2003 Wrangler 4.0L - gas mileage
 

I was wondering whether anybody has tried the K&N air filter or a
throttle body spacer to achieve better gas mileage with their late model
Wrangler 4.0L engine?

I'm not too upset about the gas mileage I am getting, but if either or
both of the devices mentioned above actually work, I'd probably go for
the investment.

Anybody have accurate before/after stats on either device?

- thanks

Tom

Re: 2003 Wrangler 4.0L - gas mileage
 

thomas did pass the time by typing:
> I was wondering whether anybody has tried the
> K&N air filter

Some like it, some don't. If you keep it clean and oiled
properly it probably works. But some have said it lets
dust in that stock filters don't.

> or a throttle body spacer

TB spacers are utter garbage and so are the "Air Tornado" things.

> to achieve better gas mileage with their late model
> Wrangler 4.0L engine?

The best way is to use the lowest octane fuel you can that
doesn't knock, and keep a light right foot. The rest is
anticipating traffic so you don't use the brakes much.

That and driving something more aerodynamic than your
average brick. :)

--
DougW

Re: 2003 Wrangler 4.0L - gas mileage
 

thomas did pass the time by typing:
> I was wondering whether anybody has tried the
> K&N air filter

Some like it, some don't. If you keep it clean and oiled
properly it probably works. But some have said it lets
dust in that stock filters don't.

> or a throttle body spacer

TB spacers are utter garbage and so are the "Air Tornado" things.

> to achieve better gas mileage with their late model
> Wrangler 4.0L engine?

The best way is to use the lowest octane fuel you can that
doesn't knock, and keep a light right foot. The rest is
anticipating traffic so you don't use the brakes much.

That and driving something more aerodynamic than your
average brick. :)

--
DougW

Re: 2003 Wrangler 4.0L - gas mileage
 

thomas did pass the time by typing:
> I was wondering whether anybody has tried the
> K&N air filter

Some like it, some don't. If you keep it clean and oiled
properly it probably works. But some have said it lets
dust in that stock filters don't.

> or a throttle body spacer

TB spacers are utter garbage and so are the "Air Tornado" things.

> to achieve better gas mileage with their late model
> Wrangler 4.0L engine?

The best way is to use the lowest octane fuel you can that
doesn't knock, and keep a light right foot. The rest is
anticipating traffic so you don't use the brakes much.

That and driving something more aerodynamic than your
average brick. :)

--
DougW

Re: 2003 Wrangler 4.0L - gas mileage
 

I ran the K&N drop in replacement filter for a while... no difference
whatsoever that I noticed. As for throttle body spacers, I think most
will tell you that they are nothing more than 'snake oil' on a Jeep,
and not worth your time or money.

Dave
http://mysite.verizon.net/res0p2es/david/index.htm

On Tue, 02 Dec 2003 01:03:57 GMT, thomas <nospamforme@nicetry.com>
wrote:

>I was wondering whether anybody has tried the K&N air filter or a
>throttle body spacer to achieve better gas mileage with their late model
>Wrangler 4.0L engine?
>
>I'm not too upset about the gas mileage I am getting, but if either or
>both of the devices mentioned above actually work, I'd probably go for
>the investment.
>
>Anybody have accurate before/after stats on either device?
>
>- thanks
>
>Tom

Re: 2003 Wrangler 4.0L - gas mileage
 

I ran the K&N drop in replacement filter for a while... no difference
whatsoever that I noticed. As for throttle body spacers, I think most
will tell you that they are nothing more than 'snake oil' on a Jeep,
and not worth your time or money.

Dave
http://mysite.verizon.net/res0p2es/david/index.htm

On Tue, 02 Dec 2003 01:03:57 GMT, thomas <nospamforme@nicetry.com>
wrote:

>I was wondering whether anybody has tried the K&N air filter or a
>throttle body spacer to achieve better gas mileage with their late model
>Wrangler 4.0L engine?
>
>I'm not too upset about the gas mileage I am getting, but if either or
>both of the devices mentioned above actually work, I'd probably go for
>the investment.
>
>Anybody have accurate before/after stats on either device?
>
>- thanks
>
>Tom

Re: 2003 Wrangler 4.0L - gas mileage
 

I ran the K&N drop in replacement filter for a while... no difference
whatsoever that I noticed. As for throttle body spacers, I think most
will tell you that they are nothing more than 'snake oil' on a Jeep,
and not worth your time or money.

Dave
http://mysite.verizon.net/res0p2es/david/index.htm

On Tue, 02 Dec 2003 01:03:57 GMT, thomas <nospamforme@nicetry.com>
wrote:

>I was wondering whether anybody has tried the K&N air filter or a
>throttle body spacer to achieve better gas mileage with their late model
>Wrangler 4.0L engine?
>
>I'm not too upset about the gas mileage I am getting, but if either or
>both of the devices mentioned above actually work, I'd probably go for
>the investment.
>
>Anybody have accurate before/after stats on either device?
>
>- thanks
>
>Tom

Re: 2003 Wrangler 4.0L - gas mileage
 

In article <1yRyb.9273$Cj4.6397@twister.socal.rr.com>,
thomas <nospamforme@nicetry.com> wrote:
>I was wondering whether anybody has tried the K&N air filter or a
>throttle body spacer to achieve better gas mileage with their late model
>Wrangler 4.0L engine?
>
>I'm not too upset about the gas mileage I am getting, but if either or
>both of the devices mentioned above actually work, I'd probably go for
>the investment.

It's probably the winter fuel too. This always produces less MPG. BTW,
what are you getting with your 2003 TJ for MPG?

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Re: 2003 Wrangler 4.0L - gas mileage
 

In article <1yRyb.9273$Cj4.6397@twister.socal.rr.com>,
thomas <nospamforme@nicetry.com> wrote:
>I was wondering whether anybody has tried the K&N air filter or a
>throttle body spacer to achieve better gas mileage with their late model
>Wrangler 4.0L engine?
>
>I'm not too upset about the gas mileage I am getting, but if either or
>both of the devices mentioned above actually work, I'd probably go for
>the investment.

It's probably the winter fuel too. This always produces less MPG. BTW,
what are you getting with your 2003 TJ for MPG?

--
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Re: 2003 Wrangler 4.0L - gas mileage
 

In article <1yRyb.9273$Cj4.6397@twister.socal.rr.com>,
thomas <nospamforme@nicetry.com> wrote:
>I was wondering whether anybody has tried the K&N air filter or a
>throttle body spacer to achieve better gas mileage with their late model
>Wrangler 4.0L engine?
>
>I'm not too upset about the gas mileage I am getting, but if either or
>both of the devices mentioned above actually work, I'd probably go for
>the investment.

It's probably the winter fuel too. This always produces less MPG. BTW,
what are you getting with your 2003 TJ for MPG?

--
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Re: 2003 Wrangler 4.0L - gas mileage
 

My 03 Wrangler Freedom 4.0 5 Speed got 20 MPG the first tank, and is holding
its own. About what I expected as my 2.5 only got 24 MPG. Harry

Re: 2003 Wrangler 4.0L - gas mileage
 

My 03 Wrangler Freedom 4.0 5 Speed got 20 MPG the first tank, and is holding
its own. About what I expected as my 2.5 only got 24 MPG. Harry

Re: 2003 Wrangler 4.0L - gas mileage
 

My 03 Wrangler Freedom 4.0 5 Speed got 20 MPG the first tank, and is holding
its own. About what I expected as my 2.5 only got 24 MPG. Harry

Re: 2003 Wrangler 4.0L - gas mileage
 

In article <20031207095119.15210.00000403@mb-m04.news.cs.com>,
Sydcattledog <sydcattledog@cs.com> wrote:
>My 03 Wrangler Freedom 4.0 5 Speed got 20 MPG the first tank, and is holding
>its own. About what I expected as my 2.5 only got 24 MPG. Harry

My 1994 YJ got 21 MPG in July when I bought it. Now it might get 18 MPG with
the winterized fuel. 193000 miles but it needs a new coolant system parts
and the thermostat needs replacing. I don't want to do that until I get
a new radiator, hoses and clamps. The water pump is still working but I
will probably replace that too. Once that happens a new stat will build
up the pressure and the operating temp which will help the ECU work out
the mixture better.



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Re: 2003 Wrangler 4.0L - gas mileage
 

In article <20031207095119.15210.00000403@mb-m04.news.cs.com>,
Sydcattledog <sydcattledog@cs.com> wrote:
>My 03 Wrangler Freedom 4.0 5 Speed got 20 MPG the first tank, and is holding
>its own. About what I expected as my 2.5 only got 24 MPG. Harry

My 1994 YJ got 21 MPG in July when I bought it. Now it might get 18 MPG with
the winterized fuel. 193000 miles but it needs a new coolant system parts
and the thermostat needs replacing. I don't want to do that until I get
a new radiator, hoses and clamps. The water pump is still working but I
will probably replace that too. Once that happens a new stat will build
up the pressure and the operating temp which will help the ECU work out
the mixture better.



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Re: 2003 Wrangler 4.0L - gas mileage
 

In article <20031207095119.15210.00000403@mb-m04.news.cs.com>,
Sydcattledog <sydcattledog@cs.com> wrote:
>My 03 Wrangler Freedom 4.0 5 Speed got 20 MPG the first tank, and is holding
>its own. About what I expected as my 2.5 only got 24 MPG. Harry

My 1994 YJ got 21 MPG in July when I bought it. Now it might get 18 MPG with
the winterized fuel. 193000 miles but it needs a new coolant system parts
and the thermostat needs replacing. I don't want to do that until I get
a new radiator, hoses and clamps. The water pump is still working but I
will probably replace that too. Once that happens a new stat will build
up the pressure and the operating temp which will help the ECU work out
the mixture better.



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Re: 2003 Wrangler 4.0L - gas mileage
 

My '03 Sahara is seeing about 15mpg. Now, for the most part it drives 10
miles to work daily, barely gets warmed up in the process, and is driven
'aggressively'.

I've tried to do worse and I have not seen lower than 14.5mpg.

If I religiously shift when the idiot light tells me to and press the
pedal like it was an egg then I get 18mpg around town. But it's no fun
to drive that way.

Last- when it first got cold out I had to switch to 89 octane to prevent
pinging at wide-open-throttle on the highway. That resolved itself after
a couple of tanks and now I can run 87 again. Perhaps there were carbon
deposits or the computer had to learn about oxygenated gas?

Peter Parker wrote:

> In article <1yRyb.9273$Cj4.6397@twister.socal.rr.com>,
> thomas <nospamforme@nicetry.com> wrote:
>
>>I was wondering whether anybody has tried the K&N air filter or a
>>throttle body spacer to achieve better gas mileage with their late model
>>Wrangler 4.0L engine?
>>
>>I'm not too upset about the gas mileage I am getting, but if either or
>>both of the devices mentioned above actually work, I'd probably go for
>>the investment.
>
>
> It's probably the winter fuel too. This always produces less MPG. BTW,
> what are you getting with your 2003 TJ for MPG?
>

Re: 2003 Wrangler 4.0L - gas mileage
 

My '03 Sahara is seeing about 15mpg. Now, for the most part it drives 10
miles to work daily, barely gets warmed up in the process, and is driven
'aggressively'.

I've tried to do worse and I have not seen lower than 14.5mpg.

If I religiously shift when the idiot light tells me to and press the
pedal like it was an egg then I get 18mpg around town. But it's no fun
to drive that way.

Last- when it first got cold out I had to switch to 89 octane to prevent
pinging at wide-open-throttle on the highway. That resolved itself after
a couple of tanks and now I can run 87 again. Perhaps there were carbon
deposits or the computer had to learn about oxygenated gas?

Peter Parker wrote:

> In article <1yRyb.9273$Cj4.6397@twister.socal.rr.com>,
> thomas <nospamforme@nicetry.com> wrote:
>
>>I was wondering whether anybody has tried the K&N air filter or a
>>throttle body spacer to achieve better gas mileage with their late model
>>Wrangler 4.0L engine?
>>
>>I'm not too upset about the gas mileage I am getting, but if either or
>>both of the devices mentioned above actually work, I'd probably go for
>>the investment.
>
>
> It's probably the winter fuel too. This always produces less MPG. BTW,
> what are you getting with your 2003 TJ for MPG?
>

Re: 2003 Wrangler 4.0L - gas mileage
 

My '03 Sahara is seeing about 15mpg. Now, for the most part it drives 10
miles to work daily, barely gets warmed up in the process, and is driven
'aggressively'.

I've tried to do worse and I have not seen lower than 14.5mpg.

If I religiously shift when the idiot light tells me to and press the
pedal like it was an egg then I get 18mpg around town. But it's no fun
to drive that way.

Last- when it first got cold out I had to switch to 89 octane to prevent
pinging at wide-open-throttle on the highway. That resolved itself after
a couple of tanks and now I can run 87 again. Perhaps there were carbon
deposits or the computer had to learn about oxygenated gas?

Peter Parker wrote:

> In article <1yRyb.9273$Cj4.6397@twister.socal.rr.com>,
> thomas <nospamforme@nicetry.com> wrote:
>
>>I was wondering whether anybody has tried the K&N air filter or a
>>throttle body spacer to achieve better gas mileage with their late model
>>Wrangler 4.0L engine?
>>
>>I'm not too upset about the gas mileage I am getting, but if either or
>>both of the devices mentioned above actually work, I'd probably go for
>>the investment.
>
>
> It's probably the winter fuel too. This always produces less MPG. BTW,
> what are you getting with your 2003 TJ for MPG?
>

Re: 2003 Wrangler 4.0L - gas mileage
 

Barely gets warmed up, and driven 'aggressively'? That doesn't sound
like a recipe that will result in long vehicle life. :)

Dave
http://mysite.verizon.net/res0p2es/david/index.htm

On Sun, 07 Dec 2003 12:07:13 -0500, Tim Hayes
<thayes@remove-me.rutgers.edu> wrote:

>My '03 Sahara is seeing about 15mpg. Now, for the most part it drives 10
>miles to work daily, barely gets warmed up in the process, and is driven
>'aggressively'.

Re: 2003 Wrangler 4.0L - gas mileage
 

Barely gets warmed up, and driven 'aggressively'? That doesn't sound
like a recipe that will result in long vehicle life. :)

Dave
http://mysite.verizon.net/res0p2es/david/index.htm

On Sun, 07 Dec 2003 12:07:13 -0500, Tim Hayes
<thayes@remove-me.rutgers.edu> wrote:

>My '03 Sahara is seeing about 15mpg. Now, for the most part it drives 10
>miles to work daily, barely gets warmed up in the process, and is driven
>'aggressively'.

Re: 2003 Wrangler 4.0L - gas mileage
 

Barely gets warmed up, and driven 'aggressively'? That doesn't sound
like a recipe that will result in long vehicle life. :)

Dave
http://mysite.verizon.net/res0p2es/david/index.htm

On Sun, 07 Dec 2003 12:07:13 -0500, Tim Hayes
<thayes@remove-me.rutgers.edu> wrote:

>My '03 Sahara is seeing about 15mpg. Now, for the most part it drives 10
>miles to work daily, barely gets warmed up in the process, and is driven
>'aggressively'.

Re: 2003 Wrangler 4.0L - gas mileage
 

In article <3fd35e42@rutgers.edu>,
Tim Hayes <thayes@remove-me.rutgers.edu> wrote:
>My '03 Sahara is seeing about 15mpg. Now, for the most part it drives 10
>miles to work daily, barely gets warmed up in the process, and is driven
>'aggressively'.

10 miles should give you enough time to warm up.

>I've tried to do worse and I have not seen lower than 14.5mpg.

This sounds about right if you beat it.

>If I religiously shift when the idiot light tells me to and press the
>pedal like it was an egg then I get 18mpg around town. But it's no fun
>to drive that way.

Not really. Why do you have to shift so often? Sounds to me like you
are doing city driving and not highway. That's probably your problem.

>
>Last- when it first got cold out I had to switch to 89 octane to prevent
>pinging at wide-open-throttle on the highway. That resolved itself after
>a couple of tanks and now I can run 87 again. Perhaps there were carbon
>deposits or the computer had to learn about oxygenated gas?

My conclusion is that you are getting exactly what city driving is
supposed to give you.

I have my old 1994 window sticker here and it says City 16 and Hwy 18.
13 to 19 City and 15 to 21 Highway depending on your location and
driving habits.

>
>Peter Parker wrote:
>
>> In article <1yRyb.9273$Cj4.6397@twister.socal.rr.com>,
>> thomas <nospamforme@nicetry.com> wrote:
>>
>>>I was wondering whether anybody has tried the K&N air filter or a
>>>throttle body spacer to achieve better gas mileage with their late model
>>>Wrangler 4.0L engine?
>>>
>>>I'm not too upset about the gas mileage I am getting, but if either or
>>>both of the devices mentioned above actually work, I'd probably go for
>>>the investment.
>>
>>
>> It's probably the winter fuel too. This always produces less MPG. BTW,
>> what are you getting with your 2003 TJ for MPG?
>>
>


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Re: 2003 Wrangler 4.0L - gas mileage
 

In article <3fd35e42@rutgers.edu>,
Tim Hayes <thayes@remove-me.rutgers.edu> wrote:
>My '03 Sahara is seeing about 15mpg. Now, for the most part it drives 10
>miles to work daily, barely gets warmed up in the process, and is driven
>'aggressively'.

10 miles should give you enough time to warm up.

>I've tried to do worse and I have not seen lower than 14.5mpg.

This sounds about right if you beat it.

>If I religiously shift when the idiot light tells me to and press the
>pedal like it was an egg then I get 18mpg around town. But it's no fun
>to drive that way.

Not really. Why do you have to shift so often? Sounds to me like you
are doing city driving and not highway. That's probably your problem.

>
>Last- when it first got cold out I had to switch to 89 octane to prevent
>pinging at wide-open-throttle on the highway. That resolved itself after
>a couple of tanks and now I can run 87 again. Perhaps there were carbon
>deposits or the computer had to learn about oxygenated gas?

My conclusion is that you are getting exactly what city driving is
supposed to give you.

I have my old 1994 window sticker here and it says City 16 and Hwy 18.
13 to 19 City and 15 to 21 Highway depending on your location and
driving habits.

>
>Peter Parker wrote:
>
>> In article <1yRyb.9273$Cj4.6397@twister.socal.rr.com>,
>> thomas <nospamforme@nicetry.com> wrote:
>>
>>>I was wondering whether anybody has tried the K&N air filter or a
>>>throttle body spacer to achieve better gas mileage with their late model
>>>Wrangler 4.0L engine?
>>>
>>>I'm not too upset about the gas mileage I am getting, but if either or
>>>both of the devices mentioned above actually work, I'd probably go for
>>>the investment.
>>
>>
>> It's probably the winter fuel too. This always produces less MPG. BTW,
>> what are you getting with your 2003 TJ for MPG?
>>
>


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Re: 2003 Wrangler 4.0L - gas mileage
 

In article <3fd35e42@rutgers.edu>,
Tim Hayes <thayes@remove-me.rutgers.edu> wrote:
>My '03 Sahara is seeing about 15mpg. Now, for the most part it drives 10
>miles to work daily, barely gets warmed up in the process, and is driven
>'aggressively'.

10 miles should give you enough time to warm up.

>I've tried to do worse and I have not seen lower than 14.5mpg.

This sounds about right if you beat it.

>If I religiously shift when the idiot light tells me to and press the
>pedal like it was an egg then I get 18mpg around town. But it's no fun
>to drive that way.

Not really. Why do you have to shift so often? Sounds to me like you
are doing city driving and not highway. That's probably your problem.

>
>Last- when it first got cold out I had to switch to 89 octane to prevent
>pinging at wide-open-throttle on the highway. That resolved itself after
>a couple of tanks and now I can run 87 again. Perhaps there were carbon
>deposits or the computer had to learn about oxygenated gas?

My conclusion is that you are getting exactly what city driving is
supposed to give you.

I have my old 1994 window sticker here and it says City 16 and Hwy 18.
13 to 19 City and 15 to 21 Highway depending on your location and
driving habits.

>
>Peter Parker wrote:
>
>> In article <1yRyb.9273$Cj4.6397@twister.socal.rr.com>,
>> thomas <nospamforme@nicetry.com> wrote:
>>
>>>I was wondering whether anybody has tried the K&N air filter or a
>>>throttle body spacer to achieve better gas mileage with their late model
>>>Wrangler 4.0L engine?
>>>
>>>I'm not too upset about the gas mileage I am getting, but if either or
>>>both of the devices mentioned above actually work, I'd probably go for
>>>the investment.
>>
>>
>> It's probably the winter fuel too. This always produces less MPG. BTW,
>> what are you getting with your 2003 TJ for MPG?
>>
>


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