'98 TJ Bucking Bronco
09-01-2004, 06:39 PM
#1
Guest
Posts: n/a
'98 TJ Bucking Bronco
About a week ago, my '98 TJ (2.5L, 5-speed, 71K miles) began missing
at highway speed, bucking like a bronco. I chalked it up to a bad
tank of gas, so I dumped in a bottle of HEET and a bottle of fuel
injector cleaner. The problem continued, so I did the same thing with
my next fill-up at a different station. No improvement. Since then,
I've changed the plugs, installed new wires, distributor cap and
rotor, have cleaned the throttle body, and have disconnected all
electrical connections to the throttle body and fuel injectors and
have sprayed electrical contact cleaner on them. I still have an
intermittent miss at speed. Not as severe as before, but I still have
the problem. What's next?
Thanks in advance for any assistance!
Mark
'98 TJ
'98 XJ
at highway speed, bucking like a bronco. I chalked it up to a bad
tank of gas, so I dumped in a bottle of HEET and a bottle of fuel
injector cleaner. The problem continued, so I did the same thing with
my next fill-up at a different station. No improvement. Since then,
I've changed the plugs, installed new wires, distributor cap and
rotor, have cleaned the throttle body, and have disconnected all
electrical connections to the throttle body and fuel injectors and
have sprayed electrical contact cleaner on them. I still have an
intermittent miss at speed. Not as severe as before, but I still have
the problem. What's next?
Thanks in advance for any assistance!
Mark
'98 TJ
'98 XJ
09-01-2004, 06:45 PM
#2
Guest
Posts: n/a
Re: '98 TJ Bucking Bronco
Does that mean it is stalling or partially stalling repeatedly?
Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"M. E. Bye" <fxdyna@hotmail.com> wrote in message
news:euicj0h6cq7v0moc7v7g5g614svbjn1e59@4ax.com...
> About a week ago, my '98 TJ (2.5L, 5-speed, 71K miles) began missing
> at highway speed, bucking like a bronco. I chalked it up to a bad
> tank of gas, so I dumped in a bottle of HEET and a bottle of fuel
> injector cleaner. The problem continued, so I did the same thing with
> my next fill-up at a different station. No improvement. Since then,
> I've changed the plugs, installed new wires, distributor cap and
> rotor, have cleaned the throttle body, and have disconnected all
> electrical connections to the throttle body and fuel injectors and
> have sprayed electrical contact cleaner on them. I still have an
> intermittent miss at speed. Not as severe as before, but I still have
> the problem. What's next?
>
> Thanks in advance for any assistance!
>
> Mark
> '98 TJ
> '98 XJ
Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"M. E. Bye" <fxdyna@hotmail.com> wrote in message
news:euicj0h6cq7v0moc7v7g5g614svbjn1e59@4ax.com...
> About a week ago, my '98 TJ (2.5L, 5-speed, 71K miles) began missing
> at highway speed, bucking like a bronco. I chalked it up to a bad
> tank of gas, so I dumped in a bottle of HEET and a bottle of fuel
> injector cleaner. The problem continued, so I did the same thing with
> my next fill-up at a different station. No improvement. Since then,
> I've changed the plugs, installed new wires, distributor cap and
> rotor, have cleaned the throttle body, and have disconnected all
> electrical connections to the throttle body and fuel injectors and
> have sprayed electrical contact cleaner on them. I still have an
> intermittent miss at speed. Not as severe as before, but I still have
> the problem. What's next?
>
> Thanks in advance for any assistance!
>
> Mark
> '98 TJ
> '98 XJ
09-01-2004, 06:45 PM
#3
Guest
Posts: n/a
Re: '98 TJ Bucking Bronco
Does that mean it is stalling or partially stalling repeatedly?
Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"M. E. Bye" <fxdyna@hotmail.com> wrote in message
news:euicj0h6cq7v0moc7v7g5g614svbjn1e59@4ax.com...
> About a week ago, my '98 TJ (2.5L, 5-speed, 71K miles) began missing
> at highway speed, bucking like a bronco. I chalked it up to a bad
> tank of gas, so I dumped in a bottle of HEET and a bottle of fuel
> injector cleaner. The problem continued, so I did the same thing with
> my next fill-up at a different station. No improvement. Since then,
> I've changed the plugs, installed new wires, distributor cap and
> rotor, have cleaned the throttle body, and have disconnected all
> electrical connections to the throttle body and fuel injectors and
> have sprayed electrical contact cleaner on them. I still have an
> intermittent miss at speed. Not as severe as before, but I still have
> the problem. What's next?
>
> Thanks in advance for any assistance!
>
> Mark
> '98 TJ
> '98 XJ
Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"M. E. Bye" <fxdyna@hotmail.com> wrote in message
news:euicj0h6cq7v0moc7v7g5g614svbjn1e59@4ax.com...
> About a week ago, my '98 TJ (2.5L, 5-speed, 71K miles) began missing
> at highway speed, bucking like a bronco. I chalked it up to a bad
> tank of gas, so I dumped in a bottle of HEET and a bottle of fuel
> injector cleaner. The problem continued, so I did the same thing with
> my next fill-up at a different station. No improvement. Since then,
> I've changed the plugs, installed new wires, distributor cap and
> rotor, have cleaned the throttle body, and have disconnected all
> electrical connections to the throttle body and fuel injectors and
> have sprayed electrical contact cleaner on them. I still have an
> intermittent miss at speed. Not as severe as before, but I still have
> the problem. What's next?
>
> Thanks in advance for any assistance!
>
> Mark
> '98 TJ
> '98 XJ
09-01-2004, 06:45 PM
#4
Guest
Posts: n/a
Re: '98 TJ Bucking Bronco
Does that mean it is stalling or partially stalling repeatedly?
Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"M. E. Bye" <fxdyna@hotmail.com> wrote in message
news:euicj0h6cq7v0moc7v7g5g614svbjn1e59@4ax.com...
> About a week ago, my '98 TJ (2.5L, 5-speed, 71K miles) began missing
> at highway speed, bucking like a bronco. I chalked it up to a bad
> tank of gas, so I dumped in a bottle of HEET and a bottle of fuel
> injector cleaner. The problem continued, so I did the same thing with
> my next fill-up at a different station. No improvement. Since then,
> I've changed the plugs, installed new wires, distributor cap and
> rotor, have cleaned the throttle body, and have disconnected all
> electrical connections to the throttle body and fuel injectors and
> have sprayed electrical contact cleaner on them. I still have an
> intermittent miss at speed. Not as severe as before, but I still have
> the problem. What's next?
>
> Thanks in advance for any assistance!
>
> Mark
> '98 TJ
> '98 XJ
Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"M. E. Bye" <fxdyna@hotmail.com> wrote in message
news:euicj0h6cq7v0moc7v7g5g614svbjn1e59@4ax.com...
> About a week ago, my '98 TJ (2.5L, 5-speed, 71K miles) began missing
> at highway speed, bucking like a bronco. I chalked it up to a bad
> tank of gas, so I dumped in a bottle of HEET and a bottle of fuel
> injector cleaner. The problem continued, so I did the same thing with
> my next fill-up at a different station. No improvement. Since then,
> I've changed the plugs, installed new wires, distributor cap and
> rotor, have cleaned the throttle body, and have disconnected all
> electrical connections to the throttle body and fuel injectors and
> have sprayed electrical contact cleaner on them. I still have an
> intermittent miss at speed. Not as severe as before, but I still have
> the problem. What's next?
>
> Thanks in advance for any assistance!
>
> Mark
> '98 TJ
> '98 XJ
09-01-2004, 06:55 PM
#5
Guest
Posts: n/a
Re: '98 TJ Bucking Bronco
On Wed, 1 Sep 2004 15:45:30 -0700, "Jerry Bransford" <jerrypb@***.net>
wrote:
>Does that mean it is stalling or partially stalling repeatedly?
>
>Jerry
Jerry...
It's not stalling out. It sounds like a misfire and at this point, I
just don't know whether or not its a fuel/fuel delivery problem or a
spark problem. It misses, jerks, bucks. I may drive 5 miles down the
road and everything is fine. Then I'll get a miss... or a flurry of
misses... and everything is fine for another few miles down the road.
Funny thing is that at idle there seems to be absolutely no problem.
At slower speeds (like around town) it may do it... but rarely.
Mark
wrote:
>Does that mean it is stalling or partially stalling repeatedly?
>
>Jerry
Jerry...
It's not stalling out. It sounds like a misfire and at this point, I
just don't know whether or not its a fuel/fuel delivery problem or a
spark problem. It misses, jerks, bucks. I may drive 5 miles down the
road and everything is fine. Then I'll get a miss... or a flurry of
misses... and everything is fine for another few miles down the road.
Funny thing is that at idle there seems to be absolutely no problem.
At slower speeds (like around town) it may do it... but rarely.
Mark
09-01-2004, 06:55 PM
#6
Guest
Posts: n/a
Re: '98 TJ Bucking Bronco
On Wed, 1 Sep 2004 15:45:30 -0700, "Jerry Bransford" <jerrypb@***.net>
wrote:
>Does that mean it is stalling or partially stalling repeatedly?
>
>Jerry
Jerry...
It's not stalling out. It sounds like a misfire and at this point, I
just don't know whether or not its a fuel/fuel delivery problem or a
spark problem. It misses, jerks, bucks. I may drive 5 miles down the
road and everything is fine. Then I'll get a miss... or a flurry of
misses... and everything is fine for another few miles down the road.
Funny thing is that at idle there seems to be absolutely no problem.
At slower speeds (like around town) it may do it... but rarely.
Mark
wrote:
>Does that mean it is stalling or partially stalling repeatedly?
>
>Jerry
Jerry...
It's not stalling out. It sounds like a misfire and at this point, I
just don't know whether or not its a fuel/fuel delivery problem or a
spark problem. It misses, jerks, bucks. I may drive 5 miles down the
road and everything is fine. Then I'll get a miss... or a flurry of
misses... and everything is fine for another few miles down the road.
Funny thing is that at idle there seems to be absolutely no problem.
At slower speeds (like around town) it may do it... but rarely.
Mark
09-01-2004, 06:55 PM
#7
Guest
Posts: n/a
Re: '98 TJ Bucking Bronco
On Wed, 1 Sep 2004 15:45:30 -0700, "Jerry Bransford" <jerrypb@***.net>
wrote:
>Does that mean it is stalling or partially stalling repeatedly?
>
>Jerry
Jerry...
It's not stalling out. It sounds like a misfire and at this point, I
just don't know whether or not its a fuel/fuel delivery problem or a
spark problem. It misses, jerks, bucks. I may drive 5 miles down the
road and everything is fine. Then I'll get a miss... or a flurry of
misses... and everything is fine for another few miles down the road.
Funny thing is that at idle there seems to be absolutely no problem.
At slower speeds (like around town) it may do it... but rarely.
Mark
wrote:
>Does that mean it is stalling or partially stalling repeatedly?
>
>Jerry
Jerry...
It's not stalling out. It sounds like a misfire and at this point, I
just don't know whether or not its a fuel/fuel delivery problem or a
spark problem. It misses, jerks, bucks. I may drive 5 miles down the
road and everything is fine. Then I'll get a miss... or a flurry of
misses... and everything is fine for another few miles down the road.
Funny thing is that at idle there seems to be absolutely no problem.
At slower speeds (like around town) it may do it... but rarely.
Mark
09-01-2004, 07:16 PM
#8
Guest
Posts: n/a
Re: '98 TJ Bucking Bronco
Sounds like maybe the crankshaft position sensor or camshaft position
sensor. Any stored codes?
Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"M. E. Bye" <fxdyna@hotmail.com> wrote in message
news:ejkcj0hs2pm68qj0pflhbs5eh1o3o7fa48@4ax.com...
> On Wed, 1 Sep 2004 15:45:30 -0700, "Jerry Bransford" <jerrypb@***.net>
> wrote:
>
>>Does that mean it is stalling or partially stalling repeatedly?
>>
>>Jerry
>
>
> Jerry...
>
> It's not stalling out. It sounds like a misfire and at this point, I
> just don't know whether or not its a fuel/fuel delivery problem or a
> spark problem. It misses, jerks, bucks. I may drive 5 miles down the
> road and everything is fine. Then I'll get a miss... or a flurry of
> misses... and everything is fine for another few miles down the road.
> Funny thing is that at idle there seems to be absolutely no problem.
> At slower speeds (like around town) it may do it... but rarely.
>
> Mark
sensor. Any stored codes?
Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"M. E. Bye" <fxdyna@hotmail.com> wrote in message
news:ejkcj0hs2pm68qj0pflhbs5eh1o3o7fa48@4ax.com...
> On Wed, 1 Sep 2004 15:45:30 -0700, "Jerry Bransford" <jerrypb@***.net>
> wrote:
>
>>Does that mean it is stalling or partially stalling repeatedly?
>>
>>Jerry
>
>
> Jerry...
>
> It's not stalling out. It sounds like a misfire and at this point, I
> just don't know whether or not its a fuel/fuel delivery problem or a
> spark problem. It misses, jerks, bucks. I may drive 5 miles down the
> road and everything is fine. Then I'll get a miss... or a flurry of
> misses... and everything is fine for another few miles down the road.
> Funny thing is that at idle there seems to be absolutely no problem.
> At slower speeds (like around town) it may do it... but rarely.
>
> Mark
09-01-2004, 07:16 PM
#9
Guest
Posts: n/a
Re: '98 TJ Bucking Bronco
Sounds like maybe the crankshaft position sensor or camshaft position
sensor. Any stored codes?
Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"M. E. Bye" <fxdyna@hotmail.com> wrote in message
news:ejkcj0hs2pm68qj0pflhbs5eh1o3o7fa48@4ax.com...
> On Wed, 1 Sep 2004 15:45:30 -0700, "Jerry Bransford" <jerrypb@***.net>
> wrote:
>
>>Does that mean it is stalling or partially stalling repeatedly?
>>
>>Jerry
>
>
> Jerry...
>
> It's not stalling out. It sounds like a misfire and at this point, I
> just don't know whether or not its a fuel/fuel delivery problem or a
> spark problem. It misses, jerks, bucks. I may drive 5 miles down the
> road and everything is fine. Then I'll get a miss... or a flurry of
> misses... and everything is fine for another few miles down the road.
> Funny thing is that at idle there seems to be absolutely no problem.
> At slower speeds (like around town) it may do it... but rarely.
>
> Mark
sensor. Any stored codes?
Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"M. E. Bye" <fxdyna@hotmail.com> wrote in message
news:ejkcj0hs2pm68qj0pflhbs5eh1o3o7fa48@4ax.com...
> On Wed, 1 Sep 2004 15:45:30 -0700, "Jerry Bransford" <jerrypb@***.net>
> wrote:
>
>>Does that mean it is stalling or partially stalling repeatedly?
>>
>>Jerry
>
>
> Jerry...
>
> It's not stalling out. It sounds like a misfire and at this point, I
> just don't know whether or not its a fuel/fuel delivery problem or a
> spark problem. It misses, jerks, bucks. I may drive 5 miles down the
> road and everything is fine. Then I'll get a miss... or a flurry of
> misses... and everything is fine for another few miles down the road.
> Funny thing is that at idle there seems to be absolutely no problem.
> At slower speeds (like around town) it may do it... but rarely.
>
> Mark
09-01-2004, 07:16 PM
#10
Guest
Posts: n/a
Re: '98 TJ Bucking Bronco
Sounds like maybe the crankshaft position sensor or camshaft position
sensor. Any stored codes?
Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"M. E. Bye" <fxdyna@hotmail.com> wrote in message
news:ejkcj0hs2pm68qj0pflhbs5eh1o3o7fa48@4ax.com...
> On Wed, 1 Sep 2004 15:45:30 -0700, "Jerry Bransford" <jerrypb@***.net>
> wrote:
>
>>Does that mean it is stalling or partially stalling repeatedly?
>>
>>Jerry
>
>
> Jerry...
>
> It's not stalling out. It sounds like a misfire and at this point, I
> just don't know whether or not its a fuel/fuel delivery problem or a
> spark problem. It misses, jerks, bucks. I may drive 5 miles down the
> road and everything is fine. Then I'll get a miss... or a flurry of
> misses... and everything is fine for another few miles down the road.
> Funny thing is that at idle there seems to be absolutely no problem.
> At slower speeds (like around town) it may do it... but rarely.
>
> Mark
sensor. Any stored codes?
Jerry
--
Jerry Bransford
PP-ASEL N6TAY
See the Geezer Jeep at
http://members.***.net/jerrypb/
"M. E. Bye" <fxdyna@hotmail.com> wrote in message
news:ejkcj0hs2pm68qj0pflhbs5eh1o3o7fa48@4ax.com...
> On Wed, 1 Sep 2004 15:45:30 -0700, "Jerry Bransford" <jerrypb@***.net>
> wrote:
>
>>Does that mean it is stalling or partially stalling repeatedly?
>>
>>Jerry
>
>
> Jerry...
>
> It's not stalling out. It sounds like a misfire and at this point, I
> just don't know whether or not its a fuel/fuel delivery problem or a
> spark problem. It misses, jerks, bucks. I may drive 5 miles down the
> road and everything is fine. Then I'll get a miss... or a flurry of
> misses... and everything is fine for another few miles down the road.
> Funny thing is that at idle there seems to be absolutely no problem.
> At slower speeds (like around town) it may do it... but rarely.
>
> Mark