I finally put my TJ back on the road about 6 months ago. It had been
sitting in my back yard for about 2+ years. There are a couple of
problems i'd like to throw out to the group.
1.) it dosn't have much power (yea, i know it's a 2.5, but my 2.5 YJ
had a lot more power)
2.) mileage sux (yea, i know it's a mailbox on wheels, but still) i
get about 16 mpg on the highway.
3.) this ones trickyer. between 2000 and 2100 rpm if there's any load
at all (maybe a slight hill) and I try to accelerate, it feels like
i'm running out of gas, or like i'm missing 2 cylinders. lots of
bucking and fighting. as soon as I hit 2100 rpm it's fine, like I hit
a switch. the guy at the shop says I just need to downshift, and it's
just bogging down, but i've driven standards all my life and i know
what bogging down is, and this isn't that.
4.) after sitting a while, like a day, it starts kinda hard. i've
been reading about the regulators and check valves and all that, and
it's definetly a pressure problem. i'm planning on getting a pressure
guage and checking all that out.
5.) CEL is on, computer shows an evap system failure. i've replaced
the gas cap, and cleared the code. comes back on, same code,
sometimes goes off on it's own, then eventually goes back on. seemes
like mileage is much better when the light is off.

ok, those were more than a couple problems. it seems to me that
everything, even maybe #3 , is fuel system related. and the jeep did
sit for a couple of years. i'm planning on pulling the fuel tank and
taking a look.
anyone have any idea's of some specifics i can test (and how to test
it) or any other wisdom?

-Zenophryk

 

On 22 May 2007 09:55:48 -0700, chrism@bostonmagazine.com wrote:

>I finally put my TJ back on the road about 6 months ago. It had been
>sitting in my back yard for about 2+ years. There are a couple of
>problems i'd like to throw out to the group.
>1.) it dosn't have much power (yea, i know it's a 2.5, but my 2.5 YJ
>had a lot more power)

I run my wifes Cherokee on at least 89 octane all the time and it is
noticablly smoother and has a bit more pep.

>2.) mileage sux (yea, i know it's a mailbox on wheels, but still) i
>get about 16 mpg on the highway.

This sounds a bit low but them also if it is lifted and has big
agressive tires MPG will suffer especailly if stock gearing is
retained. My wife 2000 Cherokee with same engine and 5 speed does in
high reens to around 20 in a urban driving with A/C in warmer weather
but it is bone stock too.

>3.) this ones trickyer. between 2000 and 2100 rpm if there's any load
>at all (maybe a slight hill) and I try to accelerate, it feels like
>i'm running out of gas, or like i'm missing 2 cylinders. lots of
>bucking and fighting. as soon as I hit 2100 rpm it's fine, like I hit
>a switch. the guy at the shop says I just need to downshift, and it's
>just bogging down, but i've driven standards all my life and i know
>what bogging down is, and this isn't that.

This seems to be a quirk with the engine and emissions controls as
there is a RPM rpm that it feels funny at times but is fine above or
below it. My wifes has done this more or less since it was new.

>4.) after sitting a while, like a day, it starts kinda hard. i've
>been reading about the regulators and check valves and all that, and
>it's definetly a pressure problem. i'm planning on getting a pressure
>guage and checking all that out.

Might check fuel filter and fuel pressure and maybe CPS (Crank
Position Sensor) as when they get weak they can cause hard starting at
times and eventaully complete failure.


>5.) CEL is on, computer shows an evap system failure. i've replaced
>the gas cap, and cleared the code. comes back on, same code,
>sometimes goes off on it's own, then eventually goes back on. seemes
>like mileage is much better when the light is off.

Cannot help you here at the moment.
>
>ok, those were more than a couple problems. it seems to me that
>everything, even maybe #3 , is fuel system related. and the jeep did
>sit for a couple of years. i'm planning on pulling the fuel tank and
>taking a look.
>anyone have any idea's of some specifics i can test (and how to test
>it) or any other wisdom?
>
>-Zenophryk
-----------------
TheSnoMan.com

 

On 22 May 2007 09:55:48 -0700, chrism@bostonmagazine.com wrote:

>I finally put my TJ back on the road about 6 months ago. It had been
>sitting in my back yard for about 2+ years. There are a couple of
>problems i'd like to throw out to the group.
>1.) it dosn't have much power (yea, i know it's a 2.5, but my 2.5 YJ
>had a lot more power)

I run my wifes Cherokee on at least 89 octane all the time and it is
noticablly smoother and has a bit more pep.

>2.) mileage sux (yea, i know it's a mailbox on wheels, but still) i
>get about 16 mpg on the highway.

This sounds a bit low but them also if it is lifted and has big
agressive tires MPG will suffer especailly if stock gearing is
retained. My wife 2000 Cherokee with same engine and 5 speed does in
high reens to around 20 in a urban driving with A/C in warmer weather
but it is bone stock too.

>3.) this ones trickyer. between 2000 and 2100 rpm if there's any load
>at all (maybe a slight hill) and I try to accelerate, it feels like
>i'm running out of gas, or like i'm missing 2 cylinders. lots of
>bucking and fighting. as soon as I hit 2100 rpm it's fine, like I hit
>a switch. the guy at the shop says I just need to downshift, and it's
>just bogging down, but i've driven standards all my life and i know
>what bogging down is, and this isn't that.

This seems to be a quirk with the engine and emissions controls as
there is a RPM rpm that it feels funny at times but is fine above or
below it. My wifes has done this more or less since it was new.

>4.) after sitting a while, like a day, it starts kinda hard. i've
>been reading about the regulators and check valves and all that, and
>it's definetly a pressure problem. i'm planning on getting a pressure
>guage and checking all that out.

Might check fuel filter and fuel pressure and maybe CPS (Crank
Position Sensor) as when they get weak they can cause hard starting at
times and eventaully complete failure.


>5.) CEL is on, computer shows an evap system failure. i've replaced
>the gas cap, and cleared the code. comes back on, same code,
>sometimes goes off on it's own, then eventually goes back on. seemes
>like mileage is much better when the light is off.

Cannot help you here at the moment.
>
>ok, those were more than a couple problems. it seems to me that
>everything, even maybe #3 , is fuel system related. and the jeep did
>sit for a couple of years. i'm planning on pulling the fuel tank and
>taking a look.
>anyone have any idea's of some specifics i can test (and how to test
>it) or any other wisdom?
>
>-Zenophryk
-----------------
TheSnoMan.com

 

On 22 May 2007 09:55:48 -0700, chrism@bostonmagazine.com wrote:

>I finally put my TJ back on the road about 6 months ago. It had been
>sitting in my back yard for about 2+ years. There are a couple of
>problems i'd like to throw out to the group.
>1.) it dosn't have much power (yea, i know it's a 2.5, but my 2.5 YJ
>had a lot more power)

I run my wifes Cherokee on at least 89 octane all the time and it is
noticablly smoother and has a bit more pep.

>2.) mileage sux (yea, i know it's a mailbox on wheels, but still) i
>get about 16 mpg on the highway.

This sounds a bit low but them also if it is lifted and has big
agressive tires MPG will suffer especailly if stock gearing is
retained. My wife 2000 Cherokee with same engine and 5 speed does in
high reens to around 20 in a urban driving with A/C in warmer weather
but it is bone stock too.

>3.) this ones trickyer. between 2000 and 2100 rpm if there's any load
>at all (maybe a slight hill) and I try to accelerate, it feels like
>i'm running out of gas, or like i'm missing 2 cylinders. lots of
>bucking and fighting. as soon as I hit 2100 rpm it's fine, like I hit
>a switch. the guy at the shop says I just need to downshift, and it's
>just bogging down, but i've driven standards all my life and i know
>what bogging down is, and this isn't that.

This seems to be a quirk with the engine and emissions controls as
there is a RPM rpm that it feels funny at times but is fine above or
below it. My wifes has done this more or less since it was new.

>4.) after sitting a while, like a day, it starts kinda hard. i've
>been reading about the regulators and check valves and all that, and
>it's definetly a pressure problem. i'm planning on getting a pressure
>guage and checking all that out.

Might check fuel filter and fuel pressure and maybe CPS (Crank
Position Sensor) as when they get weak they can cause hard starting at
times and eventaully complete failure.


>5.) CEL is on, computer shows an evap system failure. i've replaced
>the gas cap, and cleared the code. comes back on, same code,
>sometimes goes off on it's own, then eventually goes back on. seemes
>like mileage is much better when the light is off.

Cannot help you here at the moment.
>
>ok, those were more than a couple problems. it seems to me that
>everything, even maybe #3 , is fuel system related. and the jeep did
>sit for a couple of years. i'm planning on pulling the fuel tank and
>taking a look.
>anyone have any idea's of some specifics i can test (and how to test
>it) or any other wisdom?
>
>-Zenophryk
-----------------
TheSnoMan.com

 

On 22 May 2007 09:55:48 -0700, chrism@bostonmagazine.com wrote:

>I finally put my TJ back on the road about 6 months ago. It had been
>sitting in my back yard for about 2+ years. There are a couple of
>problems i'd like to throw out to the group.
>1.) it dosn't have much power (yea, i know it's a 2.5, but my 2.5 YJ
>had a lot more power)

I run my wifes Cherokee on at least 89 octane all the time and it is
noticablly smoother and has a bit more pep.

>2.) mileage sux (yea, i know it's a mailbox on wheels, but still) i
>get about 16 mpg on the highway.

This sounds a bit low but them also if it is lifted and has big
agressive tires MPG will suffer especailly if stock gearing is
retained. My wife 2000 Cherokee with same engine and 5 speed does in
high reens to around 20 in a urban driving with A/C in warmer weather
but it is bone stock too.

>3.) this ones trickyer. between 2000 and 2100 rpm if there's any load
>at all (maybe a slight hill) and I try to accelerate, it feels like
>i'm running out of gas, or like i'm missing 2 cylinders. lots of
>bucking and fighting. as soon as I hit 2100 rpm it's fine, like I hit
>a switch. the guy at the shop says I just need to downshift, and it's
>just bogging down, but i've driven standards all my life and i know
>what bogging down is, and this isn't that.

This seems to be a quirk with the engine and emissions controls as
there is a RPM rpm that it feels funny at times but is fine above or
below it. My wifes has done this more or less since it was new.

>4.) after sitting a while, like a day, it starts kinda hard. i've
>been reading about the regulators and check valves and all that, and
>it's definetly a pressure problem. i'm planning on getting a pressure
>guage and checking all that out.

Might check fuel filter and fuel pressure and maybe CPS (Crank
Position Sensor) as when they get weak they can cause hard starting at
times and eventaully complete failure.


>5.) CEL is on, computer shows an evap system failure. i've replaced
>the gas cap, and cleared the code. comes back on, same code,
>sometimes goes off on it's own, then eventually goes back on. seemes
>like mileage is much better when the light is off.

Cannot help you here at the moment.
>
>ok, those were more than a couple problems. it seems to me that
>everything, even maybe #3 , is fuel system related. and the jeep did
>sit for a couple of years. i'm planning on pulling the fuel tank and
>taking a look.
>anyone have any idea's of some specifics i can test (and how to test
>it) or any other wisdom?
>
>-Zenophryk
-----------------
TheSnoMan.com

 

needs a fuel pump

chrism@bostonmagazine.com wrote:

> I finally put my TJ back on the road about 6 months ago. It had been
> sitting in my back yard for about 2+ years. There are a couple of
> problems i'd like to throw out to the group.
> 1.) it dosn't have much power (yea, i know it's a 2.5, but my 2.5 YJ
> had a lot more power)
> 2.) mileage sux (yea, i know it's a mailbox on wheels, but still) i
> get about 16 mpg on the highway.
> 3.) this ones trickyer. between 2000 and 2100 rpm if there's any load
> at all (maybe a slight hill) and I try to accelerate, it feels like
> i'm running out of gas, or like i'm missing 2 cylinders. lots of
> bucking and fighting. as soon as I hit 2100 rpm it's fine, like I hit
> a switch. the guy at the shop says I just need to downshift, and it's
> just bogging down, but i've driven standards all my life and i know
> what bogging down is, and this isn't that.
> 4.) after sitting a while, like a day, it starts kinda hard. i've
> been reading about the regulators and check valves and all that, and
> it's definetly a pressure problem. i'm planning on getting a pressure
> guage and checking all that out.
> 5.) CEL is on, computer shows an evap system failure. i've replaced
> the gas cap, and cleared the code. comes back on, same code,
> sometimes goes off on it's own, then eventually goes back on. seemes
> like mileage is much better when the light is off.
>
> ok, those were more than a couple problems. it seems to me that
> everything, even maybe #3 , is fuel system related. and the jeep did
> sit for a couple of years. i'm planning on pulling the fuel tank and
> taking a look.
> anyone have any idea's of some specifics i can test (and how to test
> it) or any other wisdom?
>
> -Zenophryk

 

needs a fuel pump

chrism@bostonmagazine.com wrote:

> I finally put my TJ back on the road about 6 months ago. It had been
> sitting in my back yard for about 2+ years. There are a couple of
> problems i'd like to throw out to the group.
> 1.) it dosn't have much power (yea, i know it's a 2.5, but my 2.5 YJ
> had a lot more power)
> 2.) mileage sux (yea, i know it's a mailbox on wheels, but still) i
> get about 16 mpg on the highway.
> 3.) this ones trickyer. between 2000 and 2100 rpm if there's any load
> at all (maybe a slight hill) and I try to accelerate, it feels like
> i'm running out of gas, or like i'm missing 2 cylinders. lots of
> bucking and fighting. as soon as I hit 2100 rpm it's fine, like I hit
> a switch. the guy at the shop says I just need to downshift, and it's
> just bogging down, but i've driven standards all my life and i know
> what bogging down is, and this isn't that.
> 4.) after sitting a while, like a day, it starts kinda hard. i've
> been reading about the regulators and check valves and all that, and
> it's definetly a pressure problem. i'm planning on getting a pressure
> guage and checking all that out.
> 5.) CEL is on, computer shows an evap system failure. i've replaced
> the gas cap, and cleared the code. comes back on, same code,
> sometimes goes off on it's own, then eventually goes back on. seemes
> like mileage is much better when the light is off.
>
> ok, those were more than a couple problems. it seems to me that
> everything, even maybe #3 , is fuel system related. and the jeep did
> sit for a couple of years. i'm planning on pulling the fuel tank and
> taking a look.
> anyone have any idea's of some specifics i can test (and how to test
> it) or any other wisdom?
>
> -Zenophryk

 

needs a fuel pump

chrism@bostonmagazine.com wrote:

> I finally put my TJ back on the road about 6 months ago. It had been
> sitting in my back yard for about 2+ years. There are a couple of
> problems i'd like to throw out to the group.
> 1.) it dosn't have much power (yea, i know it's a 2.5, but my 2.5 YJ
> had a lot more power)
> 2.) mileage sux (yea, i know it's a mailbox on wheels, but still) i
> get about 16 mpg on the highway.
> 3.) this ones trickyer. between 2000 and 2100 rpm if there's any load
> at all (maybe a slight hill) and I try to accelerate, it feels like
> i'm running out of gas, or like i'm missing 2 cylinders. lots of
> bucking and fighting. as soon as I hit 2100 rpm it's fine, like I hit
> a switch. the guy at the shop says I just need to downshift, and it's
> just bogging down, but i've driven standards all my life and i know
> what bogging down is, and this isn't that.
> 4.) after sitting a while, like a day, it starts kinda hard. i've
> been reading about the regulators and check valves and all that, and
> it's definetly a pressure problem. i'm planning on getting a pressure
> guage and checking all that out.
> 5.) CEL is on, computer shows an evap system failure. i've replaced
> the gas cap, and cleared the code. comes back on, same code,
> sometimes goes off on it's own, then eventually goes back on. seemes
> like mileage is much better when the light is off.
>
> ok, those were more than a couple problems. it seems to me that
> everything, even maybe #3 , is fuel system related. and the jeep did
> sit for a couple of years. i'm planning on pulling the fuel tank and
> taking a look.
> anyone have any idea's of some specifics i can test (and how to test
> it) or any other wisdom?
>
> -Zenophryk

 

needs a fuel pump

chrism@bostonmagazine.com wrote:

> I finally put my TJ back on the road about 6 months ago. It had been
> sitting in my back yard for about 2+ years. There are a couple of
> problems i'd like to throw out to the group.
> 1.) it dosn't have much power (yea, i know it's a 2.5, but my 2.5 YJ
> had a lot more power)
> 2.) mileage sux (yea, i know it's a mailbox on wheels, but still) i
> get about 16 mpg on the highway.
> 3.) this ones trickyer. between 2000 and 2100 rpm if there's any load
> at all (maybe a slight hill) and I try to accelerate, it feels like
> i'm running out of gas, or like i'm missing 2 cylinders. lots of
> bucking and fighting. as soon as I hit 2100 rpm it's fine, like I hit
> a switch. the guy at the shop says I just need to downshift, and it's
> just bogging down, but i've driven standards all my life and i know
> what bogging down is, and this isn't that.
> 4.) after sitting a while, like a day, it starts kinda hard. i've
> been reading about the regulators and check valves and all that, and
> it's definetly a pressure problem. i'm planning on getting a pressure
> guage and checking all that out.
> 5.) CEL is on, computer shows an evap system failure. i've replaced
> the gas cap, and cleared the code. comes back on, same code,
> sometimes goes off on it's own, then eventually goes back on. seemes
> like mileage is much better when the light is off.
>
> ok, those were more than a couple problems. it seems to me that
> everything, even maybe #3 , is fuel system related. and the jeep did
> sit for a couple of years. i'm planning on pulling the fuel tank and
> taking a look.
> anyone have any idea's of some specifics i can test (and how to test
> it) or any other wisdom?
>
> -Zenophryk