Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from 17.5MPG within 1 month.

Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from 17.5MPG within 1 month.

The weirdest thing has happened recently.
Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from
17.5MPG within 1 month.
Computer jumps back and fourth with MPG 19.5 then jump down to 13.5
then back up to 14.5..
and it's noticeably guzzling gas like crazy.
(Has 1000,000miles)
4.7lt, 2wd, V8

So far have;
Replaced all Sparks with E3
Cleaned Air filter
Put good gas cleaner in tank a few times now.
Use regular gas
Have take to Chrysler Dealer and they have no clue.
(Will call back tomorrow and ask why they didn't do a full Scan on it
when I had a 'full' check done on it.)
I checked the exhaust and there is a black grid out of it, maybe gas
running to rich? Sensors off? Fuel filter?


Any else have this or ideas?

Thanks so much..

Re: Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from 17.5MPG within 1 month.

Don't tell me, let me guess, you buy your auto parts at Cut Rate? YOur
hair blonde, too?
God Bless America, Bill O|||||||O
mailto:LWHughes3rd@aol,com http :// www .billhughes,com /


"wilsonb" <wilsonbradley@gmail,com > wrote in message
news:1190177824.393697.135360@n39g2000hsh.googlegroups,com ...
> The weirdest thing has happened recently.
> Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from
> 17.5MPG within 1 month.
> Computer jumps back and fourth with MPG 19.5 then jump down to 13.5
> then back up to 14.5..
> and it's noticeably guzzling gas like crazy.
> (Has 1000,000miles)
> 4.7lt, 2wd, V8
>
> So far have;
> Replaced all Sparks with E3
> Cleaned Air filter
> Put good gas cleaner in tank a few times now.
> Use regular gas
> Have take to Chrysler Dealer and they have no clue.
> (Will call back tomorrow and ask why they didn't do a full Scan on it
> when I had a 'full' check done on it.)
> I checked the exhaust and there is a black grid out of it, maybe gas
> running to rich? Sensors off? Fuel filter?
>
>
> Any else have this or ideas?
>
> Thanks so much..
>



--
Posted via a free Usenet account from http :// www .teranews,com

Re: Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from 17.5MPG within 1 month.

On Sep 19, 1:39 am, "L.W. \(Bill\) Hughes III"
<LWBillHug...@hughes,net > wrote:
> Don't tell me, let me guess, you buy your auto parts at Cut Rate? YOur
> hair blonde, too?
> God Bless America, Bill O|||||||O
> mailto:LWHughes...@aol,com http :// www .billhughes,com /
>
> "wilsonb" <wilsonbrad...@gmail,com > wrote in message
>

I guess so... because I don't get your useless response.

Re: Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from 17.5MPG within 1 month.

Then get the spark plugs your engine calls for. Champions!
God Bless America, Bill O|||||||O
mailto:LWHughes3rd@aol,com http :// www .billhughes,com /


"wilsonb" <wilsonbradley@gmail,com > wrote in message
news:1190220047.785492.290860@g4g2000hsf.googlegroups,com ...
>
> I guess so... because I don't get your useless response.
>



--
Posted via a free Usenet account from http :// www .teranews,com

Re: Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from 17.5MPG within 1 month.

L.W. (Bill) Hughes III wrote:
> Then get the spark plugs your engine calls for. Champions!

Champions are crappy spark plugs, Bill.

See Wilson, I told you everything Bill says is useless.

> God Bless America, Bill O|||||||O
> mailto:LWHughes3rd@aol,com http :// www .billhughes,com /
>
>
> "wilsonb" <wilsonbradley@gmail,com > wrote in message
> news:1190220047.785492.290860@g4g2000hsf.googlegroups,com ...
>> I guess so... because I don't get your useless response.
>>
>
>
>

Re: Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from 17.5MPG within 1 month.

wilsonb wrote:
> On Sep 19, 1:39 am, "L.W. \(Bill\) Hughes III"
> <LWBillHug...@hughes,net > wrote:
>> Don't tell me, let me guess, you buy your auto parts at Cut Rate? YOur
>> hair blonde, too?
>> God Bless America, Bill O|||||||O
>> mailto:LWHughes...@aol,com http :// www .billhughes,com /
>>
>> "wilsonb" <wilsonbrad...@gmail,com > wrote in message
>>
>
> I guess so... because I don't get your useless response.
>

You'll find that everything Bill says is useless. 99% of the newsgroup
has already killfilled him. You should, too, if you want to enjoy the
group without problems. Just disagree with him a couple of times and
watch him call you a queer or something; you'll see that I'm giving you
good advice here.

Re: Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from 17.5MPG within 1 month.

wilsonb wrote:
> The weirdest thing has happened recently.
> Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from
> 17.5MPG within 1 month.
> Computer jumps back and fourth with MPG 19.5 then jump down to 13.5
> then back up to 14.5..
> and it's noticeably guzzling gas like crazy.
> (Has 1000,000miles)
> 4.7lt, 2wd, V8
>
> So far have;
> Replaced all Sparks with E3
> Cleaned Air filter
> Put good gas cleaner in tank a few times now.
> Use regular gas
> Have take to Chrysler Dealer and they have no clue.
> (Will call back tomorrow and ask why they didn't do a full Scan on it
> when I had a 'full' check done on it.)
> I checked the exhaust and there is a black grid out of it, maybe gas
> running to rich? Sensors off? Fuel filter?
>
>
> Any else have this or ideas?

likely O2 sensor is starting to fail and causing
the engine to run rich.

Do you have kids are are they borrowing your Jeep? :)

Are you using the same gas station, and does your state
switch blends between summer and winter.

--
DougW

Re: Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from 17.5MPG within 1 month.

On Sep 19, 6:17 am, "DougW" <I.only.read.use...@invalid.address>
wrote:
> wilsonbwrote:
> > The weirdest thing has happened recently.
> > Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from
> > 17.5MPG within 1 month.
> > Computer jumps back and fourth with MPG 19.5 then jump down to 13.5
> > then back up to 14.5..
> > and it's noticeably guzzling gas like crazy.
> > (Has 1000,000miles)
> > 4.7lt, 2wd, V8
>
> > So far have;
> > Replaced all Sparks with E3
> > Cleaned Air filter
> > Put good gas cleaner in tank a few times now.
> > Use regular gas
> > Have take to Chrysler Dealer and they have no clue.
> > (Will call back tomorrow and ask why they didn't do a full Scan on it
> > when I had a 'full' check done on it.)
> > I checked the exhaust and there is a black grid out of it, maybe gas
> > running to rich? Sensors off? Fuel filter?
>
> > Any else have this or ideas?
>
> likely O2 sensor is starting to fail and causing
> the engine to run rich.
>
> Do you have kids are are they borrowing yourJeep? :)
>
> Are you using the same gas station, and does your state
> switch blends between summer and winter.
>
> --
> DougW

Thanks, I bought an expensive PDF repair manual for the Jeep. Will
look it up..

Thanks again for your input.

Re: Re: Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from 17.5MPG within 1 month.

On Wed, 19 Sep 2007 16:43:18 -0000, wilsonb <wilsonbradley@gmail,com >
wrote:

>On Sep 19, 6:17 am, "DougW" <I.only.read.use...@invalid.address>
>wrote:
>> wilsonbwrote:
>> > The weirdest thing has happened recently.
>> > Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from
>> > 17.5MPG within 1 month.
>> > Computer jumps back and fourth with MPG 19.5 then jump down to 13.5
>> > then back up to 14.5..
>> > and it's noticeably guzzling gas like crazy.
>> > (Has 1000,000miles)
>> > 4.7lt, 2wd, V8
>>
>> > So far have;
>> > Replaced all Sparks with E3
>> > Cleaned Air filter
>> > Put good gas cleaner in tank a few times now.
>> > Use regular gas
>> > Have take to Chrysler Dealer and they have no clue.
>> > (Will call back tomorrow and ask why they didn't do a full Scan on it
>> > when I had a 'full' check done on it.)
>> > I checked the exhaust and there is a black grid out of it, maybe gas
>> > running to rich? Sensors off? Fuel filter?
>>
>> > Any else have this or ideas?
>>
>> likely O2 sensor is starting to fail and causing
>> the engine to run rich.
>>
>> Do you have kids are are they borrowing yourJeep? :)
>>
>> Are you using the same gas station, and does your state
>> switch blends between summer and winter.
>>
>> --
>> DougW
>
>Thanks, I bought an expensive PDF repair manual for the Jeep. Will
>look it up..
>
>Thanks again for your input.


O2 is a possibilty. Might check ECTS (engine coolant temp sensor) as
it sets base line for mixture. Also my wifes 2000 Cherokee with a 4
banger and a stick runs noticably better, smoother and gets better MPG
too in warmer months with 89 or better octane fuel in it.
-----------------
TheSnoMan,com

Re: Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from 17.5MPG within 1 month.

On Wed, 19 Sep 2007 04:57:04 -0000, wilsonb <wilsonbradley@gmail,com >
wrote:

>The weirdest thing has happened recently.
>Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from
>17.5MPG within 1 month.
>Computer jumps back and fourth with MPG 19.5 then jump down to 13.5
>then back up to 14.5..
> and it's noticeably guzzling gas like crazy.
>(Has 1000,000miles)
>4.7lt, 2wd, V8
>
>So far have;
>Replaced all Sparks with E3
>Cleaned Air filter
>Put good gas cleaner in tank a few times now.
>Use regular gas
>Have take to Chrysler Dealer and they have no clue.
>(Will call back tomorrow and ask why they didn't do a full Scan on it
>when I had a 'full' check done on it.)
>I checked the exhaust and there is a black grid out of it, maybe gas
>running to rich? Sensors off? Fuel filter?
>
>
>Any else have this or ideas?
>
>Thanks so much..

i vote on the O2 sensors as well, i've had prior experience on 2
chrysler vehicles with the O2 sensors with exacttly the same symptoms.
poor fuel consumption (in a very short time), black inside the
tailpipe and black exhaust under WOT.

on one of these vehicles (where I had the problem w/in the first 20k
miles) it wasn't a bad sensor but the wires had been routed too close
to the exhaust manifold and burned through.

On your 4,7 these are pretty easy to get to but you need the special
socket (I got mine at Napa) to R&R. iirc there are three of these ...
one on each side ahead of the quick light-off cats and one more
downstream of the single main cat.

to my knowledge there isn't a good way to diagnose them as a
component, maybe the scan will tell you if you need to replace all
three, my guess is that at least the two upstream sensors should be
replaced.

reboot


---
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Tested on: 9/19/2007 9:45:51 PM
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Re: Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from 17.5MPG within 1 month.

"reboot" wrote ...

> to my knowledge there isn't a good way to diagnose them as a
> component, maybe the scan will tell you if you need to replace all
> three, my guess is that at least the two upstream sensors should be
> replaced.

Yea.. I forgot the clip on the side of the I6 is notorious for
pinching and melting the O2 sensor.

As for testing, you can do it with a torch and possibly with the DRB,
but there isn't any real good test for a lazy sensor.

while back I connected my scope to the sensor and pulled a few waveforms.
..and all I can find on my compooter is sparkplug waves... :(
bah. Wonder where I saved those...

--
DougW

Re: Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from 17.5MPG within 1 month.

On Wed, 19 Sep 2007 21:45:51 -0400, reboot <reboot@nothere,com > wrote:

>On Wed, 19 Sep 2007 04:57:04 -0000, wilsonb <wilsonbradley@gmail,com >
>wrote:
>
>>The weirdest thing has happened recently.
>>Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from
>>17.5MPG within 1 month.
>>Computer jumps back and fourth with MPG 19.5 then jump down to 13.5
>>then back up to 14.5..
>> and it's noticeably guzzling gas like crazy.
>>(Has 1000,000miles)
>>4.7lt, 2wd, V8
>>
>>So far have;
>>Replaced all Sparks with E3
>>Cleaned Air filter
>>Put good gas cleaner in tank a few times now.
>>Use regular gas
>>Have take to Chrysler Dealer and they have no clue.
>>(Will call back tomorrow and ask why they didn't do a full Scan on it
>>when I had a 'full' check done on it.)
>>I checked the exhaust and there is a black grid out of it, maybe gas
>>running to rich? Sensors off? Fuel filter?
>>
>>
>>Any else have this or ideas?
>>
>>Thanks so much..
>
>i vote on the O2 sensors as well, i've had prior experience on 2
>chrysler vehicles with the O2 sensors with exacttly the same symptoms.
>poor fuel consumption (in a very short time), black inside the
>tailpipe and black exhaust under WOT.
>
>on one of these vehicles (where I had the problem w/in the first 20k
>miles) it wasn't a bad sensor but the wires had been routed too close
>to the exhaust manifold and burned through.
>
>On your 4,7 these are pretty easy to get to but you need the special
>socket (I got mine at Napa) to R&R. iirc there are three of these ...
>one on each side ahead of the quick light-off cats and one more
>downstream of the single main cat.

1 O2 sensor upstream of each mini cat. 1 O2 sensor downstream of each
mini cat. There are 4 O2 sensors.

>
>to my knowledge there isn't a good way to diagnose them as a
>component, maybe the scan will tell you if you need to replace all
>three, my guess is that at least the two upstream sensors should be
>replaced.
>
>reboot
>
>
>---
>avast! Antivirus: Outbound message clean.
>Virus Database (VPS): 000775-3, 09/19/2007
>Tested on: 9/19/2007 9:45:51 PM
>avast! - copyright (c) 1988-2007 ALWIL Software.
> http :// www .avast,com
>
>

Re: Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from 17.5MPG within 1 month.

On Wed, 19 Sep 2007 23:06:22 -0700, "L.W. \(Bill\) Hughes III"
<LWBillHughes@hughes,net > wrote:


> I would have guessed a faggot like you would say not to use the factory
>recommendations: http :// www .billhughes,com /temp/SparkPlugs02WJ.pdf
> http :// www .rockauto,com /catalog/x,carcode,1381418,parttype,7212
> You jealous little coward.
> Bless America, Bill O|||||||O
>mailto:LWHughes3rd@aol,com

Yeah you're right, your whole f*ck'en life has been one guess after
another. Exactly why you have nothing, and at this point never will.
Sell some of the junk in your garage for beer money, and number ONE,
that BlunderBird, so your wife can raise some flowers with the extra
room.
>
>
>"Some Guy" <noemailformethanks@anyplace.invalid> wrote in message
>news:QemIi.101283$Mu5.7435@newsfe15.phx...
>>
>> Champions are crappy spark plugs, Bill.
>>
>> See Wilson, I told you everything Bill says is useless.

Recipe for a Psychopath:

Emotional & Interpersonal
Glib & Superficial
Egocentric & Grandiose
Lack of Remorse or Guilt
Lack of Empathy
Deceitful & Manipulative
Shallow Emotions
Social Deviance
Impulsive
Poor Behavior Controls
Need for Excitement
Lack of Responsibility
Early Behavior Problems
Adult Antisocial Behavior

This is your life,

L.W. "Cooyon Billy" Goatman-Hughes III

Re: Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from 17.5MPG within 1 month.

In article <1190177824.393697.135360@n39g2000hsh.googlegroups,com >,
wilsonb <wilsonbradley@gmail,com > wrote:
#So far have;
#Replaced all Sparks with E3
Are they copper core plugs as spec'ed in the service manual?
http :// www .wjjeeps,com /service/sparkplugs.htm

#Use regular gas
87?

/herb

Re: Grand Cherokee 2000 getting Extremely bad millage @ 14.5MPG from 17.5MPG within 1 month.

On Thu, 20 Sep 2007 22:29:08 -0700, "L.W. \(Bill\) Hughes III"
<LWBillHughes@hughes,net > wrote:


>LWHughes@hughes,net
> Sincerely,
> Llewellyn W. (Bill) Hughes III

> And how many of your friends drive an '05 Ford GT:
> http :// billhughes,com /SanDieguito/37-65Reunion/Sep20117.jpg
> Bless America, Bill O|||||||O
>mailto:LWHughes3rd@aol,com

...Great observation, you f*cking idiot...Too bad you misinterpreted
the real reasoning behind my statement. I said nothing about friends,
and your friends shit doesn't belong to you, somewhere in your great
parental training, they forgot to mention that other peoples material
goods don't belong to you, nor does it up your standing.

>
>"24Bit®" <24Bit@Ur.Asylm.org> wrote in message
>news:red5f310epmjmril7fjqsfvdoh552c3kaj@4ax,com ...
>>
>> Yeah you're right, your whole f*ck'en life has been one guess after
>> another. Exactly why you have nothing, and at this point never will.
>> Sell some of the junk in your garage for beer money, and number ONE,
>> that BlunderBird, so your wife can raise some flowers with the extra
>> room.
>>
>> Recipe for a Psychopath:
>>
>> Emotional & Interpersonal
>> Glib & Superficial
>> Egocentric & Grandiose
>> Lack of Remorse or Guilt
>> Lack of Empathy
>> Deceitful & Manipulative
>> Shallow Emotions
>> Social Deviance
>> Impulsive
>> Poor Behavior Controls
>> Need for Excitement
>> Lack of Responsibility
>> Early Behavior Problems
>> Adult Antisocial Behavior
>>
>> This is your life,
>>
>> L.W. "Cooyon Billy" Goatman-Hughes III



The lord that the Psychopath Llewellyn W. (Bill) Hughes III worships:

Abaddon, Accuser of our brethren, Adversary, Angel of Light,
Antichrist, Angel of the bottomless pit, Antichrist, Apollyon,
Beelzebub, Belial, Crooked serpent, Devil, Enemy,Dragon,
Father of lies, God of this World, Leviathan, Liar, Lucifer,
Lying spirit, Murderer, Old serpent, Piercing serpent, Power of
darkness,Prince of the devils, Prince of the power of the air,
Roaring lion, Prince of this world, Ruler of this world, Satan,
Serpent, Swine,Son of the Morning, Spirit who now works in
the sons of disobedience, Tempter, Unclean spirit, Wicked one.