December) but There I'm not
sure. I know my old 88 4.0 sure does dislike the oxygenated crap.
You might also try a different brand or station for your gas.

Or it might be something as simple as blowing the carbon out - a 50
mile run dow I20 at 70-80 mph should do it (or a can of water thru the
intake - SLOWLY!

--
Will Honea <whonea@codenet.net>

 

On Thu, 4 Mar 2004 22:48:34 UTC batlinsj@yahoo.com (Kurt Dorsey)
wrote:

> Question for you all, I Bought my TJ in CA back in 01'. Back in Dec I
> moved to Texas, and notice my jeep now pings under load when I put in
> my normal reg. Gas (87 oct). This is the same gas I have used for the
> entire life of the jeep.. so now I tried to put in mid grade (89 oct)
> and it works just fine. Anyone have any ideas? Is there anything
> that is on the TJ for CA Emissions that I might be able to tweak or
> take off now that I am in Texas?

What part of Texas? Some parts sell 86 octane rather than 87 AIR. I
think some parts also use the oxygenated fuel (seems to me I saw that
in Dallas/FW last time I was down there in December) but There I'm not
sure. I know my old 88 4.0 sure does dislike the oxygenated crap.
You might also try a different brand or station for your gas.

Or it might be something as simple as blowing the carbon out - a 50
mile run dow I20 at 70-80 mph should do it (or a can of water thru the
intake - SLOWLY!

--
Will Honea <whonea@codenet.net>