| TJ acting up [message #777147] |
Sat, 15 July 2006 02:31 |
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About to go to the AutoZone and get the fault code read, but I thought I
would throw out a feeler for some help. Came back from a business trip
yesterday, got in the Jeep to go to the office and the check engine light is
on. It' sbeen sitting for about 4 days, no problem when I parked it. I pull
out of the driveway and it starts "bucking". Everytime I hit about 2000 rpm
it hesitates and feels like it misses. It will pull past it, runs ok at
speed, but shifting gears reproduces this. I checked to make sure the gas
cap was tight. Tried the ignition switch test (3 times on and off) but no
code comes up.
Any thoughts?
Jerry S.
99 TJ 4.0
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| Re: TJ acting up [message #777166 ] |
Sat, 15 July 2006 04:09 |
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Its mad at you maybe??
Needs more attention??
-jenn
On Fri, 14 Jul 2006 19:31:50 -0500, "Jerry Slaughter" <jerryslaughter [at] knology.net>
wrote:
>>About to go to the AutoZone and get the fault code read, but I thought I
>>would throw out a feeler for some help. Came back from a business trip
>>yesterday, got in the Jeep to go to the office and the check engine light is
>>on. It' sbeen sitting for about 4 days, no problem when I parked it. I pull
>>out of the driveway and it starts "bucking". Everytime I hit about 2000 rpm
>>it hesitates and feels like it misses. It will pull past it, runs ok at
>>speed, but shifting gears reproduces this. I checked to make sure the gas
>>cap was tight. Tried the ignition switch test (3 times on and off) but no
>>code comes up.
>>
>>Any thoughts?
>>
>>Jerry S.
>>99 TJ 4.0
>>
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| Re: TJ acting up [message #777169 ] |
Sat, 15 July 2006 04:23 |
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Hi Jerry,
Many times we don't give it enough time to run it's diagnostics
test. So wait at the end of the on, off, on, off, on. Some say we need
to clear the trip odometer before we start.
God Bless America, Bill O|||||||O
mailto:LWHughes3rd [at] aol.com http://www.billhughes.com/
Jerry Slaughter wrote:
>
> About to go to the AutoZone and get the fault code read, but I thought I
> would throw out a feeler for some help. Came back from a business trip
> yesterday, got in the Jeep to go to the office and the check engine light is
> on. It' sbeen sitting for about 4 days, no problem when I parked it. I pull
> out of the driveway and it starts "bucking". Everytime I hit about 2000 rpm
> it hesitates and feels like it misses. It will pull past it, runs ok at
> speed, but shifting gears reproduces this. I checked to make sure the gas
> cap was tight. Tried the ignition switch test (3 times on and off) but no
> code comes up.
>
> Any thoughts?
>
> Jerry S.
> 99 TJ 4.0
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| Re: TJ acting up [message #777170 ] |
Sat, 15 July 2006 04:29 |
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There's something to that. I'm not going to humiliate my self
telling you how I let my car know it's special, and loved, but I never
had to walk home, and I drive some mighty old cars.
God Bless America, Bill O|||||||O
mailto:LWHughes3rd [at] aol.com http://www.billhughes.com/
jbjeep wrote:
>
> Its mad at you maybe??
> Needs more attention??
>
> -jenn
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| Re: TJ acting up [message #777173 ] |
Sat, 15 July 2006 04:49 |
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"L.W.(Bill) Hughes III" <billhughes [at] cox.net> wrote in message
news:44B852F0.920246F [at] cox.net...
> There's something to that. I'm not going to humiliate my self
> telling you how I let my car know it's special, and loved, but I never
> had to walk home, and I drive some mighty old cars.
> God Bless America, Bill O|||||||O
> mailto:LWHughes3rd [at] aol.com http://www.billhughes.com/
>
> jbjeep wrote:
>>
>> Its mad at you maybe??
>> Needs more attention??
>>
Sure, lay a guilt trip on me because I spent a little time with a sexy late
model, low mileage rental in another city...
You guys are nutz....lol.
Jerry S.
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| Re: TJ acting up [message #777174 ] |
Sat, 15 July 2006 04:57 |
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I did the same thing last week in paradise but came home to my best girl....
"Jerry Slaughter" <jerryslaughter [at] knology.net> wrote in message
news:e7e77$44b857a0$454901da$32727 [at] KNOLOGY.NET...
>
> "L.W.(Bill) Hughes III" <billhughes [at] cox.net> wrote in message
> news:44B852F0.920246F [at] cox.net...
>> There's something to that. I'm not going to humiliate my self
>> telling you how I let my car know it's special, and loved, but I never
>> had to walk home, and I drive some mighty old cars.
>> God Bless America, Bill O|||||||O
>> mailto:LWHughes3rd [at] aol.com http://www.billhughes.com/
>>
>> jbjeep wrote:
>>>
>>> Its mad at you maybe??
>>> Needs more attention??
>>>
>
> Sure, lay a guilt trip on me because I spent a little time with a sexy
> late model, low mileage rental in another city...
>
> You guys are nutz....lol.
>
> Jerry S.
>
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| Re: TJ acting up [message #777177 ] |
Sat, 15 July 2006 05:27 |
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A-hem...
We are not all "guys". ;-)
-jenn
On Fri, 14 Jul 2006 21:49:07 -0500, "Jerry Slaughter" <jerryslaughter [at] knology.net>
wrote:
>>
>>"L.W.(Bill) Hughes III" <billhughes [at] cox.net> wrote in message
>>news:44B852F0.920246F [at] cox.net...
>>> There's something to that. I'm not going to humiliate my self
>>> telling you how I let my car know it's special, and loved, but I never
>>> had to walk home, and I drive some mighty old cars.
>>> God Bless America, Bill O|||||||O
>>> mailto:LWHughes3rd [at] aol.com http://www.billhughes.com/
>>>
>>> jbjeep wrote:
>>>>
>>>> Its mad at you maybe??
>>>> Needs more attention??
>>>>
>>
>>Sure, lay a guilt trip on me because I spent a little time with a sexy late
>>model, low mileage rental in another city...
>>
>>You guys are nutz....lol.
>>
>>Jerry S.
>>
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| Re: TJ acting up-update [message #777250 ] |
Sun, 16 July 2006 01:05 |
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"Jerry Slaughter" <jerryslaughter [at] knology.net> wrote in message
news:538c8$44b83772$454901da$5129 [at] KNOLOGY.NET...
> About to go to the AutoZone and get the fault code read, but I thought I
> would throw out a feeler for some help. Came back from a business trip
> yesterday, got in the Jeep to go to the office and the check engine light
> is on. It' sbeen sitting for about 4 days, no problem when I parked it. I
> pull out of the driveway and it starts "bucking". Everytime I hit about
> 2000 rpm it hesitates and feels like it misses. It will pull past it, runs
> ok at speed, but shifting gears reproduces this. I checked to make sure
> the gas cap was tight. Tried the ignition switch test (3 times on and off)
> but no code comes up.
If anyone is interested.... ;-)
The magic box said my TPS was bad. Replaced it ($51)...no joy. Same problem
persists. Still can't get a fault code from the on-off trick. Guess it goes
to the dealer next week. Damn....
Jerry S.
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| Re: TJ acting up-update [message #777264 ] |
Sun, 16 July 2006 02:27 |
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I had symptoms very much like that when I got my TJ back from the
dealership, when they did some recall work on it. Turns out they really
screwed up my computer, and blew 2 injectors. I have no idea how but
luckily it was before I did all the lifting n such so it was under warranty.
But OH they did try to blame it on me but I was so miff'ed I said that it
didn't have a problem until they got their hands on it and that I wouldn't
even take it back until its fixed.
Troy
"Jerry Slaughter" <jerryslaughter [at] knology.net> wrote in message
news:d4ec2$44b974c8$454901da$1027 [at] KNOLOGY.NET...
>
> "Jerry Slaughter" <jerryslaughter [at] knology.net> wrote in message
> news:538c8$44b83772$454901da$5129 [at] KNOLOGY.NET...
>> About to go to the AutoZone and get the fault code read, but I thought I
>> would throw out a feeler for some help. Came back from a business trip
>> yesterday, got in the Jeep to go to the office and the check engine light
>> is on. It' sbeen sitting for about 4 days, no problem when I parked it. I
>> pull out of the driveway and it starts "bucking". Everytime I hit about
>> 2000 rpm it hesitates and feels like it misses. It will pull past it,
>> runs ok at speed, but shifting gears reproduces this. I checked to make
>> sure the gas cap was tight. Tried the ignition switch test (3 times on
>> and off) but no code comes up.
>
> If anyone is interested.... ;-)
>
> The magic box said my TPS was bad. Replaced it ($51)...no joy. Same
> problem persists. Still can't get a fault code from the on-off trick.
> Guess it goes to the dealer next week. Damn....
>
> Jerry S.
>
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| Re: TJ acting up-update [message #777274 ] |
Sun, 16 July 2006 04:15 |
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You didn't get ANY codes?
You should have, at least, gotten a code that there were no codes......
Perhaps the computer is the problem?
"Jerry Slaughter" <jerryslaughter [at] knology.net> wrote in message
news:d4ec2$44b974c8$454901da$1027 [at] KNOLOGY.NET...
>
> "Jerry Slaughter" <jerryslaughter [at] knology.net> wrote in message
> news:538c8$44b83772$454901da$5129 [at] KNOLOGY.NET...
>> About to go to the AutoZone and get the fault code read, but I thought I
>> would throw out a feeler for some help. Came back from a business trip
>> yesterday, got in the Jeep to go to the office and the check engine light
>> is on. It' sbeen sitting for about 4 days, no problem when I parked it. I
>> pull out of the driveway and it starts "bucking". Everytime I hit about
>> 2000 rpm it hesitates and feels like it misses. It will pull past it,
>> runs ok at speed, but shifting gears reproduces this. I checked to make
>> sure the gas cap was tight. Tried the ignition switch test (3 times on
>> and off) but no code comes up.
>
> If anyone is interested.... ;-)
>
> The magic box said my TPS was bad. Replaced it ($51)...no joy. Same
> problem persists. Still can't get a fault code from the on-off trick.
> Guess it goes to the dealer next week. Damn....
>
> Jerry S.
>
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| Re: TJ acting up-update [message #777283 ] |
Sun, 16 July 2006 04:39 |
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There's about a six month period in TJs, my dyslexia won't let be
remember, that Daimler figured we didn't need the key option.
God Bless America, Bill O|||||||O
mailto:LWHughes3rd [at] aol.com http://www.billhughes.com/
billy ray wrote:
>
> You didn't get ANY codes?
> You should have, at least, gotten a code that there were no codes......
> Perhaps the computer is the problem?
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| Re: TJ acting up-update [message #777290 ] |
Sun, 16 July 2006 05:16 |
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"L.W.(Bill) Hughes III" <billhughes [at] cox.net> wrote in message
news:44B9A6F9.30AE57FB [at] cox.net...
> There's about a six month period in TJs, my dyslexia won't let be
> remember, that Daimler figured we didn't need the key option.
Dyslexia Bill? Or is that 'ol "Sometimers" kicking in and ya can't remember
what ya forgot?
LOL...
Jerry S.
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| Re: TJ acting up-update [message #777294 ] |
Sun, 16 July 2006 05:48 |
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Nope, I can tell the difference in attempting to memorize it,
whether it's senility of not. I could write it down, but then the memory
would shift to as how that time was categorized. All I can remember
about it is the year '97 the key works.
God Bless America, Bill O|||||||O
mailto:LWHughes3rd [at] aol.com http://www.billhughes.com/
Jerry Slaughter wrote:
>
> Dyslexia Bill? Or is that 'ol "Sometimers" kicking in and ya can't remember
> what ya forgot?
>
> LOL...
>
> Jerry S.
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| Re: TJ acting up-update [message #777304 ] |
Sun, 16 July 2006 07:59 |
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Jerry Slaughter wrote:
> The magic box said my TPS was bad. Replaced it ($51)...no joy. Same
> problem persists. Still can't get a fault code from the on-off trick.
> Guess it goes to the dealer next week. Damn....
The TPS will give you bucking or drop-out at a particular point in
the gas pedal. RPM related problems are timing. Timing is the Crankshaft
Position Sensor http://revbeergoggles.com/cps/ and ignition system
(rotor or Camshaft Position Sensor/stator). http://revbeergoggles.com/stator/
CPS problems usually result in a no-go after heating up and eventually
simply won't start. Coil problems manifest with engine temp. The warmer
things are the worse it gets till the coil frags. Rotor problems (like oil
in the distributor or cracks) usually give stumbles at certain RPMs. Sticky
or slow injectors will also cause problems but then usually above a certain
RPM. They certainly can cause a cylinder to run lean at high speed and that
can cause knocks. Didn't sound like you had that problem.
Then you are looking at either a harness ground problem or voltage problem.
With a digital ohm meter you can check the resistance of the ground side
to the block and the voltage provided (5v).
I'd need the wiring diagram to get you closer.
Still, I'm leaning towards a bad coil or plug. That causes
all sorts of bucking and will not set any codes.
Other thing, get a mechanics stethoscope (or a bit of rubber tube)
and listen to the injectors. Make sure they all are ticking.
--
DougW
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| Re: TJ acting up-update [message #777307 ] |
Sun, 16 July 2006 11:30 |
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Mine doesn't give codes - built June 1998 per build sheet.
Dave Milne, Scotland
"L.W.(Bill) Hughes III" <billhughes [at] cox.net> wrote in message
news:44B9B6F1.804F1BA1 [at] cox.net...
> Nope, I can tell the difference in attempting to memorize it,
> whether it's senility of not. I could write it down, but then the memory
> would shift to as how that time was categorized. All I can remember
> about it is the year '97 the key works.
> God Bless America, Bill O|||||||O
> mailto:LWHughes3rd [at] aol.com http://www.billhughes.com/
>
> Jerry Slaughter wrote:
> >
> > Dyslexia Bill? Or is that 'ol "Sometimers" kicking in and ya can't
remember
> > what ya forgot?
> >
> > LOL...
> >
> > Jerry S.
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| Re: TJ acting up-update [message #777310 ] |
Sun, 16 July 2006 12:04 |
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Thanks. I'll try to remember.
God Bless America, Bill O|||||||O
mailto:LWHughes3rd [at] aol.com http://www.billhughes.com/
Dave Milne wrote:
>
> Mine doesn't give codes - built June 1998 per build sheet.
>
> Dave Milne, Scotland
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| Re: TJ acting up-update-fixed [message #784191 ] |
Mon, 17 July 2006 23:44 |
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Thanks Doug, you gave me the best info! Fortunately for me the Jeep appears
to have "healed" itself. My plan was to pull the coil this evening and test
it. When I got in the Jeep this morning it ran fine, no hesitation ,
nothing, but the Check Engine Light was still on. When I went home for
lunch, no light and it runs fine. I wonder if the computer just needed to
re-map after the new TPS was installed.
Jerry S.
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| Re: TJ acting up-update-fixed [message #784204 ] |
Tue, 18 July 2006 02:15 |
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Jerry Slaughter wrote:
> Thanks Doug, you gave me the best info! Fortunately for me the Jeep
> appears to have "healed" itself. My plan was to pull the coil this
> evening and test it. When I got in the Jeep this morning it ran fine,
> no hesitation , nothing, but the Check Engine Light was still on.
> When I went home for lunch, no light and it runs fine. I wonder if
> the computer just needed to re-map after the new TPS was installed.
Erm.. yes it does. I forgot about that. :/
Before you drive anymore do this.
Turn the ignition to on, (engine off)
Get under the hood and move the throttle plate all the way open and hold
it there for a few seconds then slowly cycle it between full closed and full
open about four times. Then get in and turn the ignition off. Then start.
--
DougW
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